1-1 Product characteristics Major Part Characteristics Specifications...1-3

Transcription

1 CHP-671R/L

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3 Table of Contents 1. Product characteristics and specifications 1-1 Product characteristics Major Part Characteristics Specifications Product installation 2-1 Installation method Precautions on installation Installing the product How to use Disassembling and reassembling 3-1 Disassembling and reassembling the product Draining water before disassembling the product Cover-top ASSY separation Cover-front lower ASSY separation Cover-front upper ASSY separation PBA ASSY separation Cover-rear ASSY separation Fault diagnosis 4-1 Checking faults by symptoms Power malfunction Cooling malfunction Hot water malfunction Room temperature water malfunction and water overflow malfunction Control specifications Exploded view and parts list 5-1 Exploded view and parts list...5-1

4 Table of Contents 6. Parts location diagrams 6-1 Electrical wiring diagram Water piping diagram PBA location diagram MAIN PBA FRONT PBA SMPS PBA Reference information 7-1 Names of each part Functions and reference information Explanation of operation and indication parts ( Indication Part / Operation Part) Types and functions of filters Water Filtration Process...7-7

5 Product characteristics and specifications 1. Product characteristics and specifications 1-1 Product characteristics Cold and hot water stage indicator Front draining system It is convenient as it can drain the cold water / room water / hot water from the front side without moving the product when you open the front draining door. Fine carbon particle reduce At the last stage of the filtration, Plus Inno-sense filter is applied to reduce carbon particles that sometimes come from the post carbon filter. Mass gutter applying It doesn t need the extra secondary draining tank as it applies the mass gutter and it is convenient as it can extract the room water with a big vessel directly. Coway co., Ltd 1-1

6 Product characteristics and specifications Major Part Characteristics Part Name Use Operation principles FEED valve / NOS valve (for safety cutoff) Source water entry and safety cutoff function Opens and closes the flow path when full water signals from the low water level/full water level sensor and overflow sensor are detected to stop entry of source water in two ways. Part Name Use Operation principles Low water level / Medium water level / Full water level sensor (capacitance sensor) Water level detection in the room-temperature water tank Detects the room-temperature water tank level in three stages and adjusts roomtemperature water operation through the FEED valve. Part Name Use Operation principles Overflow sensor (capacitance sensor) Water level detection in the room-temperature water tank Operates the NOS valve to cut off room-temperature water when the water overflow sensor detects an overflow in the room-temperature water tank. Major Part Characteristics Parts Standard ratings and specifications Remarks Feed Valve / NOS Valve Compressor Volts : DC 24 V AMPS : 210 ma Refer to the rating plate. 1-2 Coway co., Ltd

7 Product characteristics and specifications 1-2 Specifications Basic specifications Model CHP-671R CHP-671L Filtration Method Power Supply Room Water RO(Reverse Osmosis) Refer to the rating plate L Tank Capacity Cold Water Hot Water Total 6 L 3.6 L 21.1 L Dimension Working Temperature 370 mm(w) 490 mm(d) mm(h) 5 C - 35 C (41 F - 95 F) Production Rate 282 L/d (25 C, 0.41 Mpa) 189 L/d (25 C, 0.14 Mpa) Working Pressure 69 kpa 827 kpa 137 kpa 827 kpa Net Weight 34.8 kg 32.8 kg The water amount can be differentiated according to the water pressure and the water temperature. The water tank capacity is the amount by the size and can be different from the extraction capacity. Without any prior notice, all or parts of the product are subject to change for the purpose of improving the performance of the product. Refer to Performance data sheet for individual contaminants, reduction performance and general operating information. Coway co., Ltd 1-3

8 MEMO 1-4 Coway co., Ltd

9 Product installation 2. Product installation 2-1 Installation method Precautions on installation This purifier's tank capacity is suitable for business use. Install the product base so it is even and firmly in place. Do not install in direct sunlight, in places where the temperature drops below zero, or in very humid places. Check the product manual again before reinstalling or moving the purifier. Only connect the power cord to the voltage rating that matches it on the rating plate. Check the voltage before connecting the power cord to the wall outlet. The source water hose must be connected to a cold water pipe. - The filter may be damaged if connected to hot water of 40 C or hotter. Precautions Immediately after installation, dispose of at least two full tanks of stored water while the storage tank is full before using the purifier. Use new filters only after washing. (During installation and A/S exchange) - Plus sediment filter: Install after washing with source water for about 10 seconds. - Pre-carbon filter: Install in reverse and install after washing with source water for about 3 minutes. - Membrane (RO) filter: Install the filtered water valve after washing with source water for about 5 minutes. - Nanotrap (R) filter: Install after washing with source water for about 3 minutes. - Plus Inno-Sense filter: Install with no separate flushing. - Plus Inno-Sense filter (D): Install with no separate flushing. Installation water pressure The source water pressure must be at least 138 kpa for the water volume and water system to operate smoothly. Installation distance Source water pressure of 138 kpa or less: Install within a height of 3 m and a distance of 5 m. Source water pressure of 138 kpa or more: Install within a height of 3 m and a distance of 25 m. Coway co., Ltd 2-1

10 Product installation Installing the product The summary for the proper installation of the water filtration device Explanation Reference picture 1. Close main water supply valve to separate the faucet. 2. Apply the teflon tape on the adaptor and fit it to the pipe. Do not turn the water pipe. 3. Connect the faucet with the adaptor. Install the adaptor with connector to the cold water pipe. 4. Connect 1/4 inch orange tubing with the connector on the adaptor. Flush water through each filter at least 5 minutes before Connection. 2-2 Coway co., Ltd

