ir-onditioners PK-RP FL INSTLLTION MNUL FOR INSTLLR For safe and correct use, please read tis installation manual torougly before installing te air-conditioner unit. nglis
ontents. Safety precautions.... Installation location.... Installing te indoor unit... 4. Installing te refrigerant piping... 5 5. rainage piping work (Fig. 5-)... 6 6. lectrical work... 6 7. Test run... 8. Safety precautions s efore installing te unit, make sure you read all te Safety precautions. s Please report to your supply autority or obtain teir consent before connecting tis equipment to te power supply system. escribes precautions tat must be observed to prevent danger of injury or deat to te user. aution: escribes precautions tat must be observed to prevent damage to te unit. fter installation work as been completed, explain te Safety Precautions, use, and maintenance of te unit to te customer according to te information in te Operation Manual and perform te test run to ensure normal operation. ot te Installation Manual and Operation Manual must be given to te user for keeping. Tese manuals must be passed on to subsequent users. sk a dealer or an autorized tecnician to install te unit. For installation work, follow te instructions in te Installation Manual and use tools and pipe components specifically made for use wit refrigerant specified in te outdoor unit installation manual. Te unit must be installed according to te instructions in order to imize te risk of damage from eartquakes, typoons, or strong winds. n incorrectly installed unit may fall down and cause damage or injuries. Te unit must be securely installed on a structure tat can sustain its weigt. If te air conditioner is installed in a small room, measures must be taken to prevent te refrigerant concentration in te room from exceeding te safety limit in te event of refrigerant leakage. Sould te refrigerant leak and cause te concentration limit to be exceeded, azards due to lack of oxygen in te room may result... efore installation (nvironment) aution: o not use te unit in an unusual environment. If te air conditioner is installed in areas exposed to steam, volatile oil (including macine oil), or sulfuric gas, areas exposed to ig salt content suc as te seaside, te performance can be significantly reduced and te internal parts can be damaged. o not install te unit were combustible gases may leak, be produced, flow, or accumulate. If combustible gas accumulates around te unit, fire or explosion may result. o not keep food, plants, caged pets, artwork, or precision instruments in te direct airflow of te indoor unit or too close to te unit, as tese items can be damaged by temperature canges or dripping water... efore installation or relocation aution: e extremely careful wen transporting te units. Two or more persons are needed to andle te unit, as it weigs 0 kg or more. o not grasp te packaging bands. Wear protective gloves as you can injure your ands on te fins or oter parts. e sure to safely dispose of te packaging materials. Packaging materials, suc as nails and oter metal or wooden parts may cause stabs or oter injuries... efore electric work aution: e sure to install circuit breakers. If not installed, electric sock may result. For te power lines, use standard cables of sufficient capacity. Oterwise, a sort circuit, overeating, or fire may result. Wen installing te power lines, do not apply tension to te cables..4. efore starting te test run aution: Turn on te main power switc more tan ours before starting operation. Starting operation just after turning on te power switc can severely damage te internal parts. efore starting operation, ceck tat all panels, guards and oter protective parts are correctly installed. Rotating, ot, or ig voltage parts can cause injuries. : Indicates an action tat must be avoided. : Indicates tat important instructions must be followed. : Indicates a part wic must be grounded. : Indicates tat caution sould be taken wit rotating parts. : Indicates tat te