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TECHNICAL & SERVICE MANUAL Ceiling

1. C1 FAN MOTOR CAPACITOR ZNR I B VARISTOR HEATER CONNECTOR TB2 6 TERMINAL BLOCK X1 lt l B gt DRAIN PUMP D HEATER RELAY VANE MOTOR CONNECTOR LB INDOOR CONTROLLER BOARD o L POWER SUPPLY 1 PHASE GR YW QD 220240V 50Hz W eau 220V 60Hz gon o er lle 12131 w I cil ZS m gt T Dt Jl gg Sid SIE BLU e ER well OF SS Ac d AC 1 315 Wava TRANSMISSION FANI ew CND CND OUTDOOR FaN D sun e eur LED2 5V POWER ages bush UNT gem ht a Do MN BILL RD 1 1 BN S ruf TB 185 Vis A a mp SR ei j E LED1 12V POWER 1 D 3 oo SW SW3 swe 2 ZNR xi Get Be ji 7 lem D J 11375 123 12 STD 5H 3 dos Shorting fig 1 1 ot swe Sw SW pan cae m I ON 5 02 HEATER CNTRALLY 1 9 OFF E er ms Rl H B CONTROL H 1 181 L 123456 1234 1234 12345678910 55 JS a 2 OE i E LB 19 71 11213514 181 4 E 4 12 Service Ret UI 25KKHC B i L ON q ew ON m Eh 2 sun SS PLH 1 6 2 2 5KKHC with heater 123 123 a ON 1321 m CN24 swi7 RED r Rep FS H OFF 2 BLUS 8 BL _ O E NW 3 zai 87654321 POWER SUPPLY N YLW 26H 1PHASE 00 2 m 220 240V e NOTES 1 Since the indoor transformer T is connec
2. Wrong wiring Mode Thermostat Phenomenon OFF Operation stops Indoor Outdoor COOL ON 4 Way valve turns ON 9 minutes later check code P8 appears on remote controller display OFF Cooling operation Several minutes later check code P8 appears HEAT on remote controller display ON Normal operation OFF Outdoor unit stops COOL ON Operation stops 9 minutes later check code P8 appears on remote controller display OFF Operation stops HEAT Operation stops 27 minutes later check code P8 appears remote controller display OFF Outdoor unit stops Indoor Outdoor COOL 19 ON Operation stops 9 minutes later check code P8 appears on 2 2 remote controller display Ze OFF Operation stops HEAT ON Operation stops 27 minutes later check code P8 appears on remote controller display indoor Ginny OFF Outdoor unit stops 1 1 COOL i i 8 o ON peration stops 9 minutes ater check code P8 appears on 26 9 2 remote controller display 3 9 3 OFF Operation stops HEAT Operation stops 27 minutes later check code P8 appears on remote controller display fence OFF Outdoor unit stops COOL Das ON Operation stops 9 minutes later check code P8 appears on ir remote controller display ir OFF Operation stops HEAT a
3. Defrosting operation time Next defrost interval 3 minutes or below 120 minutes 3 to 7 minutes 80 minutes 7 to 10 minutes 60 minutes 10 to 15 minutes 40 minutes 15 minutes Maximum 30 minutes NOTE1 If the unit stops during defrosting the next defrost interval will be 50 minutes NOTE2 If a protection function works for the first time during defrosting the compressor will stop After a 3 minute time delay defrosting will restart In this case a 3 minute time delay is included with the defrosting time If the protection function works for the second time the unit stops operation and displays the check code The next defrost interval will be 30 mimutes NOTE3 When the defrosting has ended the total time of the compressor operation is cleard 4 Termination conditions Defrosting finishes when any of the following conditions are satisfied Defrosting has continued for 15 munites GOutdoor coil thermistor reads 22 C or above for the first 75 seconds after defrosting start up Outdoor coil thermistor reads 8 C or above after the 75 second defrosting Power ON OFF button is turned OFF during defrosting 3 6 Actuators 1 Bypass valve control Cooling mode When the unit stops due to the coil frost prevention the bypass valve turns ON When one hour ahs passed since the compressor stopped the bypass valve returns to OFF GWhen the compressor operates with the bypass valve at ON for more than 30 minutes the bypass
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5. PLH NO 3 minute NO Auxiliary heater gt NO Indoor NO thermstor is 60 C or highes FAN speed Low YES in process NO Compressor ON NO Compressor thermostat ON YES x9 Allowance cancel 3 min restart prevention 6 min restart prevention Indoor piping 15 C or lowe Hot adjust start compressor operation Allowance cancel Heating area FAN STOP Outdoor unit trouble FAN SPEED very low Compressor ON FAN SPEED Very low airflow Compressor OFF 311 Airflow area YES 20 min elapse 310 Indoor piping 55 C or lower YES NO uxiliary heater thermostat YES NO Auxiliary heater ON YES NO Indoor piping 60 C or higher Auxiliary heater ON Airflow 10 up FAN setting notch Indoor piping Low FAN SPEED setting nitch YES Auxiliary heater OFF Airflow area Heating area Outdoor unit trouble Overheat remote START Airflow area Cooling area YES Defrost operation Four way valve Y P lt NO Indoor unit 70 C or higher YES Allowance NO period YES Over
6. jeuondo Jeu Aoueroue UD jeuondo y jo 5 BY 104 2 90N 1 5 _ 1 9 Es 1 oO uonoeuuoo S z 10 Yq am M EU eui YOR S oi eins 5 5 esodund eui 10 eq e91199 3 2 VA Y E EX m ror 5 pue Wosues uee eg eoeds L a Fo T edu 5 5 jeuondo out jo uonejeisul 104 90N LH youd y0q uoisuedsng e SE oe Zn ge Sz 0127 069 56 60 ullao 2 REMOTE CONTROLLER SU Qovorr e CENTRALLY CONTROLLED 8 coo 0 pa faga maa MO op Zu uu STAND BY D amp di d D DEPPOST Gi C a ONOT AVAILABLE Deso 6 5 D Sal ZE om CHECK CADICA COO j TEMP TIMER SET TEST RUN 14 Unit mm inch SUN Dovo o CENTRALLY CONTROLLED sl Z RS en lee EDO bs 8 eal Deve ud wi S gio OO DEPPOST e a5 AVATLABLE 18 Rear side wiring arrangement opening 6 WIRING DIAGRAM PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC SYMBOL NAME SYMBOL NAME NAME R B REMOTE CONTROLLER BOARD CN2L lt I B gt LOSSNAY CONNECTOR VANE MOTOR RELAY SW17 lt R B gt ADDRES
7. Room temperature Room temperature Operation starts by becomes equal to set becomes different from Operation stops by POWER button temperature POWER button OFF set temperature i 60 minutes 60 minutes el ON i OFF quls 3 _ _ 7 60 minutes 60 minutes 60 minutes 60 minutes 60 minutes Repeats 60 minute E lt La gt gt gt ON OFF ON i OFF p ON I 10 minutes 10 minutes x 1 ON OFF ______ L 13 minutes 3 minutes E OFF 1 If compressor restarts within 10 minutes 4 way valve remains ON 39 elt 3 5 Defrosting in HEAT mode lt Defrosting time chart gt Defrosting Defrosting ON Indoor fan OFF ON 35degrees SW5 3 OFF or 20degrees SW5 3 ON airflow direction Auto vane DES Set direction Remote controller still displays set direction Set direction Outdoor unit ON 4 way valve OFF 1 ass valve OFF ON i Outdoor fan OFF ON T i Compressor i OFF 1 Start conditions A When all of the following conditions are satisfied defrosting will start However when the bypass valve turns OFF defrosting starts 10 minutes later a More than seven minutes have passed since the compres
8. Cv AR JH sec display display This displays the selected setting temperature This lamp lights when electricity is supplied to the unit Caution Only the display lights when the unit is stopped and power supplied to the unit When power is turned ON for the first time the CENTRAL CTRL display appears to go off momentarily but this is not a malfunction When the central control remote control unit which is sold separately is used the ON OFF button 14906 button and TEMP button do not operate Sail display The selected fan speed is displayed goc display The temperature of the suction air is displayed during operation The dis play range is 8 to 39 C The display flashes 8 C when the actual temper ature is less than 8 and flashes 39 C when the actual temperature is greater than 39 C peration lamp This lamp lights during operation goes off when the unit stops and flashes when amalfunction occurs FILTER Display This lamp lights when the filter need to be cleaned ispl Tra This display lights in the check mode or when a test operation is per formed NOT AVAILABLE is displayed when the button are presse This indicates that this room unit is not equipped with the fan direction adjustment function and the louver function SPECIFICATIONS Dmm 7 Ser