11 Product installation Explanation Reference picture 5. Open the feed valve to supply water to the filtration system. Coway co., Ltd 2-3

12 Product installation Follow the instruction for installation Main water supply valve Voltage rating that matches it on the rating plate. Connect the orange color inlet tubing 1 to the tap water supplying pipe. Connect the outlet tubing Inlet tubing (Orange) Outlet tubing(blue) 2-4 Coway co., Ltd

13 Product installation 2-2 How to use Only connect the power cord to the voltage rating that matches it on the rating plate. To drink the cold water Explanation Reference picture 1. You can drink the cold water when you turn the jog shuttle to the right in cold water/room water changeover faucet and pushing the cup-touch lever. If the cold water doesn t come from the water filtration device, check if the cold water mode indicator is turned on. Coway co., Ltd 2-5

14 Product installation To drink the hot water Explanation Reference picture 1. If you press the hot water safety button and push the cuptouch lever, you can drink the hot water. If the cold water doesn t come from the water filtration device, check if the cold water mode indicator is turned on. 2-6 Coway co., Ltd

15 Product installation To drink the room water Explanation Reference picture 1. You can drink the room water when you turn the jog shuttle to the left in cold water/room water changeover faucet and push the cup-touch lever. Coway co., Ltd 2-7

16 MEMO 2-8 Coway co., Ltd

17 Disassembling and refitting 3. Disassembling and reassembling 3-1 Disassembling and reassembling the product Draining water before disassembling the product No. Part name Description Reference picture 1 Drain hose 1) Push the drain hose with your hand to open. 2) Open the drain connector cap. 3) Open the drain connector cap. 4) Connect the drain hose and then completely drain water. Coway co., Ltd 3-1

18 Disassembling and refitting Cover-top ASSY separation No. Part name Description Reference picture 1 Cover-top 1) Remove the cover-top in the direction of the arrow. 2) Remove the silicon hose - overheating. 3-2 Coway co., Ltd

19 Disassembling and refitting No. Part name Description Reference picture 1 Cover-top 3) Detach the 6 clips for the cap-main tank ASSY. 4) Remove the anti-bacterial filter ASSY in the direction of the arrow. 5) Remove the separator ASSY in the direction of the arrow. Coway co., Ltd 3-3

20 Disassembling and refitting Cover-front lower ASSY separation No. Part name Description Reference picture 1 Cover-front lower ASSY 1) Push the drain hose with your hand to open. 2) Remove the 1 screw from the cover-front lower ASSY. : M 4X10 3) Remove the cover-front lower ASSY in the direction of the arrow. 3-4 Coway co., Ltd

21 Disassembling and refitting No. Part name Description Reference picture 2 Filter 1) Use a - screwdriver to remove fittings connected to the filter. 2) Remove the filter in the direction of the arrow. 3 Tray 1) Remove the tray in the direction of the arrow. 2) Remove the grill-tray in the direction of the arrow. Coway co., Ltd 3-5

22 Disassembling and refitting Cover-front upper ASSY separation No. Part name Description Reference picture 1 Cover-front upper ASSY 1) Remove the 4 screws from the cover-front upper ASSY. : 4-THT 4X10 2) Remove the cover-front upper ASSY in the direction of the arrow. Change the deco-multifaucet ASSY to the cold water location and then remove. Assemble the cover-front ASSY. Do not detach the deco-multifaucet ASSY. 3) Remove connectors connected to the cover-front upper ASSY. 3-6 Coway co., Ltd

23 Disassembling and refitting No. Part name Description Reference picture 2 PBA-front ASSY 1) Remove the 2 screws from the cover-front PBA. : 2-THT 4X12 2) Remove the PBA-front ASSY in the direction of the arrow. 3 Decomultifaucet ASSY 1) Push the deco-multifaucet ASSY hook to detach. Coway co., Ltd 3-7

24 Disassembling and refitting PBA ASSY separation No. Part name Description Reference picture 1 PBA ASSY 1) Remove the cover-front PBA in the direction of the arrow. 2) Remove all connectors connected to the PBA ASSY. 3) Remove the 2 screws from the case-pba main ASSY. : 2-THT 4X10 4) Remove the 2 screws from the PBA-main. : 2-THT 4X Coway co., Ltd

25 Disassembling and refitting No. Part name Description Reference picture 1 PBA ASSY 5) Remove the 2 screws from the PBA-SMPS. : 2-THT 4X10 2 Sensorcapacitance water level 1) Use a - screwdriver to remove the fittings. 2) Use a - screwdriver to remove the sensor-capacitance water level clip. 3) Remove the sensor-capacitance water level in the direction of the arrow. Coway co., Ltd 3-9

26 Disassembling and refitting No. Part name Description Reference picture 3 Faucet-cold purified 1) Use a - screwdriver to remove hoses connected to the faucet-cold purified water. 2) Remove the 2 screws from the faucet-cold purified water. : 2-THT 4X12 3) Remove the faucet-cold purified water in the direction of the arrow Coway co., Ltd

27 Disassembling and refitting No. Part name Description Reference picture 4 Faucet-hot water ASSY 1) Remove the 2 screws from the faucet-hot water ASSY. : 2-THT 4X12 2) Remove the faucet-hot water ASSY in the direction of the arrow. 5 Bracketfaucet 1) Remove the 2 screws from the bracket-faucet. : 2-THT 4X10 Coway co., Ltd 3-11

