Field Setting for Smart IOT Inverter Outdoor Unit

1/9 Field Setting for Smart IOT Inverter Outdoor Unit

2/9 1 Default display LED on main control board can display the operating state of outdoor unit (ODU). 7 segment display instructions SEG1: Normally blank, but it displays codes 1~9 accordingly if there is damaged sensor and demand control requirement. State Codes Description 0 IOT sofeware is updating 1 High pressure sensor fault backup state 2 Low pressure sensor fault backup state 3 Discharge temperature sensor(td) fault backup state 4 IPM module temperature sensor(tf) fault backup state 5 Ambient temperature sensor(ta) fault backup state 6 Condenser coil sensor(th) fault backup state 7 Suction temperature sensor(ts) fault backup state 8 Liquid temperature sensor(tl) fault backup state 9 Demand response state SEG2: Normally blank, but it will display code accordingly as below if outdoor unit is running under limited condition. Protection State Codes Description 0 Running under high pressure limit 1 Running under low pressure limit 2 Running under discharge temperature limit 3 Running under IPM module temperature limit 4 Running under compressor current limit SEG3: It displays outdoor unit s operation mode. State Codes Description 0 Standby without running signal (Y signal=off) 1 Ready to start after receiving running signal (Y signal=on) *Note 2 Cooling mode 3 Heating mode 4 Oil return 5 Defrost 6 Forced defrost 7 Test mode 7 (high frequency) 8 Test mode 8 (low frequency) Note: Compressor waits 6 minutes to restart.

3/9 2 Setting by dip switches Outdoor unit s functions can be applied by pushing buttons and dialing switch on the job site. The following table shows the setting contents for SW1 switch. ON DIP 1 2 3 4 Dip switch Description NO. Setting item State Content 1 Reserved - - ON 2 or 4Ton 2 Capacity selection *1 OFF(factory) 3 or 5Ton 3 AC only/heat pump selection ON AC only OFF(factory) Heat pump 4 Response for IOT ON Do not respond to IOT command OFF(factory) Respond to IOT command *1 Keep the ODU s dip switch when 5Ton matches with 2 or 3 Ton indoor unit for hyper heating. 3 Setting by pushing button Query and setting operation can be done by pushing buttons on PC board. Off Blinking On BS1 BS2 BS3 Push buttons BS1: Menu button BS2: UP button BS3: Spot check and confirm button Mode types 1 Default mode(push BS3) Used to spot check system operating states. (e.g. high pressure, compressor speed and error code, etc.) 2 Setting mode (push BS1 for 5 seconds) Used to set special functions. 3 Query setting mode (short push BS1) Used to query current setting mode.

4/9 Mode change procedure Push BS1 button, the modes can be changed as follows. Push and hold the BS1for 5 seconds. Default mode (Use BS3 button to query operating states.) Push BS1 once Setting mode Query setting mode Symbol selection (BS2 button) Setting item selection (BS2 button) Contents display Symbol selection (BS2 button) Contents display Push BS1 once

5/9 4 Default mode System state can be showed on the 7 segments display of outdoor unit. can get code number and corresponding detailed information with an interval of one second. Example: Code number Detailed information No. Number content Example Description (Round numbers) Default Refer to default display instructions 902 9:Demand 0:Running under high pressure 2:Cooling mode AC only or heat pump and outdoor unit C:AC only(h: heat pump) 01- C3 capacity 3:3Ton(2,3,4,5Ton) 02- Sub cooling 10 10F 03- Superheat 18 18F 04- Frequency of compressor 56 56rps 05- Electric expanse valve opening 360 360pls 06- Step of fan 8 8th Step 07- Low pressure (LP sensor) 145 145psig 08- High pressure (HP sensor) 350 350psig 09- TA temperature 95 95F 10- TS temperature 70 70F 11- TD temperature 170 170F 12- TH temperature 80 80F 13- TL temperature 70 70F 14- TF temperature 150 150F 15- Target evaporation temperature(tes) 43 43F 16- Current evaporation temperature(te) 43 43F 17- Target condensation temperature(tcs) 104 104F 18- Current condensation temperature(tc) 104 104F 19- Compressor current 10.1 10.1A 20- Less refrigerant signal 0 0: none 1: level 1 2: level 2 21- Main software version A01 A01 version 22- Inverter software version b01 b01 version 23- Current fault E1 Display up to 5 *1 24- Last fault F1 --: none 25- The fault before last fault F2 --: none *1 When multi-error codes exist at the same time, with an interval of 1 second, each code will be displayed one by one.