9. 52 eee 2 GROUP CONTROL WITH A SINGLE REMOTE CONTROLLER A maximum of 50 units can be started in order according to the dip switch settings 2 1 How to wire 1 Connect the remote controller to the double terminal block on the indoor controller board of the master unit No 0 unit See Figure 1 2 Connect the double terminal block of the master unit to the double terminal block of No 1 unit 3 Connect the double terminal block of No 1 unit to the dou ble terminal block of No 2 unit 4 Continue the process until all the units are connected with two wire cables See Figure 2 5 Remove the connector CN40 from the indoor controller board of each unit except the master unit See Figure 3 6 Set the unit address of esch unit with SW2 on the indoor controller board following the instructions below 2 2 How to set unit address The unit address also serves as a successive start timer which starts each unit at intervals of 1 second If two or more units have the same unit address in a group control operation stops due to system error Be sure to set SW2 correctly following the instructions below 1 Each lever of SW2 shows the number as follows SW2 1 1 SW2 4 8 SW2 2 2 SW2 5 16 SW2 3 4 SW2 6 32 2 Total number of levers turned to ON shows the address of the unit For example to set No 3 unit turn ON SW2 1 and SW2 2 3 In this way set from the master unit to the last unit Do not forget to
10. Ce INPUT from indoor unit Indoor controller board Receives orders from remote controller and Room temperature thermistor RT1 temperature data from indoor unit Indoor coil thermistor RT2 Processes orders and data Drain sensor Controls indoor and outdoor operation Self diagnostic function x System control operation Emergency operation X Set by dipswitch on indoor controller board OUTPUT to indoor unit Transmits the power to remote controller Autovane s angle setting Booster heater ON OFF Control Drain pump ON OFF Emergency stop Independent Control of Outdoor Unit Compressor protection device working Defrosting START STOP Fan speed control Crankcase heater control ON OFF Self diagnostic function Polar three wire cable Outdoor unit Compressor and outdoor fan ON OFF Operation mode change COOL HEAT OUTPUT to outdoor unit 21 2 INDOOR UNIT CONTROL 2 1COOL operation lt How to operate gt Press POWER ON OFF button Press the 29006 button to display Qe GPress the E TEMP button to set the desired temperature NOTE Set temperature changes 1 C when the 5 or C v D button is pressed one time Q povorr o ECK n aa co lt CETEX gah 98 c 10888 SE CENTRALLY CONTROLLER gt we
11. LOW speed LOW speed Indoor fan OFF f 30 Initally 30 degrees discharge 30 discharge Changeable by remote controller setting discharge i j position Auto vane position L minutes i Drain pump ON OFF ON Booster heater OFF AX RR DD MDC Mc a e FF o Minimum 3 minutes 1 Label Compressor 1 Even if the room temperature rise above the set temperature during this period the compressor will not start until this period has ended 1 Compressor control 3 minute time delay To prevent overload the compressor will not start within 3 minutes after stop The compressor runs when the room temperature is higher than the set temperature The compressor stops when the room temperature is equal to or lower than the set temperature The compressor stops in check mode or during protective functions 26 PT The compressor will not start when the room temperature is below 18 C The compressor starts intermittent operation when the power is turned ON with room temperature above 18 C The com pressor ON OFF time depends on the thermostat ON OFF and the following room temperatures After 3 minute compres sor operation If the room temperature thermistor reads above 28 C with thermostat ON the compressor will operate for 6 more min utes and then stop for 3 minutes If the room temperature thermistor reads 26 C 28 C with thermostat ON the compressor will operate for 4 more
12. 2 Remove the fan guard 3 Remove the rubber bushing 4 Drain the remaining water in the drain pan 5 Remove the electrical box cover 6 Remove the electrical box 7 Refmove the screw of the V A cover and remove the V A cover 8 Remove each screw of the corner supports 1 2 and 3 and remove the corner supports 1 2 and 3 9 Pull out the drain pan XPull the left and right of the pan gradually Be careful not to crack or damage the pan Photo 8 Rubber bush Screws Corner Corner support 1 Corner support 3 58 j OPERATING PROCEDURE PHOTOS amp ILLUSTRATIONS 9 10 Removing the drain pump and drain sensor Remove the panel Remove the fan guard Remove the electrical parts cover Remove the electrical parts box Remove the drain pan Remove 4 screws of the drain pump Pulling the clip of the drain hose pull out the drain hose from the drain pump 8 Remove the drain senser and the holder 9 Pull out the drain pump 1 2 3 4 5 6 7 Removing the heater for the only PLH 1 6 2 2 5KKHC 1 Remove the panel 2 Remove the fan guard 3 Remove the electrical parts cover 4 Remove the electrical parts box 5 Remove the drain pan 6 Remove the turbo fan 7 Remove the 5 screws of the hearter assembly 8 Remove the clamp 1 screw securing the lead wire 9 Pull the heater assembly out Drain sensor holder Dr
13. When AUTO operation starts after COOL or HEAT operation the previous mode continues 2 Mode change HEAT mode changes to cool mode when 15 minutes have passed since the room temperature became 2 degrees above the set temperature 9 COOL mode changes to HEAT mode when 15 minutes have passed since the room temperature became 2 degrees below the set temperature When room temperature becomes 2degrees above the set temperature the operation mode can not be changed To Set temperature 19 28 C tor 15 minutes degree degree 7 Mode change HEAT COOL To 2 2 Ca N To 1 To A s N S To 1 Z To 2 15 minutes Mode change Start SH 15 minutes COOL HEAT Minimum 3 minutes KS lt HEAT mode gt COOL mode lt HEAT mode ON e Compressor SCH t Minimum 3 minutes 3 Temperature range AUTO operation is available under the outside air temperatures as follows 9 0 10 20 30 40 46 c Outside air temperature ________________ _ _ __ 5 C 8 5 c Cooling range he gt Heating range 31 O 2 5 Auto vane control lt How to operate gt To change the air flow direction press lt button ENT Mme fiy SUI CENTRALLY CONTROLLED 60 jJ SEE ries LED J ey 88 gogg Eat CD ORO AVATUABTE NOTE Airflow direction can be
14. valve k Accumulator Restrictor 58 valve Restrictor tube valve 8 Y L1 M Br pipe SE valve ne gt Strainer 0900 SE with service port Capillary ursi X PLH 1 6 0 0 3 2 XI D 1 8 430 tube PLH 2 O D 4 0X 1 2 0 430 PLH 1 6 O D 3 2X I D 1 6 630 PLH 2 5 O D 3 2X I D 1 8 430 PLH 2 16 O D 3 2X I D 1 8 630 PLH 2 5 O D 4 2 X I D 2 4 1550 Refrigerant flow in cooling p ON Refrigerant flow in heating Cooling OFF MAIN OPERATION START ower circuit NO breaker gt gt YES YES Theck SW ON twice NO e 1 Operation SW YES ON NO OFF timer NO 7 Set time ON YES Set x2 NO Trouble YES Remote controller L A operation display STOP Trouble STOP Operating mode YES C000 PROTECTION DEVICE PROTECTION DEVICE NO COOL operation SELF HOLD RELEASE SELF HOLD YES 7 Opera ing mode Remote controller 009 indicator lamp OFF pte NO DRY operation Opera ng mode YES HEAT Indoor side NO HEAT operation 6 YES Fan STOP Operating mode i n PAN 7 FAN i Auxiliary heater OFF NO Auto COOL HEAT operation 5 1x5 Compressor OFF Four way valve OFF Outdoor side Fan STOP 1 In addition the centralized control and remote control can be operated 2 The modes which indicate
15. Line start Protection devices Inner thermostat High pressure switch Heat exchanger Plate fin coil Fan drive x No Propeller direct x 1 Fan motor output kW 0 065 Airflow m min CFM 45 1 590 Defrost method Reverse cycle Noise level dB A 49 mm in 870 34 1 4 Dimensions n n mm 11 295424 11 5 8 and 1 mm in 650 25 5 8 Weight kg Ibs 53 117 REFRIGERANT PIPING Refrigerant R 22 Charge kg Ibs 2 2 4 8 Pipe size O D Liquid 9 52 3 8 Gas mm in 15 88 5 8 Connection method Indoor side Flared Outdoor side Flared Between the indoor amp Height difference Max 40m outdoor unit Piping length Max 40m Service Ref PLH 2KKHC Function Cooling Heating 18 400 19 800 24 600 Capacity 5 400 5 800 7 200 Total input 2 34 2 32 4 09 Service Ref PLH 2KKHC Power supply phase cycle voltage Single 50Hz 220 240V Input 0 14 0 10 1 50 Running current 0 65 0 45 6 28 Starting current 0 72 0 50 6 91 External finish Galvanized sheets with gray heat insulation Heat exchanger Plate fin coil Fan drive x No Turbo fan direct x 1 Fan motor output kW 0 030 Airflow Low High m min CFM 13 16
16. NO 10 minute compressor OFF Compressor ON time set Compressor ON al x14 Fan speed LOW Y YES NO 8 9 Refer to 26 27 x12 When room temperature is 18 C or below the compressor cannot operate When room temperature rises over 18 C the compressor starts after a 3 minute time delay x13 Compressor ON time is decided by room temperature Refer to page 26 27 14 In dry operation compressor ON makes the fan speed LOW and compressor OFF stops the fan It is not possible to set the fan speed with the remote controller 20 9 MICROPROCESSOR CONTROL 1 OUTLINE OF MICROPROCESSOR CONTROL INPUT to remore controller OUTPUT to remote controller Remote controller board Processes and transmits OFF ON switching orders orders Remote controller COOL DRY AUTO HEAT selector switching LCD indicator Thermostat setting O TIMER mode selector switching and Timer setting 21 FA an HIGH LOW fan speed switching pu a lt AUTO Vane selector AIR DISCHARGE EXE ced switching TEST RUN switching k EIS So e CHECK mode switching Sle al Self diagnostic trouble shooting 8 Cv Gs Indoor unit Non polar two wire cable maxinmum length 500 meters e e Signal 12VDC lt gt e