28 Disassembling and refitting No. Part name Description Reference picture 6 Sensorcold water temperature sensor 1) Remove the sealant and then remove the 1 screw from the sensor-cold water temperature sensor. : THT 4X10 (STS430) 2) Remove the sensor-cold water temperature sensor in the direction of the arrow. 7 Connectordrain ASSY 1) Open the drain connector cap. 2) Use needle-nose pliers to turn and remove the connector drain ASSY in the direction of the arrow Coway co., Ltd

29 Disassembling and refitting No. Part name Description Reference picture 8 Valve-feed/ NOS ASSY 1) Use a - screwdriver to remove fittings connected to the valvefeed/nos ASSY. 2) Remove the 1 screw from the valve-feed/nos ASSY. : THT 4X12 9 Bracket-filter 1) Remove the 2 screws from the bracket-filter. : 2-THT 4X10 Coway co., Ltd 3-13

30 Disassembling and refitting Cover-rear ASSY separation No. Part name Description Reference picture 1 Cover-rear 1) Remove the 6 screws from the cover-rear. : 4-THT 4X10 ( ) : 2-PHT 6X18 ( ) 2 Power cord 1) Remove the 1 screw from the power cord. : PHT 3X8 (washer) 2) Remove the power cord in the direction of the arrow Coway co., Ltd

31 Disassembling and refitting No. Part name Description Reference picture 3 Cover-side ASSY 1) Remove the 8 screws from the cover-side L ASSY. : 8-THT 4X10 2) Remove the 8 screws from the cover-side R ASSY. : 8-THT 4X10 Coway co., Ltd 3-15

32 MEMO 3-16 Coway co., Ltd

33 Fault diagnosis 4. Fault diagnosis 4-1 Checking faults by symptoms Power malfunction Power malfunction The control panel and display panel are not illuminated. Is the power socket voltage normal? No Power malfunction if below rated voltage Check household supply power Yes Power is irregular or 0 V Check socket wiring connection malfunction or power failure Is the MAIN PBA input rated voltage? No Is the SMPS FUSE fused? Yes FUSE current flow normal Check FUSE and then replace SMPS No Is the SMPS connector contact normal? No Connector contact malfunction Connect connector properly Yes Check SMPS output voltage DC 24 V, DC 5 V Check and replace SMPS Is the MAIN PBA connector contact normal? No MAIN PBA connector contact malfunction Replace and check MAIN PBA Yes A Coway co., Ltd 4-1

34 Fault diagnosis A Is the FND cable connection OPEN? Yes FND cable access malfunction Check and replace FND cable No Is the PBA MICOM voltage DC 5 V? No PBA power circuit malfunction Check and replace MAIN PBA 4-2 Coway co., Ltd

35 Fault diagnosis Cooling malfunction Cooling malfunction COMP. Resistance: MAIN Ω ± 7 % (when the ambient temperature is 22 C) SUB Ω ± 7 % (when the ambient temperature is 22 C) PTC resistance: 22 Ω (when the ambient temperature is 25 C) Is the socket power voltage within rated voltage? No Household supply power malfunction Check household supply power Yes COMP. Is the cable contact normal? No Connector contact malfunction Connector check and malfunction Yes Is the display at medium water level? Yes COMP. (when less than low water level) does not start Room temperature water replenished when less than low water level No Is the cold water selection switch in the ON position? No Cannot select cold water Turn the cold water selection switch ON Yes Is the FND cold water temperature display lamp flashing? No Yes Is there anything wrong with the cold water connector? Yes No Check cold water connector Check cold water sensor measured value and then replace if faulty COMP. Is the resistance normal? No COMP Main/auxiliary wire wound resistance 0 Ω or malfunction COMP. Replacement Yes B Coway co., Ltd 4-3

36 Fault diagnosis B Are the OLP and PTC normal? No Normal if OLP current flows PTC 22 Ω normal Check and replace Yes COMP. While COMP. is operating, Is the supplied power rated voltage? No COMP. 0 V malfunction when checking connector Check and replace MAIN PBA 4-4 Coway co., Ltd

37 Fault diagnosis Hot water malfunction Hot water malfunction Is the socket power voltage within rated voltage? No Household supply power malfunction Check household supply power Yes Is the heater cable contact normal? No Connector contact malfunction Connector check and malfunction Yes Is the display at medium water level? Yes Heater does not start when less than low water level Replenish room temperature water when less than low water level No Is the hot water selection switch in the ON position? No Cannot select hot water Turn the hot water selection switch ON Yes Is the FND hot water temperature display lamp flashing? No Yes Is the hot water connector normal? Yes No Check hot water connector Replace hot water sensor Is the hot water temperature sensor normal? No Hot water tank temperature measurement and temperature table comparison Check and replace hot water sensor Yes C Coway co., Ltd 4-5

38 Fault diagnosis C Is the heater resistance 88 Ω % - 8 %? No Malfunction if heater resistance is 0 Ω, Check and replace heater Yes Is the bimetal normal? No Bimetal current flow normal Check and replace bimetal Yes Is the voltage supplied to the heater rated voltage when the heater is on? No Faulty MAIN PBA Check and replace MAIN PBA 4-6 Coway co., Ltd