main switc must be turned off before servicing. : eware of electric sock. : eware of ot surface. LV: t servicing, please sut down te power supply for bot te Indoor and Outdoor Unit. arefully read te labels affixed to te main unit. Ventilate te room if refrigerant leaks during operation. If refrigerant comes into contact wit a flame, poisonous gases will be released. ll electric work must be performed by a qualified tecnician according to local regulations and te instructions given in tis manual. Use only specified cables for wiring. Te teral block cover panel of te unit must be firmly attaced. Use only accessories autorized by Mitsubisi lectric and ask a dealer or an autorized tecnician to install tem. Te user sould never attempt to repair te unit or transfer it to anoter location. fter installation as been completed, ceck for refrigerant leaks. If refrigerant leaks into te room and comes into contact wit te flame of a eater or portable cooking range, poisonous gases will be released. Wen te room umidity exceeds 80% or wen te drainpipe is clogged, water may drip from te indoor unit. o not install te indoor unit were suc dripping can cause damage. Wen installing te unit in a ospital or communications office, be prepared for noise and electronic interference. Inverters, ome appliances, ig-frequency medical equipment, and radio communications equipment can cause te air conditioner to malfunction or breakdown. Te air conditioner may also affect medical equipment, disturbing medical care, and communications equipment, arg te screen display quality. Termal insulation of te refrigerant pipe is necessary to prevent condensation. If te refrigerant pipe is not properly insulated, condensation will be formed. Place termal insulation on te pipes to prevent condensation. If te drainpipe is installed incorrectly, water leakage and damage to te ceiling, floor, furniture, or oter possessions may result. o not clean te air conditioner unit wit water. lectric sock may result. Tigten all flare nuts to specification using a torque wrenc. If tigtened too muc, te flare nut can break after an extended period. e sure to ground te unit. If te unit is not properly grounded, electric sock may result. Use circuit breakers (ground fault interrupter, isolating switc (+ fuse), and molded case circuit breaker) wit te specified capacity. If te circuit breaker capacity is larger tan te specified capacity, breakdown or fire may result. o not operate te air conditioner witout te air filter set in place. If te air filter is not installed, dust may accumulate and breakdown may result. o not touc any switc wit wet ands. lectric sock may result. o not touc te refrigerant pipes wit bare ands during operation. fter stopping operation, be sure to wait at least five utes before turning off te main power switc. Oterwise, water leakage or breakdown may result.
. Installation location H.. Outline dimensions (Indoor unit) (Fig. -) Select a proper position allowing te following clearances for installation and maintenance. (mm) Models W H F RP.5, 400 5 40 Min. 50 Min. 50 Min. 0 Min. 50 Min. 50 RP4 680 5 40 Min. 50 Min. 50 Min. 0 Min. 50 Min. 50 W F Mount te indoor unit on a ceiling strong enoug to witstand te weigt of te unit. Fig. -.. Outline dimensions (Outdoor unit) Refer to te outdoor unit installation manual.. Installing te indoor unit 4 5 6 7 8 9.. eck te indoor unit accessories (Fig. -) Te indoor unit sould be supplied wit te following accessories. PRTNUMR SSORY QUNTITY LOTION OF STTING Wall-fixing bracket Fix at te back of te unit Tapping screw 4 5 Insulation material 4 and 4 (large) + (small) 5 Felt tape Set inside te unit 6 rain socket 7 Wireless remote controller 8 Remote controller older 9 lkali batteries Fig. - RP.5, RP (mm) 990 45 455 0 9=(90) 85 900 9 8 8 9 G 0 0 80 9.. Installing te wall mounting fixture (Fig. -) ) Setting te wall mounting fixture and piping positions s Using te wall mounting fixture, detere te unit s installation position and te locations