17. Teow S z Sal ZE rum C est CHECK CA CA Era TIMER SET TEST RUN REMOTE CONTROLLER PAR BU COOL operation time chart Operation starts by POWER button ON Room temperature becomes equal to set temperature Room temperature rises above set temperature Operation stops by POWER button OFF a OFF Thermostat ON LOW or HIGH LOWorHIGH Indoor fan OFF ___ p Initally 30 degrees alii 30 Changeable by remote controller m 1 discharge discharge position Auto vane position i i 3 minutes Drain pump ON OFF i ON Booster heater OFF OFF Compressor Minimum 3minutes Si 1 Even if the room temperature rise above the set temperature during this period the compressor will not start until this period has ended 1 Compressor control 3 minute time delay To prevent overload the compressor will not start within 3 minutes after stop The compressor runs when room temperature is higher than set temperature The compressor stops when room temperature is equal to or lower than the set temperature The compressor stops in check mode or during protective functions Coil frost prevention To prevent indoor coil frost the compressor will stop when the indoor coil thermistor RT2 reads 1 C or below
18. tion See page 56 Circuit breaker E Ta Remote controller See page 54 L ON OFF control a message of CENTRALLY CON Timer adapter Unit ers is displayed on the LCD of the remote con 2 troller Eo oie This is available for both one unit control and several units switch control 3IIndividual control by By grouping the remote controllers in one place several grouping remote units installed at different locations can be controlled indi controllers 45 455 vidually and operation conditions of all units are visible See page 55 Unit Unit Unit without a special control board The control method is the same as that of the single unit with a single remote con troller Remote controller z Multiple remote Several units can be controlled with a remote control dis control display play board Operation conditions of all the units are visi See page 55 T t ble with the remote control display board Multiple display Tem 2 TES qum Individual control by each remote controller is also possi adapter ble PAC SA88HA E controll Remote is needed splay board controller A unit can be started or stopped with the circuit breaker on or off Remote controller is also available With this function when the power is restored aftar power failure the unit will restart automatically However when the remote controller POWER ON OFF button is OFF the unit will not start
19. Bad contact of transmission 2 Check with another remote controller If EO is Indoor controller does not wire still indicated replace the indoor controller respond to remote controller 2 Signal transmitting receiving cir board signal cuit is abnormal If other check code appears replace the origi nal remote controller P1 Abnormality of room temper 1 Bad contact of thermistor 1 Check the thermistor ature thermistor RT1 2 Damaged thermistor 2 Measure the resistance of the thermistor Normal resistance should be as follows 0C 15k 30 C 4 3k 10 C 9 6k 40 C 3 0k 20 C 6 3k P2 Abnormality of indoor coil If the resistance is normal replace the indoor thermistor RT2 controller board Signal transmission error 1 Bad contact of transmission 1 Check the transmission wire Remote controller does not wire 2 Check with another remote controller respond to indoor controller 2 Signal transmitting receiving cir If P3 is still indicated replace the indoor signal cuit is abnormal board 3 Wrong operation due to noise If other check code appears replace the origi wave emitted by other appli nal remote controller ances 3 Short circuit between D and of CN40 and attach CN40 to the following units Second unit in twin control Second and third units in triple control Sub units in group control P4 Abnormality of drain sensor 1 Bad contact of transmission 1 Check the connector wire 2 Mea
20. ON Operation stops 27 minutes later check P8 appears on remote controller display Disconnection between 1 and 1 or 2 OFF Operation stops COOL Das and 2 ON Operation stops 9 minutes later check code P8 appears on remote controller display OFF Operation stops 4 way valve turns OFF PEAN ON 27 minutes later check code P8 appears on remote controller display Disconnection between 3 and 3 COOL Normal operation OFF Operation stops 4 way valve turns ON HEAT ON Operation stops 27 minutes later check code P8 appears on remote controller display 49 O 7 OTHER TROUBLES AND CAUSES Vanes do not work Vane motor does not work Limit swtich does not work Connector is poorly connected Vane motor is poorly assembled Indoor controller board is damaged Unit stops after 5 to 20 seconds operation Indoor controller board deems the auto vanes are not attached to the unit Horizontal anlgle can not be detected Air discharge display is OFF and N button does not oper ate In this case remote controller is normal Power ON OFF button is not available Beep sound is heard but display is turned OFF Beep sound is not heard and display remains OFF CENTRALLY CONTROLLED is displayed Protection function is working connect Vane motor is damaged Vane motor relay is damaged Limit switch is dama
21. Room Transfomer temperature Indoor fan capacitor thermistor aluminum cap Anti falling wire Terminal block Nut Connector 4 Removing the fan motor Photo 4 Connector Fan motor Lead wire for Clamp Screws Transformer Indoor controller board Capacitor 57 OPERATING PROCEDURE PHOTOS amp ILLUSTRATIONS Removing the room temperature thermistor 1 Remove the fan guard 2 Remove the electrical box cover 3 Remove the holder and the room temperature thermistor by pulling the catch 4 Disconnect the red connector CN20 on the indoor con Photo 5 Indoor controller board Remove the fan guard Remove the electrical box cover Remove the electrical box Remove the turbo fan Remove the screw of the service panel Remove the service panel Remove the indoor coil thermistor from the holder attached to the copper pipe 8 Disconnect the 2 pin white connector R 1 2 3 4 5 6 7 troller board Room temparature thermistor 6 Removing the indoor coil thermistor Photo 6 Indoor coil thermistor Mounting hole 7 Removing the panel 1 Open the intake grill 2 Disconnect the connector the vane motor 3 Remove 4 screws of the panel 4 Pulling the temporary handing hook remove the panel Photo 7 Temporary hanging hook Screws Screws Fan guard Temporary hanging hook Removing the drain pan 1 Remove the panel
22. 0 86 4 Condensing temperature 48 5 50 7 Refrigetrant circuit Suction temperature C 8 5 0 7 4 8 1 8 Ref pipe length m 5 5 5 5 27 20 27 20 19 15 19 15 Intake air temperature Indoor side Discharge air temperature Intake air temperature Outdoor side SHF BF The unit of pressure has been changed to Mpa based on international SI system The conversion factor is 1 Mpa G 10 2 kgf cm G 4 OUTLET AIR SPEED AND COVERAGE RANGE PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC Air flow 16 0 16 0 17 0 Air speed 5 6 5 6 5 9 Coverage range 6 0 6 0 6 4 Air flow 17 0 17 0 18 0 Air speed 5 9 5 9 6 3 Coverage range 6 4 6 4 6 8 Total width of discharge outlets 0 0 0 The air coverage range is the value up to the position where the air speed is 0 25m sec When air is blown out horizontally from the unit at the Hi notch position The coverage range should be used only as a general guideline since it varies according to the size of the room and the furniture inside the room High ceiling Standard OUTLINES AND DIMENSIONS 13 E 092 Lengt jepno ou E s 097 gt apis Bulsojo auf exei aye IU 997 jejno 09 48 G 4 48 g 4 88 21 edid juejeDujeH za 6 edid 9 2 911