39 Fault diagnosis Room temperature water malfunction and water overflow malfunction Room temperature water malfunction and water overflow malfunction Is the socket power voltage within rated voltage? No Household supply power malfunction Check household supply power Yes Are the water cutoff and water supply valves normal? No Check and OPEN source water valve Yes Are the tubing lines compressed or twisted? Yes Check and then replace tubing lines No Does water pass through the filter? No Replace the filter if it's clogged Yes Are the water pipes connected according to specifications? No Check source water entry/waste water and water pipes Yes Is the SMPS secondary voltage normal? No SMPS voltage DC 24 V, DC 5 V Check and replace after verifying Yes D Coway co., Ltd 4-7

40 Fault diagnosis D Is there a FEED-NOS valve malfunction? Yes Check valve latter part under normal room-temperature water conditions (Foreign matter) Check and replace after verifying No Is the water level sensor normal? Yes No Upper surface of low/medium water level sensor detection area, lower surface of water overflow sensor detection area - 0 V when the sensor detects the area, 5 V when not detected. Check and replace water level sensor Is the MAIN PBA valve voltage normal? No Feed/NOS valve when roomtemperature water conditions are normal: DC 24 / 0 volts Check and replace MAIN PBA 4-8 Coway co., Ltd

41 Fault diagnosis 4-2 Control specifications Power connection detection functions Function 1. Power connection detection functions Explanation If power is connected to the product, power connection status is detected and displayed on the FND. If power is connected after installing the product, FND is displayed depending on the sensor conditions, and standby is maintained. FND display status (initial power connection status) - Hot water temperature display (refer to hot water setting mode) - Cold water temperature display (refer to cold water setting mode) - Water level display (low water, medium water, full water) Coway co., Ltd 4-9

42 Fault diagnosis HOT control function (heater control) Function 1. Heater control function Explanation If the HOT selection switch is ON, the heater is controlled according to water level and hot water temperature. - Heater ON temperature: 80 C (26.13 kω): revision (previously 84 C) - Heater OFF temperature: 94 C ( kω) HOT selection switch ON - The HOT function is selected if the HOT selection switch is pressed briefly (200 ms or more). - Heater output is controlled according to water level and hot water temperature after the HOT selection switch is ON for 1 second. - The heater only operates if low water level is detected. The heater does not operate if there is a water level sensor error or low water level is not detected. - FND display status H1 always kept ON, H2/H3 ON/OFF control according to hot water temperature HOT selection switch OFF - The HOT function is turned off if the HOT selection switch is pressed and held (1s or more). - Heater output is turned OFF after the HOT selection switch is OFF. - FND display status H1/H2/H3 kept off FND display control specifications according to hot water temperature are as follows. - ON/OFF control specifications according to the HOT segment's temperature are as follows. HOT Segment ON OFF H3 94 C ( kω) 80 C (26.13 kω) H2 79 C (27.06 kω) 74 C ( kω) H1 Always ON - Temperature detection range: 1.2 MΩ ~ 13 kω 4-10 Coway co., Ltd

43 Fault diagnosis Function 2. Hot water temperature sensor error display feature Explanation Hot water temperature sensor OPEN - FND's H3 flashes in cycles of 1 second ON / 1 second OFF H1/H2 stay off. - Heater output is OFF. Hot water temperature sensor short - FND's H3 flashes in cycles of 1 second ON / 1 second OFF H1/H2 stay off. - Heater output is OFF. During hot water temperature sensor open or short, the associated action occurs after a 1 second delay. If the hot water temperature sensor is operating normally, the FND display and heater operate according to hot water temperature. Hot water temperature sensor overheating function - If the hot water sensor reaches 99 C or more, the heater is cut off and H1/H2/H3 flash on the display. 3. Compressor, heater differential control function If the compressor and heater operate at the same time, they must operate at 1 second intervals. 4. Other Hot water temperature thermistor model: MMT-0.4B Thermistor temperature detection error range: ± 0.5 C or less The hot water temperature sensing circuit's partial pressure resistance is D grade (0.5 %). The hot water temperature is checked 100 times and, if it is within a set range at those 100 times, the temperature is detected as normal. Hot water temperature detection range: 1.2 MΩ ~ 13 kω Coway co., Ltd 4-11

44 Fault diagnosis COOL control function (compressor control) Function 1. Compressor control function Explanation If the COOL selection switch is ON, the compressor is controlled according to water level and cold water temperature. - Compressor ON temperature: 7.8 C ( kω) - Compressor OFF temperature: 5.7 C ( kω) + 20 minutes delayed operation (when 30 C or more) - After 1 minute of compressor operation, cold water temperature sensor detects and then a delay time is decided. - It is set at 20 minutes for 30 C or more; 9 minutes for between 15 C and 30 C; and 0 minutes for 15 C or less. - If the temperature sensor detects 5.7 C, the compressor stops after 20 minutes' delayed operation regardless of changes in temperature. If the temperature becomes 7.8 C (compressor ON temperature) or more, the 20 minutes' delayed operation is canceled. COOL selection switch ON - The COOL function is selected if the COOL selection switch is pressed briefly (200 ms or more). - Compressor output is controlled according to water level and cold water temperature after the COOL selection switch is ON for 5 minutes. - The compressor only operates if low water level is detected. The compressor does not operate if there is a water level sensor error or low water level is not detected. - FND display status C1 kept always ON C2/C3 controlled ON/OFF according to cold water temperature COOL selection switch OFF - The COOL function is turned off if the COOL selection switch is pressed and held (1s or more). - Compressor output is turned OFF after the COOL selection switch is OFF for 1 second. - FND display status C1/C2/C3 kept OFF 4-12 Coway co., Ltd