of te piping oles to be drilled. efore drilling a ole in te wall, you must consult te building contractor. RP4 5 40 80 F H G 70 9=(8) 80 60 4 595 8 8 900 9 9 95 5 40 80 80 4 H F H Fig. - 750 90 84 0 0 I 45 85 80 60 90 0 84 0 0 0 I 80 9 60 80 Indoor unit center line Left drain range Rigt drain range Hole for tapping screw olt ole F Hole for tapping screw G ontour of te unit H Knockout ole for left rear piping I Rear piping access ole (90-00 mm dia.) ) rilling te piping ole (Fig. -) s Use a core drill to make a ole of 90-00 mm diameter in te wall in te piping direction, at te position sown in te diagram to te left. s Te ole sould incline so tat te outside opening is lower tan te inside opening. s Insert a sleeve (wit a 90 mm diameter and purcased locally) troug te ole. Note: Te purpose of te ole s inclination is to promote drain flow. Sleeve Hole (Indoors) Wall (Outdoors) Fig. -
. Installing te indoor unit RP.5, RP Min.65 RP4 Min.65 Fig. -4 Min.60 Min.500 Min.60 Min.500 Max.5 Fig. -5 ) Installing te wall mounting fixture s Since te indoor unit weigs near 0 kg, selection of te mounting location requires toroug consideration. If te wall does not seem to be strong enoug, reinforce it wit boards or beams before installation. s Te mounting fixture must be secured at bot ends and at te centre, if possible. Never fix it at a single spot or in any nonsymetrical way. (If possible, secure te fixture at all te positions marked wit a bold arrow.) (Fig. -4) s Secure te wall mounting fixture troug its middle row of -mm-dia. oles using locally purcased bolts (troug bolts, bolt ancor and nut ancor) of M0 or W/8 treading. Te bolt tip must not protrude by more tan 5 mm from te wall surface. (Fig. -5) Use at least two bolts for a concrete wall, and at least four bolts for a foamed concrete wall. Wall-fixing bracket Mounting bolt Wall If possible, secure te fixture at all te positions marked wit a bold arrow. aution: Te unit body must be mounted orizontally... Preparation for piping connection Remove te vinyl band tat olds te drain piping. Tis vinyl band can be used to temporarily attac te pipes to te wall mounting fixture wile connecting te left pipe. ) Rear, rigt and lower piping (Fig. -6) Remove te rigt side panel. ) Left and left rear piping Remove te side panel. Fig. -6 5 4 4 G H J Fig. -8 F Fig. -9 Fig. -7 I K Wen embedding pipes into te wall (Fig. -7) Wen te refrigerant pipe, drain pipes, internal/external connection lines, etc., are to be embedded into te wall in advance, te extruding pipes, etc., may ave to be bent and ave teir lengt modified to te unit. Make te pipes to be embedded sligtly longer tan necessary, and install. Rigt side panel On-site piping Troug ole Wall-fixing bracket Remove te five screws indicated by te arrows in te diagram. (Fig. -8) Remove te left side panel, ten te lower panel.. Wile pusing up te front lower portion of te side panel (to disengage te side panel catc from te unit catc), slide te upper portion of te side panel to te left. Wen te indoor unit is already mounted, be sure te unit does not fall from te wall mounting fixture. For reassembly, put te catc at te front lower portion of te side panel over te unit body and pus it to te rigt. Grille atc Left side panel Side panel Lower panel F Unit body Structure of te side panel and te unit body (Fig. -9). Panel catc engages te unit body catc.. Panel catc is put in te unit body ole.. Panel catc engages te unit body catc. 4. Seet metal of te unit body enters te panel. 5. Panel catc enters te unit body ole. 4 Te drain ose can be connected at two different positions. Use te most convenient position and, if necessary, excange te position of te drain pan, rubber plug and te drain ose. (Fig. -0) G rain pan H and I Plug J rain ose K Screwdriver G H K I 4 Fig. -0