23. 5 400 5 800 18 400 19 800 PLH 2 5KKHC 6 300 7 200 21 500 24 600 1 PURSUING CONPACTNESS 1 Panel size and body volume reduced to 64 of previous models The width and depth of the panel have been reduced by 19cm respectively resulting in a compact model which fits small er environments like shops perfectly 2 Multi application panels flexibly adapt to installation conditions Space panel and Wide panel may be installed on ceilings with shallow depth using the exiting opening 2 SMUDGE FREE PRECISELY TARGETED AIRFLOW SYSTEM The new control system regulates airflow to prevent smudging A projection inside the air passage distributes air evenly over the top and bottom of the vane Two projections on the air outlet work to prevent cooled air from rising to the celling and also to stop outside air being dragged into the cooled air stream 3 AIRFLOW ADJUSTABLE TO ANY INDOOR ENVIRONMENT Airflow can be adjusted according to celling height and the number of air outlets Wide Zoming Flow creates anopti mum airflow for any indoor environment 4 A FURTHER REFINEMENT OF COMFORT WITH NOISE SUPPRESION The celling 4 way airflow cassette has a special silent design The 2 Tap system allows a choice between silent and standard modes according to the height of the cellig For ordinary residenced which have a low celling selection of the silent mode will result in remarkable noise reductions 5 ECONOMICAL AND EASY MAINTENANCE 1 Push open grill
24. DEPOST EZ eelere TESTAN AVAILABLE 6 6 5 T C SC S AC est CHECK CSC ser grum CZ TEST RUN Timer setting example gt lt Timer function gt AUTO STOP The air conditioner stops after the set time lapses AUTO START ees The air conditioner starts after the set time lapses TIMER OFF Timer is not active How to operate 1 Press POWER ON OFF button 2 Press O button to select AUTO STOP or AUTO START CLOCK ON OFF 3 Press button to set desired time Time setting is in 1 hour units for up to 24 hours Each time HOURS button is pressed set time increases by 1 hour When HOURS button is pressed and held the set time increases by 1 hour every 0 5 seconds 4 To cancel the timer operation press POWER ON OFF button This setting will stop the air conditioner in 8 hours With the lapse of time time display changes in 1 hour units showing remaining time 2 7 Test run Before test run After installing wiring and piping the indoor and outdoor units check for refrigerant leakage looseness in power supply or contorol wiring and mistaken polarity Use a 500 volt megger to check the resistance between the power supply terminal block and ground to make sure that it is at least 1 0M Attention Do not use the air condition
25. Filter clogging is widely recognized as a cause of reduced perfomance but up until now it has been troublesome to clean filters With the push open grill the fillter can be smoothly opened out at the push of a button enabling speedy cleaning 2 An unprecedented level of vane cleaning The unique airflow system prevents the intake of indoor air Dewing therefore does not occur and the vane is flockless The resulting level of dirt on the vane due to tobacco smoke dust etc is very light and can be wiped off easily with a neutral detergent 3 Long life fillter This new celling 4 way airflow cassette employs a long life fillter which requires no maintenance for up to 2 500 hours of operation in general office environments It adds uo to an ideal blend of comfort and low maintenance Oo O 6 COMPACT DIMENSIONS MEAN EASY INSTALLATION 1 Carefree suspension work with lightweight unit The new unit weighs in at 20kg 9kg lighter than the previous model and is easy to handle and install What s more sus pension work is facillitated by compact dimensions ensuring a snug fit 2 Smooth installation with one direction bolts Suspension bolts can be fixes consistently from one direction easing suspension work 3 Trouble free fitting work with slender refrigerant piping Refrigerant piping has been reduced in size and pipe curving work at the installation site can now be completed quickly and economically In addition refrigerant and drain pi
26. after the compressor has been continuously operated for at least 16 minutes or more When the indoor coil temperature rises to 10 C or above the compressor will start after a 3 minute time delay NOTE By turning OFF the dipswitch SW1 5 on indoor controller board the start temperature of coil frost prevention changes from 1 C to 3 C 22 Oo Coil frost protection When indoor coil temperatuer becomes 15 C or below coil frost protection will proceed as follows lt Start condition gt After the compressor has been continuously operated for 3 minutes or more and the indoor coil temperature has been 15 or below for 3 minutes the coil frost protection will start lt Coil frost protection gt Compressor stops for 6 minutes and then restarts If the start condition is satisfied again during the first 10 minutes of compressor operation both the indoor and outdoor units stop displaying a check code 8 the remote controller lt Termination conditions gt Coil frost protection is released when the start condition is not satisfied again during the allowance or when the COOL mode stops or changes to another mode 2 Indoor fan control Indoor fan speed LOW HIGH depends on the remote controller setting However if an outdoor unit abnormality is detected the indoor fan speed will be LOW regardless of the remote controller setting When the outdoor unit abnormality detection is released and the fan speed returns t
27. ef the temperature difference does not return to RANGE B the outdoor unit is deemed abnormal the temperature difference returns to RANGE B the next 20 minutes is an allowance period If the difference enter RANGE A during the allowance defrosting ends and the hot adjustment starts If the difference does not enter RANGE A during the allowance the outdoor unit is deemed abnormal GDuring compressor ON in hot adjustment After 30 minutes of defrosting in hot adjustment if the temperature difference is still in RANGE C the outdoor unit is determined to be abnormal amp During compressor OFF After 20 minutes of thermostat OFF if the indoor coil thermistor reads 25 C or below the outdoor unit is determined to be abnormal 6 Indoor coil thermistor abnormality detection An abnormality can be detected during compressor ON except for the following For the first 30 minutes after the temperature difference between the indoor coil temperature and room temperature enters the RANGE C See the below figure 1 Ge When the temperature difference enters the RANGE C until it moves to the RANGE B 7 Defrosting operation 30 After the outdoor unit starts the defrosting operation when the temperature difference beetween the indoor coil tempera ture and room temperature gets out of RANGE A and into RANGE B the indoor unit starts the defrosting mode After the outdoor unit stops the defrosting operation when the temperature difference r
28. for remote indication operation check Part No PAC SA88HA E BRN RED ORN YLW GRN Q O N 5 CENTRALIZED REMOTE CONTROLLER Allows individual or combined control of up to 16 units When using the PAC 805RC the program timer adapter PAC 825AD is also needed See page 68 Part No PAC 805RC 5 1 Dimensions is ENGAGED YAHEAD GROUP SELECTION ABACK PROGRAM ACTIVE S TIMER B PASS CONTROLLER OPERATION DUAL CENTRAL DUAL CENTRAL J M MITSUBISHI ELECTRIC 5 2 Functions ENGAGED indicator When this indicator is lit transmission is in progress and all switches are inoperative 113 ENGAGED nn croup D I 12345678910 GROUP SEL ACTIVE BYPASS DUAL CENTRAL POWER ONOFF A BACK PROGRAM TIMER ACTIVE BYPASS CONTROLLER DUAL OPERATION _ CENTRAL 10987654321 Unit mm POWER ON OFF switch Operation ON OFF switch ABACK WAHEAD buttons switch This change over switch governing the operation of the accessory remote con troller DUAL Instructions from both the accessory remote controller and the centralized re
29. is con trolled by optional features such as central control type remote controller display This indicates when the continous operation and time operation modes are set It also display the time for the timer operation at the same time as when it is set OPERATION MODE display ON OFF e The current time start time and stop time can be displayed in tensecond intervals by pressing the time switch button The start time or stop time is always displayed during the timer operation display In this display example on the bottom left a condi tion where all display lamps light is shown for explanation purposes although this differs from actual operation display This displays the air direction This indicates the operation mode STANDBY display This indicates when the standby mode is set from the time the sleep operation starts until the heating air is discharged DEFROST display ation is performed This indicates when the defrost oper CHECK display This indicates when a malfunction has occurred in the unit which should be checked CONTROLLED Z D T lt Aue CED CH OF oD ER Jam E e 0680 r EE k IN RE 6 5 5 Sai S om See CHECK Eau TMER SET TEST RUN