45 Fault diagnosis Function 1. Compressor control function Explanation FND display control specifications according to cold water temperature are as follows. - ON/OFF control specifications according to the COOL segment's temperature are as follows. COOL Segment ON OFF C3 5.7 C ( kω) 7.8 C ( kω) C2 9.0 C ( kω) 11.5 C ( kω) C1 Always ON - Temperature detection range: 0 C ~ 55 C (163.0 kω ~ 15 kω) 2. Cold water temperature sensor error display feature Cold water temperature sensor OPEN - FND's C3 flashes in cycles of 1 second ON / 1 second OFF. C1/C2 are off. - Compressor output is OFF. Cold water temperature sensor short - FND's C3 flashes in cycles of 1 second ON / 1 second OFF. C1/C2 are off. - Compressor output is OFF. Cold water temperature sensor overcooling - If the cold water temperature sensor detects 1 C or less, the compressor stops operating. C1/C2/C3 flash on the display. During cold water temperature sensor open or short, the associated action occurs after a 1 second delay. If the cold water temperature sensor is operating normally, the FND display and compressor operate according to water level and cold water temperature. The compressor starts 5 minutes after the point at which it had stopped. 3. Compressor, heater differential control function If the compressor and heater operate at the same time, they must operate at 1 second intervals. Coway co., Ltd 4-13

46 Fault diagnosis Function 4. Compressor operation delay time function Explanation The compressor starts 5 minutes after the point at which COOL selection mode was ON. If the power is turned ON again after being stopped while the COOL selection mode was ON, the compressor starts after 5 minutes. If it is restored and operates normally after a cold water temperature sensor error or overcooling while the COOL selection mode is ON, the compressor starts 5 minutes after it had stopped. 5. Cooling delay safety blocking function The cooling delay safety blocking function operates as follows. - If the compressor operates continuously for 150 minutes, its output is turned OFF for 5 minutes regardless of cold water temperature to prevent overcooling or ice formation. - After the compressor's output is OFF for 5 minutes, it restarts according to cold water temperature. - If 6.5 C or less is detected while the compressor has operated for 130 minutes or more, output is stopped. After the compressor's output is OFF for 5 minutes, it restarts according to cold water temperature control specifications. - When the cold water temperature control specifications are ON temperature (7.8 C) or more, the compressor starts. - If the cold water temperature control specifications are between ON temperature (7.8 C) and OFF temperature (5.7 C), the compressor does not start Coway co., Ltd

47 Fault diagnosis Function 6. COOL temperature fine control function (hardware) Explanation C/T UP function - The C/T UP jumper is cut to increase the control temperature 0.5 C ( 3.0 kω). COOL Segment ON OFF C3 6.2 C ( kω) 8.3 C ( kω) C2 9.5 C ( kω) 12.0 C ( kω) C1 Always ON - Temperature detection resistance range: kω ~ 12 kω C/T DOWN function - The C/T DOWN jumper is cut to decrease the control temperature 0.5 C ( 3.0 kω). COOL Segment ON OFF C3 5.7 C ( kω) 7.8 C ( kω) C2 9.0 C ( kω) 11.5 C ( kω) C1 Always ON The above data may vary depending on the method of calculation with figures by simple computation. - Temperature detection resistance range: 163 kω ~ 13 kω 7. Other Cold water temperature thermistor model: MLT-50B Thermistor temperature detection error range: ± 0.5 C or less The cold water temperature sensing circuit's partial pressure resistance is D grade (0.5 %). The cold water temperature is checked 100 times and, if it is within a set range at those 100 times, the temperature is detected as normal. Cold water temperature detection range: 0 C ~ 55 C ( 163 kω ~ 15 kω) Coway co., Ltd 4-15

48 Fault diagnosis Water level display function (capacitance water level detection equipment) Function 1. Types of water level detection sensors Explanation Low water level/medium water level/full water level/water overflow detection sensor: capacitance IC used (Chemtronics) 2. Sensor detection conditions If the water level sensor input is maintained equivalently for 3 seconds [1 second in test mode], normal operation is detected If the water overflow sensor is maintained for 20 seconds or more, water overflow is detected 3. Display operation Water overflow detection status : Water sensor FND (L1, L2, L3) 0.5 second ON/OFF periodic flashing. Water level sensor malfunction - Low water malfunction: Low water FND (L1) 0.5 second ON/OFF periodic flashing. L2, L3 FND are off. - Medium water malfunction: Medium water FND (L2) 0.5 second ON/OFF periodic flashing. L1, L3 FND are off. - Full water malfunction: Full water FND (L3) 0.5 second ON/OFF periodic flashing. L1, L2 FND are off. - Dual water level error: (Low water/medium water/full water) error + water overflow error, low water + medium water FND (L1 + L2) 0.5 second ON/OFF periodic flashing. L3 FND is off. - If water overflow is detected 3 times or more, an overflow-related error is indicated on the display and the related valve stops operating Coway co., Ltd