. Installing te indoor unit.4. Mounting te indoor unit (Fig. -) Make sure to ang te metal catces of te indoor unit over te ooks of te wall mounting fixture. Wen te piping as been completed, use te securing screws to fix te indoor unit on te wall mounting fixture. Note: eck tat te catces of te indoor unit securely fit over te ooks of te wall mounting fixture. Te screw indicated by te bold arrow is used only during transportation and sould be removed. Remove te screw before installation if tere is not enoug space at te left side to remove it once te unit as been installed. Indoor unit Wall fixing bracket Hook Metal catc of te indoor unit Securing screws Fig. - 4. Installing te refrigerant piping 90 ±0.5 ø 45 ± R0.4~R0.8 Fig. 4- Flare cutting dimensions opper pipe O.. Flare dimensions (mm) ø dimensions (mm) ø6.5 8.7-9. ø9.5.8 -. ø.7 6. - 6.6 ø5.88 9. - 9.7 5 0 8 Fig. 4- F G H I 4 55 0 58 4.. onnecting pipes (Fig. 4-) Wen commercially available copper pipes are used, wrap liquid and gas pipes wit commercially available insulation materials (eat-resistant to 00 or more, tickness of mm or more). Te indoor parts of te drain pipe sould be wrapped wit polyetylene foam insulation materials (specific gravity of 0.0, tickness of 9 mm or more). pply tin layer of refrigerant oil to pipe and joint seating surface before tigtening flare nut. Use two wrences to tigten piping connections. Use refrigerant piping insulation provided to insulate indoor unit connections. Insulate carefully. Flare nut tigtening torque opper pipe O.. Flare nut O.. Tigtening torque (mm) (mm) (N m) ø6.5 7 4-8 ø9.5 4-4 ø.7 6 49-6 ø5.88 9 68-8 ø5.88 6 00-0 pply refrigerating macine oil over te entire flare seat surface. Use te flare nuts as follows. RP.5, Indoor unit (Liquid) Flare nut attaced to indoor liquid valve Indoor unit (Gas) Flare nut attaced to indoor gas valve Outdoor unit (Liquid) Flare nut attaced to outdoor liquid valve Outdoor unit (Gas) Flare nut attaced to outdoor gas valve RP4 Flare nut attaced to indoor liquid valve * Flare nut in outdoor unit accessories Flare nut attaced to outdoor liquid valve Flare nut attaced to outdoor gas valve * In case tat te flare nut attaced to indoor gas valve is used, gas leakage or even pipe extraction will occur. 4.. Positioning refrigerant and drain piping Position of refrigerant and drain piping (Fig. 4-) etere te position of te knockout oles on te unit body (Fig. 4-) Make te knockout oles using a saw blade or an adequate knife. 0 7 65 0 aution: Te side panel must be removed before drilling a knockout ole in it. If a ole is made wit te side panel in place, te refrigerant pipe witin te unit could be damaged. 4 00 9 7 74 9 98 Fig. 4-40 7 74 9 4 00 K L-saped connection pipe (for gas piping) (Fig. 4-4) 07 mm (RP.5, ), 0 mm (RP4) rain ose Liquid pipe Gas pipe rain ose in left-side piping F Knockout oles on te unit body G For left-side piping H For lower-side piping I For rigt-side piping J L-saped connection pipe (option) K Unit side L On-site piping side M Piping 80 M J Fig. 4-4 L J 5
4. Installing te refrigerant piping Liquid pipe and (large) 4 4.. Refrigerant piping (Fig. 4-5) ) Indoor unit aution: efore connecting rigt, lower, left or left rear piping, connect te supplied L- saped connection pipe to te on-site piping. Insulation material Wen using commercially available copper pipes: Gas pipe and (small) 4 Termal insulating material for liquid pipe and (small) 4 Tape Refrigerant and rainage Piping Sizes Item Model RP.5, RP4 Refrigerant Liquid Oø9.5 (/8") Oø9.5 (/8") piping Gas Oø5.88 (5/8") Oø9.05 (/4") Unit drainage piping PV pipe Iø0 (/6") Termal insulating material for refrigerant piping Fig. 4-5 5. rainage piping work (Fig. 5-) Liquid pipe On-site drain pipe O. ø0 Unit s drain pipe rain pipes sould ave an inclination of /00 or more. Use PV pipe VP-0 for drain piping. rain pipes can be cut wit a knife at te connection point according to te on-site conditions. Wen connecting te VP-0, use adesive to attac te supplied drain socket. To prevent dripping condensation, put felt tape 5 over te insulation materials on te refrigerant and drain pipes witin te unit as sown in te diagram. rain socket pply PV adesive Felt tape 5 Liquid pipe aution: Te drain pipe sould be installed according to tis Installation Manual to ensure correct drainage. Termal insulation of te drain pipes is necessary to prevent condensation. If te drain pipes are not properly installed and insulated, condensation may drip on te ceiling, floor or oter possessions. 