30. on off mode of SW1 and SW2 Remote controller Timer adapter cables 3 3 Switch function of remote ON OFF switch SW2 Switches between remote ON OFF and individual control ON OFF Remote ON OFF control Individual control ON All units start together 1 2 Start Individual control is not available Each unit can be controlled by each Switches between OFF All units start toaeth remote controller remote ON and OFF UNS Start togerer x2 Remote ON OFF switch is not available Stop Individual control is not available 1After all units start together if SW2 is turned OFF each unit can be individually stopped by each remote controller 2After all units stop together if SW2 is turned OFF each unit can be individually started by each remote controller 54 pT 4 INDIVIDUAL CONTROL BY GROUPING THE REMOTE CONTROLLERS Grouping the remote controllers allows individual control and cen tralized monitoring of units installed in different places without a special control board Remote control cables are extendable up to 500m When the cable length exceeds 12m use the double insulated two care cable such as Belden 9407 Also the cable thickness must be No 22 AWG or above When gathering the power ON OFF switches of air conditioners near the remote controllers you should also install the power ON OFF switch near each unit to prevent electric trouble during ser vicing 5 MULTIPL
31. set the master No 0 unit Setting examples Figure 1 x To remote controller Master unit electrical box To next unit Next unit electrical box does not have this wire To next unit A Figure 2 E J HEX BE EM No 2 unit Last unit unit Master No 1 unit Use 2 wire cable Figure 3 Indoor controller board W Should be removed from all units other than unit 0 Master Unit Master 0 unit 1 unit No 2 unit SW2 No 4 unit No 8 unit No 16 unit No 32 unit Unit address amp start delay in seconds 2 3 Unit control The remote controller can control all units ON OFF temperature air flow and swing louver However the thermostat in each unit turns ON or OFF individually to adijust to the room temperature 53 a ss 3 REMOTE ON OFF AND INDIVIDUAL REMOTE CONTROLS This method is available to control one unit or any number of units The following operations are available by connecting a relay a timer adapter PAC SA89TA E and a remote ON OFF switch to the system Timer adapter is an optional part Other parts are available on the market A To start all units in order by remote ON OFF switch B To stop all units simultaneously by remote ON OFF switch C To switch between t
32. setting 1 On remote controller board 1 SW17 Address selector 12345678 ON OFF SW17 1 6 For address setting SW17 7 When two remote controllers are used this switch sets the controller function OFF The remote controller is set as a main controller ON The remote controller is set as a sub controller SW17 8 Switch for system back up OFF Without back up ON With back up 1 SW18 Function selector 1234 ON OFF SW18 1 Switch for timer OFF Single day ON timer every day SW18 2 Switch for filter sign OFF filter sign adsent ON filter sign present SW18 3 Switch for filter sign time setting OFF 100Hr ON 2500Hr SW18 4 Not yet used 2 On indoor controller board 1 SW1 Mode selector 1234567890 ON OFF SW1 1 SW1 2 SW1 3 SW1 4 SW1 5 SW1 6 SW1 7 SW1 8 SW1 9 36 Switch that changes between FAN mode and AUTO mode OFF Fan mode for models without heat pump ON AUTO mode for models with heat pump Switch for auto vanes OFF Unit without auto vanes ON Unit with auto vanes Switch for drain pump OFF The drain pump works in only COOL operation ON The drain pump works in both COOL and HEAT operation Switch to change the temperature to start coil frost prevention OFF 3 C For previous special models ON 1 C For all current models Switch for set temperature adjustment in HEAT mode During HEAT operation warm air collects near the ceiling When the indoo
33. the 10 minute detection the vane motor will turn OFF 4 Detecting abnormalities in the outdoor unit After the compressor has been continuously operated for 3 minutes if the difference between the indoor coil temperature and room temperature is out of RANGE C for 1 minute the indoor fan speed will turn to LOW Five minutes later if the dif ference is still out of RANGE C the outdoor unit is functioning abnormally Thus the compressor stops and check code P8 appears on remote controler RANGE A Indoor coil temperature is more than 5 degrees above room temperature RANGE B Indoor coil temperature is within 5 degrees either way of room temperature RANGE C Indoor coil temperature is more than 5 degrees below room tempetature Indoor coil temperature minus room temperature degree RANGE A e EC 0 RANGE B RANGE C 5 Drain pump control The drain pump works in COOL or DRY operation When operation stops or changes to HEAT mode the drain pump con tinues to operate for 3 more minutes The drain pump does not work in check mode lt Drain sensor gt When both the drain pump and unit are operating the drain sensor detects the temperature This temperature tells whether the drain water level is above or under the drain sensor If the drain water level rises above the drain sensor due to a drain pump malfunction the unit will stop operating in order to prevent drain from overflowing The check code P5 on the remote controller
34. valve turns OFF When the compressor stops with the bypass valve at OFF the bypass valve turns ON and remains ON for three min utes Heating mode When the unit starts for the first time after the circuit breaker has been turned ON or when it starts after the compressor OFF of 30 minutes or more if the outdoor coil thermistor reads 12 C or more the bypass valve turns ON GWhen the high pressure switch 63H1 works the bypass valve turns ON When the bypass has been ON for 30 minutes If the high pressure switch has already returned the bypass valve turns to OFF If not the fan output step keeps 70 for three minutes Meanwhile if the high pressure switch returns the bypass valve turns OFF Otherwise the normal fan control starts When the operation mode changes or stops the bypass valve turns ON and remains ON for three minutes lt Defrosting operation gt The bypass valve is OFF 2 Crankcase heater control With jumper wire J3 The crankcase heater is ON from when the power is turned ON until the compressor starts and then turns ON one hour after the compressor stops Without jumper wire J3 The crankcase heater is ON from when the power is turned ON until the compressor starts and repeats 1 hour ON and 1 hour OFF 41 O 3 7 Service functions 1 Compulsory defrositng When all of the following conditions are satisfied pressing SW2 starts the compulsory defrosting During HEAT mode The comp
35. 2V DC with rated coil power 2wires No 1 unit No 2 unit No 3 unit motion below 0 9W pr SCH Ge sumption belo gt lt I T Lamps Matching to power supply voltage PS Remote Relay box __ ooo controller Field supply cable Muitiple remote control L ON OFF display Remote Remote Remote Field supply controller controller controller Operation check lt Wiring diagram gt sig Multiple remote Power Set controller adapter o 1 supply i T T x2 5 No 1 unit 4 GRE i 2 RES 2s 4 No 2 unit No 3 unit connect to the connector CN51 Multiple Remote Control Display Relay box 55 56 O 6 AUTO RESTART FUNCTION By setting the dipswitch SW1 10 to ON the air conditioner can be started stopped by power supply ON OFF If the air conditioner is OFF before the power failure it will not start operation by power restore lt Wiring gt A an optional timer adapter a single throw switch A B ae Brown Red Red Orange Remote controller 9 Remote controller For remote control connect the optional timer adapter PAC SA89TA E 1 INDOOR UNIT 13 DISASSEMBLY PROCEDURE Be careful on removing heavy parts 2 Open the