49 Fault diagnosis No. Low water Sensor status Display (LED) Valve operation Medium water Full water Over Low water Medium water Full water Feed NOS Malfunction information Normal restoration 1 Detected Detected Detected Not detected ON ON ON Close Open Normal - full water 2 Detected Detected Not detected Not detected ON ON OFF Open Open Normal - re-purification - water level increase 3 Detected Detected Not detected Not detected ON ON OFF Close Open Normal - re-purification - water level decrease Full water level valve operation after medium water level 30 minutes 4 Detected 5 Not detected Not detected Not detected Not detected Not detected Not detected Not detected ON OFF OFF Open Open Normal OFF OFF OFF Open Open Normal Restored when error canceled 6 Detected Not detected Detected Not detected OFF Blink OFF Close Open Medium water level detection malfunction 7 Not detected Not detected Detected Not detected OFF OFF Blink Close Open Full water level detection malfunction 8 Not detected Detected Not detected Not detected Blink + OFF OFF + Blink OFF Close Open Low/medium water level detection malfunction 9 Not detected Detected Detected Not detected Blink OFF OFF Close Open Low water level detection malfunction 10 Detected Detected Detected Detected 11 Not detected Not detected Not detected Detected Blink Blink Blink Close Close Water supply valve malfunction Water overflow sensor detection malfunction 12 Detected Detected Not detected Detected OFF OFF Blink Close Close Full water level / overflow error (dual error) 13 Detected 14 Detected Not detected Not detected Not detected Not detected Not detected Detected Detected Not detected Detected Not detected Detected Detected Detected Detected Blink Blink OFF Close Close Sensor detection malfunction + water overflow error Power reinserted 17 Not detected Detected Not detected Detected The #10 error is displayed when it occurs 3 times in total and operation is normal if over/full water level is canceled. Even 3 times in total can be cleared. Coway co., Ltd 4-17

50 Fault diagnosis Power failure protection function Function 1. Power failure protection function Explanation If power turns OFF and then ON again during regular operation, the HOT/COOL selection mode settings and temperature level settings (hidden function) from before OFF are maintained. Test mode (time decreasing function) Function 1. Test mode Explanation If power is connected and the COOL selection switch is pressed within 5 seconds after the FND flashes twice, test mode is entered. - If the selection switch is pressed after initial power connection, test mode is not entered. Cold water/hot water/water level upper bar flashes upper + middle flashes upper + middle + lower flashes upper + middle flashes, upper bar flashing repeats twice. If test mode is active, the delay time of 5 minutes for compressor restarting is canceled. The heater starts 1 second after compressor operation in the heater, compressor differential control function. Water overflow detection delay time (20 seconds) and water level detection delay time change to 1 second In test mode, the compressor operates at less than low water level when the compressor is ON If power is reconnected or 30 minutes elapses after test mode operation, test mode is canceled and normal mode is entered Coway co., Ltd

51 Fault diagnosis Temperature level setting function (hidden function) - hot water temperature level setting mode added for export Function 1. Temperature LEVEL setting function Explanation If power is connected and the HOT selection switch is pressed within 5 seconds after the FND flashes twice, LEVEL setting mode is entered. - If the selection switch is pressed after initial power connection, test mode is not entered. If the temperature LEVEL setting mode is entered, both compressor/heater operation controlled by the MAIN PBA are stopped. Temperature setting cold/hot water FND both flash. Initially, [factory settings] set at stage 3. Each time the HOT selection switch is pressed (1 second or more), changes in the order of H1/H2/H3 H1/H2 H1 H1/H2/H3. HEATER control temperature according to temperature LEVEL is as follows. HOT LEVEL Heater OFF Heater ON Remarks H1/H2/H3 flashing 94 C ( kω) 80 C (26.13 kω) Stage 3 [Korean temperature] H1/H2 flashing 90 C ( kω) 85 C ( kω) Stage 2 H1 flashing 84 C ( kω) 79 C ( kω) Stage 1 Coway co., Ltd 4-19

52 Fault diagnosis Function 1. Temperature LEVEL setting function Explanation Each time the COOL selection switch is pressed (1000 ms or more), changes in the order of C1/C2/C3 C1/C2 C1 C1/C2/C3. Compressor control temperature according to temperature LEVEL is as follows. COOL LEVEL Compressor OFF Compressor ON Remarks C1/C2/C3 flashing 5.7 C ( kω) + 20 minutes delayed operation 7.8 C ( kω) Stage 3 [Korean temperature] C1/C2 flashing C1 flashing 7.0 C ( kω) + 20 minutes delayed operation 9.0 C ( kω) + 20 minutes delayed operation 9.5 C ( kω) Stage C ( kω) Stage 1 Each time the temperature LEVEL changes, the set mode is immediately saved. If power is turned OFF and then ON again, the heater and compressor are controlled according to the set temperature of the saved temperature LEVEL. If the temperature LEVEL setting mode is entered after the temperature LEVEL is changed, the saved temperature LEVEL is displayed. If 15 seconds elapses after the temperature LEVEL setting function operates, the temperature LEVEL setting function is canceled and normal mode is entered. Each time the key is pressed, there is an additional 15 second delay Coway co., Ltd

53 MEMO Coway co., Ltd 4-21

54 Exploded view and parts list 5. Exploded view and parts list 5-1 Exploded view and parts list This document is Coway s technical property. Only the person approved by the company may use this document. 5-1 Coway co., Ltd

55 Exploded view and parts list Parts List No. Description Remark 1 COVER-FRONT UPPER ASSY 2 GRILLE-TRAY 3 TRAY 4 COVER-FRONT LOWER ASSY 5 HOSE-SILICONE-O/H 6 HOSE-SILICON MT_HT 7 PIPE-HT-OH 8 HOSE-SILICONE-H/T-DRAIN 9 FAUCET-HOT WATER ASSY 10 DECO-MULTI FAUCET ASSY 11 FAUCET-COLD ROOM WATER 12 BRACKET-FAUCET 13 COVER-FRONT PBA 14 CASE-MAIN PBA ASSY 15 VALVE-FEED-NOS 16 SEDIMENT FILTER-PLUS 14INCH 17 PRE-CARBON FILTER-14INCH 18 MEMBRANE FILTER-RO 14INCH 19 INNO-SENSE FILTER-PLUS 14INCH 20 VALVE-DRAIN CONTROL ELBOW 21 BRACKET-FILTER 22 COVER-TOP 23 CAP-MAIN TANK ASSY 24 SEPARATOR ASSY 25 COOLING COIL ASSY Coway co., Ltd 5-2