6. lectrical work Fig. 5- rain pipe Gas pipe F F 6.. Indoor unit (Fig. 6-) Remove te rigt side panel. To do tis, remove te screws on te lower and rigt sides. Remove te securing screw on te teral board cover to take away te cover. onnect te power, control line. (.5 mm poler). s Tis cables sall not ligter tan polycloroprene seated flexible cord. (design 45 I 57) s Fix power source wiring to control box using buffer busing for tensile force. (PG connection or te like.) Since te electric box may need to be pulled out for servicing or oter occasions, wires must ave enoug slack. lass grounding work must be conducted (grounding wire size:.5 mm or more). fter wiring is completed, reinstall te parts in te reverse order of removal. 6 Fig. 6- I J S S S G H Wiring sould be done so tat te power lines are not subject to tension. Oterwise, eat may be generated or fire may occur. Teral board cover Screw and Printed circuit board cover Rigt side panel F oupler connector G Teral board for remote controller (option) H Teral board for control lines from te outdoor unit I Power supply wiring & connection wiring J ord clamp
6. lectrical work ON STN OOL HT OFF Y Fig. 6- MOL SLT,4 MOL SLT ON/OFF TMP MO FN VN UTO STOP UTO STRT HK LOUVR TST RUN ST RST LOK Fig. 6-6- Installing te wireless remote controller ) Installation area rea in wic te remote controller is not exposed to direct sunsine. rea in wic tere is no nearby eating source. rea in wic te remote controller is not exposed to cold (or ot) winds. rea in wic te remote controller can be operated easily. rea in wic te remote controller is beyond te reac of cildren. ) Installation metod (Fig. 6-) ttac te remote controller older to te desired location using two tapping screws. Place te lower end of te controller into te older. Remote controller Wall isplay panel Receiver Te signal can travel up to approximately 7 meters (in a straigt line) witin 45 degrees to bot rigt and left of te center line of te receiver. ) Setting (Fig. 6-) Insert batteries. Press te ST button wit someting sarp at te end. MOL SLT blinks and Model No. is ligted. Press te temp button to set te Model No. 4 Press te ST button wit someting sarp at te end. MOL SLT and Model No. are ligted for tree seconds, ten turned off. Indoor Outdoor Model No. PLH, PH, PKH-P GH PUH 00 PL, P, PK-P G PUH, PUHZ 00 PU 0 PKH-P FH PUH 00 PK-P F, PK-RP F PUH, PUHZ 00 PU 05 F HK ON/OFF TMP MO FN VN UTO STOP UTO STRT HK LOUVR TST RUN ST RST LOK,4 ON/OFF TMP MO FN VN UTO STOP UTO STRT HK LOUVR TST RUN ST RST LOK Fig. 6-4 HK, HK Fig. 6-5 4 HK HK 4) ssigning a remote controller to eac unit (Fig. 6-4) ac unit can be operated only by te assigned remote controller. Make sure eac pair of an indoor unit P board and a remote controller is assigned to te same pair No. 5) Wireless remote controller pair number setting operation Press te ST button wit someting sarp at te end. Start tis operation from te status of remote controller display turned off. MOL SLT blinks and Model No. is ligted. Press te button twice continuously. Pair No. 0 blinks. Press te temp button to set te pair number you want to set. 4 Press te ST button wit someting sarp at te end. Set pair number is ligted for tree seconds ten turned off. Pair No. of wireless remote controller Indoor P board 0 Factory setting ut J4 ut J4 ~9 ut J4, J4 6.. Function Settings (Fig. 6-5) anging te power voltage setting e sure to cange te power voltage setting depending on te voltage used. Go to te function select mode Press te HK button F twice continuously. (Start tis operation from te status of remote controller display turned off.) HK is ligted and 00 blinks. Press te temp button once to set 