36. 45 ee 3 SERVICE DATA INDICATION BY SWITCHES ON OUTDOOR CONTROLLER BOARD Setting dip switchs SW2 and SW3 on the outdoor controller board enables LED to show the output state and check code Output state is shown by LED lighting and check code by blinking SW1 Turning SW1 ON clears the check code If SW1 is turned ON while the check code is blinking the indication changes to output state indication NOTE SW1 is usually available independant of SW3 setting As an exception when the check code shows a reversed phase or an open phase during the power on reset state SW1 is not available SW is turned ON by pressing and OFF by releasing When SW3 1 and SW3 2 are OFF pressing SW2 changes indication between output state and check code alternate ly When SW2 is turned On with SW3 1 OFF and SW3 2 ON the compulsory defrosting starts SW3 Output state indication items depend on the combination of SW3 1 ON OFF and SW3 2 ON OFF SW2 ed alternately by pressing SW2 Check code Output state Outdoor coil temperature bit Fan outpuit step bit Total time of compressor operation Hr OFF OFF OFF ON ON OFF OFF ON OFF ON Blinking Lighting Compressor ON command 1 from indoor controller Heating operation command 2 from indoor controller During 63H1 function 4 Reversed phase Open phase Outdoor coil thermistor is abnormal 63H2 function Compr
37. 460 565 External static pressure mmAq Pa O direct blow Booster heater 1 4 Operation control amp Thermostat Remote controller amp built in INDOOR UNIT Noise level Low High 32 37 Cond drain conn O D UNIT 660 26 32 1 1 4 UNIT 660 26 PANEL 760 30 PANEL 760 30 Dimensions D H UNIT 253 10 4 UNIT 19 42 20 44 PANEL 30 1 1 8 Weight PANEL 3 7 8 3 7 8 Service Ref PUH 2VKA2 Power supply phase cycle voltage 2 20 Single 50Hz 220 240V Input 9 86 2 22 Running current 45 9 95 Starting current 45 External finish Munsell 5Y 7 1 Refrigerant control Capillary tube Compressor Hermetic Model NH38VMD Motor output 1 7 Starter type Line start Protection devices Inner thermostat HP switch OUTDOOR UNIT Heat exchanger Plate fin coil Fan drive x No Propeller direct x 1 Fan motor output kW 0 065 Airflow m min CFM 45 1590 Defrost method Reverse cycle Noise level dB A 49 mm in 870 34 1 4 Dimensions mm in 295 24 11 5 8 add 1 mm in 650 25 5 8 Weight kg 105 64 141 Refrigerant R 22 Charge kg 105 2 2 4 8 9 52 3 8 Liquid mm in Pipe size O D Gas mm in 15 88 5 8 Indoor side
38. 5RS E LGH 80RS E LGH 35RS E LGH 100RS E 3 Reqired parts are Relay box PZ 12RB E Contact capacity 10A Remote display adapter PAC SA88HA E An optional part for Mr SLIM LOSSNAY control switch PZ 05SLB2 E For LOSSNAY individual operation 4 Operation LOSSNAY turns ON OFF according to Mr SLIM ON OFF While Mr SLIM is OFF LOSSNAY individual operation is available by using the LOSSNAY control switch When Mr SLIM turns OFF with the LOSSNAY control switch at ON LOSSNAY will continue to operate 5 Wiring When the LOSSNAY control switch is used When the LOSSNAY control switch is not used Mr SLIM f e Mr SEM Relay box or e Indoor controller 220 240V AC PZ 12RB E _ LOSSNAY board I Terminal block f Terminal block Remote controlen NENNEN Connector Insulation is needed Relay box PZ 12RB E 10m Circuit breaker oil m Connecting wire 0 13mm or over 1 1 1 1 220 240V oH J 7 Power supply Connecting wire solid wire 1 6 or 62 0 field supplied Circuit breaker field supplied Power OL SC LOSSNAY 0 240V Terminal I I I J NOTE For further information refer to the LOSSNAY technical amp service manual LOSSNAY control switch PZ 05SLB 2 E Junction box field supplied 35 O 2 10 Dip switch functions Each figure shows the initial factory
39. 6KKHC 44 PLH 2KKHC 52 PLH 2 5KKHC Service Ref Outdoor unit PUH 1 6VKA2 PUH 2VKA2 PUH 2 5VKA2 Mode Cool Heat Cool Heat Cool Heat Capacity W 4 400 2 650 5 400 27800 6 300 7 200 Total Input kW 1 59 2 34 2 60 Input kW 0 15 0 14 0 14 Current A 0 64 0 65 0 67 Starting current A 0 70 0 72 0 67 Input kW 1 44 2 20 2 46 Current A 6 74 9 86 10 68 5 5 5 Starting current 33 45 52 11 3 STANDARD OPERATION DATA Service Ref PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC Mode Cooling Heating Cooling Heating Cooling Heating Capacity 4 400 4 650 5 400 5800 6 300 7 200 Input 1 59 1 51 2 34 2 32 2 60 2 33 Indoor unit Service Ref PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC Phase Hz 1 50 1 50 1 50 Volts V 240 240 Amperes A 0 64 0 45 0 65 0 45 0 45 Outdoor unit Service Ref PUH 1 6VKA2 PUH 2VKA2 PUH 2 5VKA2 Electrical circuit Phase Hz 1 50 1 50 1 50 Volts V 240 240 240 Amperes A 6 74 6 60 9 86 9 95 9 78 Mpa G 1 80 1 70 1 90 1 94 1 71 Discharge pressure kay 189 17 3 19 3 19 8 XS 17 4 Mpa G 0 54 0 40 0 46 0 34 5 0 36 Suction pressure kgf mG 5 5 4 1 4 7 3 5 3 7 Discahrge temperature G 78 7 77 2 84
40. 8 1 Compressor control D3 minute time delay To prevent overload the compressor will not start within 3 minutes after stop The compressor runs when the room temperature is lower than the set temperature The compressor stops when the room temperature is equal to or higher than the set temperature The compressor stops in check mode or during protective functions Overheat protection lt Start condition gt When the indoor coil thermistor reads 70 C or above the overheat protection will start lt Overheat protection gt The compressor stops for 6 minutes and then restarts If the start condition is satisfied again within 10 minutes of compressor operation both the indoor and outdoor units stop displaying a check code of P6 on the remote controller lt Termination conditions gt Overheat protection is terminated when the start condition is not satisfied again during the allowance 10 minute compres sor operation when operation mode changes to other mode or when thermostat turns OFF 2 Indoor fan control a Normal control i The indoor fan runs on EXTRA LOW speed during the thermostat OFF EXTRA LOW speed can be changed to LOW or HIGH speed by setting the dipswitch SW1 7 and SW1 8 If the indoor coil temperature becomes more than 5 degrees below the room temperature during the thermostat OFF the indoor fan will stop After when the indoor coil temperature becomes within 5 degrees of room temperature the indoor
41. ADVANCED AND EVER ADVANCING MITSUBISHI ELECT RIC MITSUBISHI ELECTRIC 1 997 SPLIT TYPE HEAT PUMP AIR CONDITIONERS No OC123 TECHNICAL amp SERVICE MANUAL Ser les PLH Ceiling Cassettes This manual does not cover the following outdoor units When servicing them please refer to the Indoor unit service manual No OC128 and Model names this manual in a set PLH 1 6KKHC PUH 1 6VKA2 PUH 2VKA2 PL H 2 KKHC PUH 2 5VKA2 PLH 2 5KKHC Service Ref PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC CONTENTS TE EA DURES 2 2 PART NAMES AND FUNCTIONS 3 3 SPECIFICATIONS 6 T eee 9 5 OUTLINES AND DIMENSIONS 13 6 WIRING DIAGRAN 15 7 REFRIGERANT SYSTEM DIAGRAM 16 8 OPERATION FLOW CHART 17 9 MICROPROCESSOR CONTROL 21 10 TROUBLESHOOTING 43 11 4 WAY AIR FLOW SYSTEN 51 12 SYSTEM CONTROL 52 13 DISASSEMBLY PROCEDURE 57 14 PARTS LIST menm 60 15 OPTIONAL PARTS 64 The Slim Line REMOTE CONTROLLER From Mitsubishi Electric Mi SUM 1 FEATURES Series Ceiling Cassettes Indoor unit Remote controller Service Ref Cooling capacity Heating capacit Btu h PLH 1 6KKHC 4 400 4 650 15 000 15 900 PLH 2KKHC
42. C 2 ELECTRICAL DATA Indoor unit 220V 50Hz 1phase Outdoor unit 220V 50Hz 1phase Indoor unit PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC Service Ref Outdoor unit PUH 1 6VKA PUH 2VKA2 PUH 2 5VKA2 Mode Cool Heat Cool Heat Cool Heat Capacity W 4 300 4 550 5 300 27400 6 200 Total Input kW 1 48 2 24 2 53 Input kW 0 12 0 12 0 12 Current A 0 60 0 61 0 57 Starting current A 0 66 0 67 0 63 Input kW 1 36 2 12 2 41 Current A 6 79 9 83 11 18 Outdoor unit Indoor unit Starting current A 30 Indoor unit 230V 50Hz 1phase Outdoor unit 230V 50Hz 1phase In Service Ref r unit utdoor unit PLH 1 6KKHC PUH 1 6VKA 43 PUH 2VKA2 52 PLH 2KKHC PLH 2 LH 2 5KKH PUH 2 5VKA2 Mode Cool Heat Cool Heat Cool Heat Capacity W 4 600 5 350 5 750 6 250 2 020 Total Input KW 4 350 5 890 1 45 1 54 3 01 2 29 2 57 Input kW 0 14 0 13 0 13 Current A 0 62 0 63 0 59 Starting current A 0 68 0 69 0 65 Input kW 1 40 2 16 2 44 Current A 6 76 9 78 10 94 Outdoor unit Indoor unit Starting current A 32 Indoor unit 240V 50Hz 1phase Outdoor unit 240V 50Hz 1phase Indoor unit PLH 1
43. CURRENT TIME DISPLAY SET BACK DISPLAY Used for selection of if or not the day opera tion pattern set by PATTERN SETTING is to be applied in weekly day unit setting During MONITOR status current time is display During Daily timer setting a time desire for timer setting is Indicates the setting set back range DAILY TIMER SETTING DISPLAY 24 hours is divided into 48 blocks and each block express 30 minutes The block display consists of 3 pattern displayed SET MONITOR DISPLAY During SET is display clock adjustment change of weekly day daily and weekly timer setting can be performed During MONITOR is display all switches A MITSUBISHI ELECTRIC SET E MONITOR H B vv KOR iols L LT EEKL WEEKLY DAILY SETMONITOR TODAY SETTING ser BACK ON SETTING Set back can be done in the range of 1 2 4 6 and 8 C SET BACK SETTING SW Used for set back setting ON SET BACK OFF SW e t SET MONITOR SW invalidated This S normal status oN ox Sen ESCH i gt Used to specify the time setting pattern estar MACHO c WEEK DAY SETTING SW