56 Exploded view and parts list No. Description Remark 26 TANK-MAIN ASSY 27 SENSOR-CTS WATER LEVEL L Over flow 28 SENSOR-CTS WATER LEVEL K Full water level 29 SENSOR-CTS WATER LEVEL J Middle water level 30 SENSOR-CTS WATER LEVEL I Low water level 31 SENSOR-COLD WATER THERMAL 32 INSULATION-MAIN TANK A 33 BRACKET-HEATING TANK ASSY 34 CONNECTOR-COLD WATER DRAIN ASSY 35 CONNECTOR-HOT WATER DRAIN ASSY 36 HEATING TANK ASSY 37 COMPRESSOR ASSY 38 PLATE-BASE DW ASSY 39 COVER-REAR 40 CONDENSER-WIRE ASSY 41 COVER-REAR 42 COVER-SIDE L ASSY 43 COVER-SIDE R ASSY 5-3 Coway co., Ltd

57 Parts location diagrams 6. Parts location diagrams 6-1 Electrical wiring diagram This document is Coway s technical property. Only the person approved by the company may use this document. CHP-671R CHP-671L Coway co., Ltd 6-1

58 Parts location diagrams 6-2 Water piping diagram CHP-671R Feed-NOS Valve Feed Water Feed Water Feed-NOS ValveLPS LPS Check Valve Check Valve Hand Valve Hand Valve Plus-Sediment Reject Water Reject Water Pre-Carbon Booster Pump Booster Pump Membrane Membrane Filter(RO) Filter(RO) Reject Water supply Valve Reject Water supply Valve Plus Plus Inno-sense Inno-sense Filter Filter Hot Water Drain Hot Water Drain Over Heating Over Heating Storage tank Storage tank Heating tank Heating tank Antibacterial Filter Antibacterial Filter Cooling tank Cooling tank Cool/Room Drain Cool/Room Drain Check Valve Check Valve Hot Cool/Room Water Hot Water Cool/Room Water Water CHP-671L Feed Water Feed Water FEED-NOS Valve Hand Valve Plus-Sediment Reject Water Reject Water Pre-Carbon Membrane Membrane Filter(RO) Filter(RO) Reject Water supply Valve Reject Water supply Valve Plus Plus Inno-sense Inno-sense Filter Filter Hot Water Drain Hot Water Drain Over Heating Over Heating Storage tank Storage tank Heating tank Heating tank Antibacterial Filter Antibacterial Filter Cooling tank Cooling tank Cool/Room Drain Cool/Room Drain Check Valve Check Valve Hot Cool/Room Water Hot Water Cool/Room Water Water 6-2 Coway co., Ltd

59 Parts location diagrams 6-3 PBA location diagram MAIN PBA CN16 2 CN19 3 CN15 SMPS AC IN COMP. Pin No. Signal Pin No. Signal 1 GS V 3 GS 1 Voltage rating that matches it on the 2 rating plate. 4 GS V V Coway co., Ltd 6-3

60 Parts location diagrams 4 CN13 HEATER 5 CN17 BOOST PUMP (Option) 6 CN18 NOS/FEED Pin No. Signal Pin No. Signal Pin No. Signal 1 Voltage rating that matches it on the 2 rating plate. 1 GS V 1 GS V V 4 GS 7 CN12 LEVEL SENSOR (LOW) 8 CN10 LEVEL SENSOR (MIDDLE) 9 CN7 LEVEL SENSOR (HIGH) Pin No. Signal Pin No. Signal Pin No. Signal 1 GS V 3 SIGNAL 1 GS V 3 SIGNAL 1 GS V 3 SIGNAL 0 CN6 LEVEL SENSOR (OVER)! CN4 COOL CN1 COOL SENSOR Pin No. Signal Pin No. Signal Pin No. Signal 1 GS V 3 SIGNAL 1 SIGNAL 2 GS V 2-3 SIGNAL 6-4 Coway co., Ltd

61 Parts location diagrams # CN2 DISPLAY Pin No. Signal 1 SIGNAL 2 GS 3 SIGNAL1 (SOURCE) 4 SIGNAL2 (SOURCE) 5 SIGNAL3 (SOURCE) 6 SIGNAL4 (SOURCE) 7 SIGNAL5 (SOURCE) 8 SIGNAL6 (SOURCE) 9 SIGNAL1 (SINK) 10 SIGNAL2 (SINK) 11 SIGNAL3 (SINK) 12 SIGNAL4 (SINK) V 14 GS 15 - Coway co., Ltd 6-5

62 Parts location diagrams FRONT PBA 1 1 CN1 DISPLAY Pin No. Signal Pin No. Signal 1 SIGNAL 9 SIGNAL1 (SINK) 2 GS 10 SIGNAL2 (SINK) 3 SIGNAL1 (SOURCE) 11 SIGNAL3 (SINK) 4 SIGNAL2 (SOURCE) 12 SIGNAL4 (SINK) 5 SIGNAL3 (SOURCE) V 6 SIGNAL4 (SOURCE) 14 GS 7 SIGNAL5 (SOURCE) 15-8 SIGNAL6 (SOURCE) 6-6 Coway co., Ltd