50. irect te wireless remote controller toward te receiver of te indoor unit and press te button. Setting te unit number Press te temp button and to set te unit number 00. irect te wireless remote controller toward te receiver of te indoor unit and press te button. Selecting a mode nter 04 to cange te power voltage setting using te and buttons. irect te wireless remote controller toward te receiver of te indoor unit and press te button. urrent setting number: = beep (one second) = beeps (one second eac) = beeps (one second eac) 4 Selecting te setting number Use te and buttons to cange te power voltage setting to 0 (40 V). irect te wireless remote controller toward te sensor of te indoor unit and press te button. 5 To select multiple functions continuously Repeat steps and 4 to cange multiple function settings continuously. 6 omplete function selection irect te wireless remote controller toward te sensor of te indoor unit and press te button. Note: Wenever canges are made to te function settings after construction or maintenance, be sure to record te added functions wit an, in te eck column provided on te cart. 7
6. lectrical work Function table Select unit number 00 Mode Power failure automatic recovery Indoor temperature detecting LOSSNY connectivity Power voltage uto mode (only for PUHZ) Settings Not available vailable Indoor unit operating average Set by indoor unit s remote controller Remote controller s internal sensor Not Supported Supported (indoor unit is not equipped wit outdoor-air intake) Supported (indoor unit is equipped wit outdoor-air intake) 40 V 0 V, 0 V nergy saving cycle automatically enabled nergy saving cycle automatically disabled Select unit numbers 0 to 0 or all units (L [wired remote controller]/07 [wireless remote controller]) Mode Filter sign Fan speed No. of air outlets Installed options (ig-performance filter) Up/down vane setting nergy saving air flow (Heating mode) 7. Test run Settings 00Hr 500Hr No filter sign indicator Standard (PLH/PL-P (H)/PL-RP )/Silent (PLH/PL- P K(H), PH/P) Hig ceiling (PLH/PL-P (H)/PL-RP )/Standard (PLH/ PL-P K(H), PH/P) Hig ceiling (PLH/PL-P (H)/PL-RP )/Hig ceiling (PLH/PL-P K(H), PH/P) 4 directions directions directions Not supported Supported No vanes quipped wit vanes (vanes angle setup ) quipped wit vanes (vanes angle setup ) isabled nabled Mode no. Setting no. Initial setting setting 0 0 0 04 05 Mode no. Setting no. Initial setting setting 07 08 09 0 7.. efore test run s fter completing installation and te wiring and piping of te indoor and outdoor units, ceck for refrigerant leakage, looseness in te power supply or control wiring, wrong polarity, and no disconnection of one pase in te supply. s Use a 500-volt megommeter to ceck tat te resistance between te power supply terals and ground is at least.0mω. s o not carry out tis test on te control wiring (low voltage circuit) terals. o not use te air conditioner if te insulation resistance is less tan.0mω. Insulation resistance Turn on te power at least ours before starting operation. - Starting operation immediately after turning on te main power switc can result in severe damage to internal parts. Keep te power switc turned on during te operational season. 7.. Test run 7... Using wireless remote controller (Fig. 7-) Turn on te power to te unit at least ours before te test run. TST RUN HK Press te TST RUN button twice continuously. (Start tis operation from te status of remote controller display turned off.) TST RUN and current operation mode are displayed. 7,4 ON/OFF TMP MO FN VN UTO STOP UTO STRT HK LOUVR TST RUN ST RST LOK Fig. 7-5 6 4 ON/OFF TMP MO FN VN UTO STOP UTO STRT HK LOUVR TST RUN ST RST LOK Fig. 7- Press te MO button to activate OOL mode, ten ceck weter cool air is blown out from te unit. 4 Press te MO button to activate HT mode, ten ceck weter warm air is blown out from te unit. 5 Press te FN button and ceck weter fan speed canges. 6 Press te VN button and ceck weter te auto vane operates properly. 