44. Cooling area YES 10 minute NO compressor operation YES Allowance cancel FAN speed LOW Coilfrost YES protection FAN speed YES NO tows min 16 minute Wa coi NO Slaps NO compressor operation M e is NO Dag Outdoor unit YES YES trouble Indoor pipe YES 3 minute temperature is time delay 1 or lower NO Coil frost Coil frost prevention prevention release Compressor Compressor OFF la v v O x8 When operation stops or changes to cooling or dry mode the auto vane tums to a horizontal angle If operation changes during auto vane SWING the auto vane will continue to swing 9 When operating TEST RUN the thermostat will be continuously ON 10 After 3 minute compressor operation if the indoor coil thermistor reads 15 C or below for 3 minutes the compressor will stop for 6 minutes x11 Cooling area Indoor coil temperature is more than 5 degrees above the room temperature Heating area Indoor coil temperature is more than 5 degrees below the room temperature FAN area Indoor coil temperature is within 5 degrees either way of the room temperature 18 HEATING OPERATION Heat operation YES Vane setting notch Vane intial setting YES Heating area Defrost release Defrost 30 min elaspe YES Defrosting NO Four way valve ON Hor adjust YES Outdoor unit trouble
45. E REMOTE CONTROL DISPLAY You can control serveral units with a multiple remote control display by wiring an optional multipe display adapter PAC SA88HA E with relays and lamps on the market 5 1 How to wire 1 Connect the multipe display adapter to the connector CN51 on the indoor controller board 2 Wire three of the five wires from the multiple display adapter as shown in the figure below Remote control er cable Remote controller Indoor controller boardV lt Wiring gt son 5 GREEN de n c9 EE CN51 YELLOW excea sen es GL Power X NE Supply connector 5P RED 7 DET BROWN Electrical insulation is needed Optional multiple display Wiring at the actual place adapter The maximum distance between indoor board and relay is 10m Notes on Signs lt System gt X1 Relay for check lamp Power 3wires X2 Relay for operation lamp supply 3wires RL Check Lamp 3wires GL Operation Lamp Field supplied parts Relays 1
46. Flared Connection method Outdoor side Flared Between the indoor amp Height difference Max 40m REFRIGERANT PIPING outdoor unit Piping length Max 40m Dm Service Ref PLH 2 5KKHC Function Cooling Heating 21 500 24 600 31 700 Capacity 6 300 7 200 9 300 Total input 2 60 2 33 4 87 Service Ref PLH 2 5KKHC Power supply phase cycle voltage Single 50Hz 220 240V Input 0 14 0 10 2 20 Running current 0 61 0 45 9 20 Starting current 0 67 0 50 10 12 External finish Galvanized sheets with gray heat insulation Heat exchanger Plate fin coil Fan drive x No Turbo fan direct x 1 Fan motor output kW 0 030 Airflow Low High m min CFM 14 17 495 600 External static pressure O direct blow Booster heater 2 1 Operation control amp Thermostat Remote controller amp built in INDOOR UNIT Noise level Low High 35 39 5 Cond drain conn O D 32 1 1 4 UNIT 660 26 PANEL 760 30 Dimensions PANEL 760 30 UNIT 660 26 PANEL 30 1 1 8 Weight UNIT 253 10 4 UNIT 20 44 21 46 PANEL 3 7 8 3 7 8 PUH 2 5VKA2 Service Ref Single 50Hz 220 240V Power supply phase cycle voltag 2 46 2 23 Input 10 68 9 78 Running current 52 52 Startin
47. L DAILY TIMER SW Used for week day setting geg Used for timer setting in 30 minutes unit MODE SELECTOR SW CLOCK ADJUSTMENT SW WEEKLY TIMER SW Using this switch select MONITOR or SET Mode Used for adjustment of the current time Used for setting timer in day of week unit MONITOR Indicates the current timer set ting All switch expect MODE SELECTOR SW are invalidated then This is the normal status SET Set to SET mode for clock adjust ment charge of week day daily and weekly timer setting 3 TIMER ADAPTER Push c SW to advance the time Each time the button is pushed the time advance by 1 minute pushing continuously advances by 1 minute at 0 5 second interval and when the lower digit of minute decomes 0 indication advances in 10 min utes unit co SW is used for reversing the time Each time the button is pushed the time reverses by 1 minute pushing continuously reverses the time by 1 minute at 0 5 second interval and when the lower digit of minute decomes 0 indication reverses in 10 minutes unit Pushing a gt SW moves the week day light display in order of SoM T W enabling to set the week day This adapter is needed for system control and for operation via external contacts Adapter connection is described on page 54 Part No PAC SA89TA E ORN BRN SEN ae 65 4 MULTIPLE REMOTE CONTROLLER ADAPTER This adapter is needed
48. Note 1 How to connect refrigerant pipes Indoor unit Flared Outdoor unit Flared Factory supplied optional refrigerant pipings contain refrigerant at the above atmospheric pressures As long as the connection takes no more than 5 minutes no air will enter and there will be no need for air purging Remove the blind caps and make the connections within 5 minutes After the connections for the indoor and outdoor units are made open the stop valve on the outdoor unit to allow refrigerant gas to flow If piping length exceeds 5m an additional charge of refrigerant in needed Note 2 The following main parts are cntained in the optional refrigerant piping kit Heat insulating cover vinyl tapes nipples sleeve and flange for wall hole connecting cables 2 TIMER Part No PAC SC32PT with set back function Model Name 2 1 Program timer specifications Part name Program timer Program timer Parts No PAC SC32PTA Exterior dimensions inch 5 4 32X4 23 32X23 32 130120X18mm Installation Wall mount Type of clock Quartz Clock accuracy 50 second month at 25 C Display Time Week Timer setting unit Liquid crystal display Liquid crystal display Liquid crystal display Program cycle 24 hours Timer setting unit 30 minutes No of set points 48 day Power rating 2 2 Feature of program timer 1 Daily timer function 5V DC 5 Supplyed by Rem
49. O 1 SW6 2 OFF ON Twin NO 2 ON Triple NO 2 SW6 3 OFF OFF ON Triple NO 3 SW6 4 OFF OFF ON 6 SW7 Model selector Switch to set the output of phase controlled indoor fan motor Address setting is available at any time The initial factory setting by is based on each capacity PLH 1 6KKHC Service Ref PLH 2KKHC PLH 2 5KKHC ON ON SW7 OFF OFF 123 123 7 SWA High ceiling noise saving selector Ceiling height amp airflow direction Unit m High ceiling SWB Standard High ceiling OO High ceiling Standard 4 direction airflow 2 4 27 3 0 3 direction airflow 2 7 3 0 3 3 8 SWB Air outlet number selector 9 SWC Option selector Option 2 Not used 3 3 direction airflow 4 4 direction airflow u Standard Standard When mounting the optional high efficiency filter set this switch to option 37 O 2 11 INDOOR FAN CONTROL 1 Fan motor max rotational frequency for PLH KKHC Voltage 100 rotational frequency rpm V 50Hz 220 586 PLH 1 6KKHC 230 608 240 629 220 586 PLH 2KKHC 230 608 240 629 220 611 PLH 2 5KKHC 230 634 240 657 Service Ref 2 Indoor fan relay output a During fan ON The indoor fan relay turns ON One second later the phase control will start b During fan OFF The phase con
50. OCKET T7W E00 355 DRAIN PUMP R01 W28 266 DRAIN SENSOR R01 W28 527 DRAIN HOSE sch sch sch sch 1 EA T7W E00 480 HEAT EXCHANGER sch sch sch sch sch R01 E01 480 HEAT EXCHANGER R01 E02 480 HEAT EXCHANGER R01 E00 529 DRAIN PAN CORNER COVER BG00T713G05 COVER DRAM BG00T712G06 T7W 521 716 TERMINAL BLOCK 3P L N G T7W 517 716 TERMINAL BLOCK 3P 1 2 3 T7W 515 716 TERMINAL BLOCK 2P 1 2 R01 29H 255 CAPACITOR 2 5uF 400V CONTROLLER CASE BG25J542H04 T7W 58K 310 INDOOR CONTROLLER BOARD T7W 520 239 FUSE 250V 6 3A T7W 580 799 TRANSFORMER R01 J07 202 ROOM TEMPERATURE THERMISTOR BELL MOUTH BG00L601G22 ELECTRICAL PARTS COVER BG00A662G18 R01 71G 215 RELAY LY2F DC12V T7W 29H 675 FAN GUARD R01 08K 097 SPL WASHER R01 A48 524 DRAIN PLUG R01 71N 241 SENSOR HOLDER R01 20J 303 INSULATOR sch 1 sch 1 sch 1 sch 1 sch 1 sch 1 sch 1 sch 1 ech 1 ech 1 sch 1 ech 63 1 REFRIGERANT PIPES Service Ref PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC Part No PAC 07FFS 15 OPTIONAL PARTS PAC 10FFS Pipe length 7m 10m Pipe size O D Liquid 49 52 Gas 15 88 Connection methed