63 Parts location diagrams SMPS PBA CN2 OUT PUT - MAIN PBA 2 CN1 AC IN Pin No. Signal Pin No. Signal 1 GS V 3 GS 1 Voltage rating that matches it on the 2 rating plate. 4 GS V V Coway co., Ltd 6-7

64 MEMO 6-8 Coway co., Ltd

65 Reference information 7. Reference information 7-1 Names of each part Front Indicators Cold / Room water Changeover Faucet Hot water Faucet Cup-touch Lever Gutter Front Draining Door Front Cover Coway co., Ltd 7-1

66 Reference information Rear Top Cover Rear Cover Power Cord Inlet(Orange) Outlet (Blue, CHP-671R/L) 7-2 Coway co., Ltd

67 Reference information 7-2 Functions and reference information Explanation of operation and indication parts ( Indication Part / Operation Part) 1 Hot water temperature indicator 2 Cold water temperature indicator 2 Cold water temperature indicator 3 Hot water mode indicator 1 Hot water mode selection 1 button Hot water temperature indicator 5 Water level indicator No. Indication Part Name Explanation ater level indicator 3 Hot water mode indicator 1 Hot water mode selection button Hot water temperature indicator 4 Cold water mode indicator 4 Cold water mode indicator 2 Cold water mode selection button 2 Cold water mode selection button The indicator is turned on according to the hot water temperature. The more light, the hotter the water. 5 Water level indicator 2 C te in 4 C m in 2 Co m bu Cold water temperature indicator The indicator is turned on according to the cold water temperature. The more light, the colder the water. Hot water mode indicator When you select hot water mode, the indicator is turned on. Coway co., Ltd 7-3

68 5 Water level indicator Reference information button No. Indication Part Name Explanation Cold water mode indicator When you select cold water mode, the indicator is turned on. Water level indicator The indicator is turned on according to the water level in the storage tank. Basically, one bar is turned on. No. Operation part Name Explanation Hot water mode selection button Press to select/deselect hot water mode. Cold water mode selection button Press to select/deselect cold water mode. 7-4 Coway co., Ltd

69 Reference information To use cold water mode Explanation Reference picture 1. Press the cold water mode selection button and check if the cold water mode indicator is turned on. If you want to turn off cold water mode, press the selection button for about 2 seconds. When you are using the product for the first time, or if the cold water feature is off for a long time, then it takes about an hour for the water to reach a preset cold water temperature. To use hot water mode Explanation Reference picture 1. Press the hot water mode selection button and check if the hot water mode indicator is turned on. If you want to turn off hot water mode, press the selection button for about 2 seconds. When you are using the product for the first time, or if the hot water feature is off for a long time, then it takes about 30 minutes for the water to reach a preset hot water temperature. Coway co., Ltd 7-5

70 Reference information Types and functions of filters Filter name Material Function Plus sediment filter Polyester, polypropylene The Plus sediment filter removes particulate materials, residue, etc. from source water and protects the pre-carbon and membrane filters. Filter name Material Function Pre-carbon filter Activated carbon The pre-carbon filter removes chlorine from source water to protect the membrane filter and also removes harmful volatile organic compounds from source water. Filter name Material Function Membrane filter (RO) Polysulfone + polyamide The membrane filter (RO) removes pollutants such as heavy metals, microorganisms, inorganic ions and organic matter from the source water. Water with concentrated pollutants is expelled from the filtered water through the outlet tubing. Filter name Material Function Nanotrap (R) filter Nanoalumina fiber, polyester, polyolefin, cellulose The nanotrap (R) filter removes particulates from water and selectively filters out microorganisms, bacteria, viruses, etc. Filter name Material Function Plus-Innosense filter Polyethylene + activated carbon, polysulfone The Plus-Innosense filter removes odorous materials and improves water taste. 7-6 Coway co., Ltd

71 Reference information Water Filtration Process The 5-step water filtering system (CHP-671R/L) STEP 1 PLUS-SEDIMENT FILTER This plus sediment filter has the functions to remove infusible particles from feed water and to protect membrane and pre-carbon filter from being plugged. STEP 2 PRE-CARBON FILTER This pre-carbon filter has the functions to remove chlorine to prevent hydrolysis of membrane filter and to absorb harmful organic chemicals from feed water. STEP 3 RO MEMBRANE FILTER RO membrane filter has the function to remove water contaminants such as heavy metals, waterborne microorganisms and harmful organic chemicals etc. STEP 4 PLUS INNO-SENSE FILTER This plus inno-sense filter has the functions to improves taste of water by removing pollutants, such as odor-causing substances and soluble contaminant, chlorine, volatile organic compounds (VOC s). STEP 5 ANTI-BACTERIAL FILTER This antibacteril filter has the function to control microorganism propagation in water. Coway co., Ltd 7-7

72 Reference information ANTIBACTERIAL FILTER Reject Water Outlet PLUS SEDIMENT FILTER PRE-CARBON FILTER RO MEMBRANE FILTER PLUS INNO-SENSE FILTER ANTIBACTERIAL FILTER Uses of reject water The reject water should be used for cleaning the restroom, the house, clothes, or purposes other than drinking. Never use the reject water for a drinking or cooking. 7-8 Coway co., Ltd

73 MEMO Coway co., Ltd 7-9

74 MEMO 7-10 Coway co., Ltd