7 Press te ON/OFF button to stop te test run. Note: Point te remote controller towards te indoor unit receiver wile following steps to 7. It is not possible to run te in FN, RY or UTO mode. 7... Using SW4 in outdoor unit Refer to te outdoor unit installation manual. 7.. Self-ceck (Fig. 7-) Turn on te power. Press te HK button twice. (Start tis operation from te status of remote controller display turned off.) HK begins to ligt. «00» begins to blink. Wile pointing te remote controller toward te unit s receiver, press te button. Te ceck code will be indicated by te number of times tat te buzzer sounds from te receiver section and te number of blinks of te operation lamp. 4 Press te ON/OFF button to stop te self-ceck. 8
7. Test run For description of eac ceck code, refer to te following table. eck code Symptom uzzer sound OP L P Intake sensor error Single beep Lit for sec. P Pipe sensor error Single beep Lit for sec. P4 rain sensor error Single beep 4 Lit for sec. 4 P5 rain pump error Single beep 5 Lit for sec. 5 P6 Freezing / Overeating safeguard operation Single beep 6 Lit for sec. 6 P8 Pipe temperature error Single beep 8 Lit for sec. 8 P9 TH5 sensor error Single beep Lit for sec. U0 UP Outdoor unit error ouble beep Lit for 0.4 sec. + 0.4 sec. F F Outdoor unit error ouble beep Lit for 0.4 sec. + 0.4 sec. 0 5 Signal error between remote controller and indoor units Sounds oter tan above Ligts oter tan above 6 F ommunication error between indoor and outdoor units Sounds oter tan above Ligts oter tan above No alarm istory No sound Not lit F F F F No unit Triple beep Not lit On wireless remote controller Te continuous buzzer sounds from receiving section of indoor unit. link of operation lamp On wired remote controller eck code displayed in te L. If te unit cannot be operated properly after te above test run as been performed, refer to te following table to remove te cause. Symptom H0 H0 rror code Wired remote controller isplay messages do not apper even wen operation switc is turned ON (operation lamp does not ligt up). For about utes following power-on fter about utes as expired following power-on L, (P in outdoor unit) fter L, are ligted, L is turned off, ten only L is ligted. (orrect operation) Only L is ligted. L, blink. Only L is ligted. L blinks twice, L blinks once. On te wireless remote controller wit condition above, following penomena takes place. No signals from te remote controller are accepted. OP lamp is blinking. Te buzzer makes a sort pipng sound. ause For about utes following power-on, operation of te remote controller is not possible due to system start-up. (orrect operation) onnector for te outdoor unit s protection device is not connected. Reverse or open pase wiring for te outdoor unit s power teral block (L, L, L) Incorrect wiring between indoor and outdoor units (incorrect polarity of S, S, S) Remote controller wire sort Note: Operation is not possible for about 0 seconds after cancellation of function selection. (orrect operation) For description of eac L (L,, ) provided on te indoor controller, refer to te following table. L (power for microcomputer) Indicates weter control power is supplied. Make sure tat tis L is always lit. L (power for remote controller) Indicates weter power is supplied to te remote controller. Tis L ligts only in te case of te indoor unit wic is connected to te outdoor unit refrigerant address 0. L (communication between indoor and outdoor units) Indicates state of communication between te indoor and outdoor units. Make sure tat tis L is always blinking. 9
Tis product is designed and intended for use in te residential, commercial and ligt-industrial environment. Te product at and is based on te following U regulations: Low Voltage irective 7// lectromagnetic ompatibility irective 89/ 6/ Please be sure to put te contact address/telepone number on tis manual before anding it to te customer. H OFFI: MITSUISHI NKI LG., --, MRUNOUHI, HIYO-KU, TOKYO 00-80, JPN G79U67H0 Printed in Japan