5 Setting mode Hold BS1 button for 5 seconds to enter the parameter setting interface. Setting can be done from cloud if the unit is equipped with IOT gateway. The latest setting will be taken as the final one. Symbol Function Item Description n00 n01 n02 n03 n04 n05 n06 n07 n08 Mode choice Forced heating stop when ambient temperature is lower than specify value. Changing to heat by gas furnace or boiler instead in cold winter. Outdoor unit D/W terminal outputs 24V at defrost operation or forced heating stop. Outdoor unit D/W terminal outputs 24V when ambient temperature is lower than specify value for auxiliary heating resource to start. Defrost mode setting Silent mode setting Night time setting- start time Night time setting- end time Forced defrost 1 Dehumidification *1 2 High capacity mode *2 0 TA<-22F Forced heating stop 1(factory) TA<-3F Forced heating stop 2 TA<5F Forced heating stop 3 TA<10F Forced heating stop 4 TA<15F Forced heating stop ON (24VAC output) 1 OFF (No 24VAC output) TA<15F (24VAC output) 1 TA<10F (24VAC output) 2 TA<5F (24VAC output) 3 TA<-3F (24VAC output) 4 OFF (No 24VAC output) 0 Easy to defrost for high humidity area 1(factory) Standard mode 2 Hard to defrost for low humidity area None silent mode 1 Silent mode(level 1) 2 Super silent mode(level 2) 3 Night silent mode(level 1) 4 Night super silent mode(level 2) 0 17:00 1(factory) 18:00 2 19:00 3 20:00 4 21:00 0 5:00 1(factory) 6:00 2 7:00 3 8:00 4 9:00 OFF 1 ON *3 *Note 1.The evaporation temperature of indoor coil can lower down to 28F. 2.The evaporation temperature of indoor coil can lower down to 28F, condensate temperature can go up to 122F. 3.System enters defrost after finishing the start up control. 6/9

Query Setting mode example 7/9 Check current silent mode setting (n05) Step1 Push BS1 to enter query mode. Step2 Push BS2 to select item (n05 for this case). Step3 to check current setting (n05 = 1). Step4 and go to Step 2 for other setting check. Push BS1 to return. Example for mode choice (n00) setting How to choose mode? Step1 Push and hold BS1 for 5 seconds. Step2 Push BS2 to select item (Factory default is n00). Step3 to enter sub-item setting. Step4 Push BS2 to change subitem(n00 = 1). Step5 to save setting. Step6 Push BS1 to return.

8/9 Example for n02 & n03 setting Y signal from thermostat Heat Pump Outdoor Unit Air Handler with Electric Heater R C W1 G W O Y D/W terminal outputs 24V is available when Y signal = ON. C Auxiliary heating call from outdoor unit to air handler with electric heater or gas furnace, or other third-party heat source using 24V control signal. n02 Outdoor unit D/W terminal outputs 24VAC at defrost operation or forced heating stop(n01). 0 (factory): ON (24V output) 1: OFF (No 24V output) n03 Outdoor unit D/W terminal outputs 24VAC once ambient temperature is lower than specific value for auxiliary heating resource to start. (Only available when n02 = 0 and Y signal = ON). : TA<15 F (24V output) 1: TA<10 F (24V output) 2: TA<5 F (24V output) 3: TA<-3 F (24V output) 4: OFF (No 24V output) Example: Y signal = ON n02 = 0 n03 = 1 Outdoor unit D/W terminal outputs 24VAC when ambient temperature is lower than 10 F. ambient temperature D/W output OFF ON

9/9 Illustration for n05~07 setting n05 Silent mode setting. 0 (Factory): none silent mode 1: Silent mode (level 1) 2: Super silent mode (level 2) 3: Night silent mode (level 1) 4: Super night silent mode (level 2) Noise of silent mode is 3 db lower than normal mode. Noise of super silent mode is 6 db lower than normal mode. n06 Night time setting - Start time. 0: 17:00 1: 18:00 (Factory) 2: 19:00 3: 20:00 4: 21:00 n07 Night time setting - End time. 0: 5:00 1: 6:00 (Factory) 2: 7:00 3: 8:00 4: 9:00 Example 1: n05 = 0 n06 = / n07 = / Example 2: n05 = 1 n06 = / n07 = / Silent mode (level 1) Example 3: n05 = 2 n06 = / n07 = / Super silent mode (level 2) Example 4: n05 = 3 n06 =0 n07 = 1 Silent mode (level 1) Example 5: n05 = 4 n06 =2 n07 = 3 Super silent mode (level 2)