51. ORPORATION HEAD OFFICE MITSUBISHI DENKI BLDG MARUNOUCHI TOKYO100 TELEX J24532 CABLE MELCO TOKYO New publication effective Jun 1997 Copyright 1997 MITSUBISHI ELECTRIC ENGINEERING CO LTD Specifications subject to change without notice Issued in Jun 1997 NO OC123 440 Printed in Japan
52. S SW5 3 OFF ON SW5 3 OFF ON When 55 degrees or 70 degrees airflow discharge is selected with the LOW fan speed in COOL operation AUTO RETURN will appear below the temperature display One hour later the airflow direction returns to 30 degrees automati cally and AUTO RETURN will disappear If the airflow direction is set to 30 degrees during AUTO RETURN indication the time counting for AUTO RETURN is cancelled _ lt Auto vane drive gt a The auto vane is driven by a 2 5 motor b Airflow direction can be selected between the No 1 and No 2 setting Initial setting is No 1 g 30 45 55 70 c Vane motor drive time Unit sec Airflow direction change 50Hz Downward C gt Horizontal 0 Rise Horizontal Downward A OG 24 Downward Downward B 2 9 1 3 Downward B gt Downward C 0 2 3 d Airflow direction is based on the horizontal position detected by the vane motor limit switch When the horizontal posi tion can not be determined the vane motor will remain ON until it is determined If the horizontal position still can not be detected despite the 10minute detection the vane motor will turn OFF Remote controller indication continues After if the vane motor receives the auto vane ON command again it will restart detecting the horizontal position If the horizontal position still can not be determined despite
53. S SELECTOR CN51 I B CENTRALLY CONTROL CONNECTOR FAN MOTOR RELAY SW18 lt R B gt FUNCTION SELECTOR FAN2 lt I B gt EMERGENCY OPERATION CONNECTOR FUSE 6 3A CN1 lt R B gt PROGRAM TIMER CONNECTOR F C lt I B gt FAN PHASE CONTROL DC 12V POWER LED CN2 lt R B gt REMOTE SWITCH CONNECTOR SW1 lt I B gt MODE SELECTOR DC 5V POWER LED MV VANE MOTOR SW2 lt I B gt ADDRESS SELECTOR DRAIN PUMP CONNECTOR LS LIMIT SWITCH SW3 lt I B gt EMERGENCY OPERATION SWITCH DRAIN SENSOR CONNECTOR H2 DEW PREVENTION HEATER SW5 SW7 I B MODEL SELECTOR DRAIN PUMP RT1 ROOM TEMP THERMISTOR 0 C 15K 25 C5 4K SW6 lt I B gt TWIN TRIPLE SWITCH DRAIN SENSOR RT2 INDOOR COIL THERMISTOR 0 C 15K 25 C5 4K SWA lt I B gt HIGH SEILING NOISE SAVING SELECTOR HEATER T TRANSFORMER SWB I B NUMBER OF AIR OUTLETS SELECTOR THERMAL FUSE MF INNER THERMOSTAT FAN MOTOR SWC lt I B gt OPTION SELECTOR HEATER THERMAL SWITCH
54. SSNAY technical amp service manual 50 11 4 WAY AIR FLOW SYSTEM 1 Placement of the air outlets For this grill the airflow direction comes in 5 patterns Also by setting the dipswitches SWA and SWB on the indoor board to the appropriate settings you can adjust the air flow and speed Select the settings that are needed from those in Tables 2 and 3 according to the place where you want to install the unit 1 Decide on the pattern of the airflow direction lt Table 1 gt 4 direction 3 direction Note 1 For the 3 direction airflow install the air outlet shutter plate PAC SF38SP E S Fattori 1 Factory atr omlet Note 2 The 2 direction airflow is unavailable 8 t t lt m dk Te lt lt kt 2 According to the number of air outlets and the height of the ceiling to install the unit be sure to set the dip switches SWA SWB SWC on the indoor board to the appropriate setting Correspondence of ceiling heights to numbers of air outlets lt Table 2 gt swg SUN Silent Standard High ceiling 4 directional 2 4m 2 7m 3 0m 3 directional 2 7m 3 0m 3 3m Initial setting by factory gt SWA for ceiling height SWB for number of air outlets SWC optional filter element 3 ceiling 2 Unavailable STD Without filter element 2 Standard 3 3 direction
55. UIDE R01 29H 223 VANE MOTOR R01 29H 063 SPRING JOINT 1 lt 3 SET gt T7W 33K 063 SPRING JOINT R01 29H 056 PUSH BUTTON R01 29H 047 VANE SUPPORT T7W 560 258 CORD HEATER 240V 28 2W c5 R01 29H 040 GRILLE GEAR RIGHT _ R01 29H 041 GRILLE GEAR LEFT sch sch 00 sch sch sch 61 ee FUNCTIONAL PARTS PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC 62 eee Part numbers that are cicled are not shown in the figure o Part No Part Name Specification Q ty set PLH 1 6 PLH 2 PLH 2 5 KKHC Remarks Drawing No Wiring Diagram Symbol Recom mended Q ty BASE 1 BG02Y348G06 LEG BG00T672G08 LEG 80007672009 LEG BG00T672G10 LEG BG00T673G02 T7W E00 762 FAN MOTOR PAI V30F R01 29H 105 MOTOR MOUNT INNER COVER BG00T718G06 Bl Oo N R01 41N 114 TURBO FAN ch Q sch sch sch sch T7W E00 300 HEATER ELEMENT 467W 240V G9 h mh ech ech 02 ech ech Lj T7W E01 300 HEATER ELEMENT 700W 240V R01 32K 706 THERMAL FUSE 77 C 250V 10A R01 046 700 THERMAL SWITCH OFF42 C ON32 C R01 08K 202 INDOOR COIL THERMISTOR R01 41N 523 DRAIN S
56. ain hose Photo 9 Screws Drain pump Lead wire clamp Photo 10 Heater assembly Heater screws 11 Removing the heat exchanger 1 Remove the panel 2 Remove the fan guard 3 Remove the electrical parts cover 4 Remove the electrical parts box 5 Remove the drain pan 6 Remove the turbo fan 7 Remove the screw of the coil support A 8 Remove 2 screws of the coil support B 9 Remove 2 screws of the coil 10 Remove 4 screws of the piping cover of the outer wall and pull out the piping cover Photo 11 Gol support A Heat exchanger Coil support B Coil screws Photo 12 Screws of piping cover 59 14 PARTS LIST PANEL PARTS PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC Q ty set Part No Part Name Specification PLH 1 6 2 2 5 Remarks piagram mended Wiring Recom Drawing No KKHC Symbol Q ty T7W 560 003 AIR OUTLET GRILLE R01 29H 500 AIR FILTER R01 29H 691 INTAKE GRILLE R01 29H 061 HINGE GRILLE HANGER BG88H096H01 T7W 14K 200 REMOTE CONTROLLER T7W 556 305 REMOTE CONTROLLER CABLE 60 Oooo SOS PANEL PARTS PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC Part No Part Name Q ty set Specification PLH 1 6 2 2 5 KKHC Remarks Drawing No Wiring Diagram Symbol R01 29H 002 AUTO VANE 4 R01 29H 085 AIR G
57. ation continuous operation and current time start time fan speed the timer operation and stop time ON OFF button This switches between the 080 button operation and stop modes aun each time it is pressed Press this button to ELECTRIC mir S CI povgrr o The lamp on this butoon switch the cooler elec n CENTRALLY CONTROLLED lights during operation tronic dry dehumidify lt E automatic and heater CHECK ODE modes E DO nec VE DO C ONOT AVAILABLE fo s button This adjusts the vertical angle of the ventilation IIH 6 Dat i FIL k TEMP button This sets the room tem C FILTER button parature The temparature Z CHECK This resets the filter ser setting can be performed vice indication display TIMER SET in 1 C units as REMOTE CONTROLLER V Setting range AR JH240KA Cooler 19 C to 30 C Heater 17 C to 28 C This model name of the button CHECK TEST RUN button remote controller is indi This switches the hori Only press this button to cated zontal fan motion ON and perform an inspection OFF check or test operation Do not use it for nomal This button does not operation operate in this model Display CENTRALLY CONTROLLED display This indicates when the unit
58. check code of P5 drain pump malfunction DO NOT start the emergency operation because the drain may overflow How to operate gt 1 For emergency cooling set the dipswitch SW3 1 to ON and SW3 2 to OFF For emergency heating set the dipswitch SW3 1 2 to ON Emergency Emergency Emergency cooling heating operation Microcessor board 2 Turn ON the outdoor unit breaker and then ON the indoor unit breaker Emergency operation will now start 3 During emergency operation the indoor fan operates on high speed but the swing louvers and the auto vanes do not operate 4 To stop emergency operation turn OFF the indoor unit breaker NOTE The remote controller POWER ON OFF button can not start stop emergency operations CAUTION Do not use emergency cooling for more than 10 hours as the indoor coil may freeze 34 pT 2 9 Interlock with ventilation system LOSSNAY Mr SLIM LOSSNAY interlock operation is available by using the optional parts listed below 1 System organization Relay box PZ 12RB E Relay box Hy LOSSNAY Mr SLIM ie 1 2 rower supp LOSSNAY Mr SLM Power supply 2 Remote display adapter PAC SA88HA E LOSSNAY control switch PZ 05SLB2 E Remote controller Remote controller LOSSNAY control switch PZ 05SLB2 E 2 LOSSNAY models connectable to Mr SLIM are LGH 15RS E LGH 50RS E LGH 2
59. e CS eU Heat 17 to 28 fren er TESTRUN lt Display in HEAT operation gt green Z DC DEFROST The DEFROST symbol is displayed during the defrost operation STAND BY The STAND BY symbol is displayed from the time the heating oper ation starts until the heated air begins to blow lt HEAT operation time chart gt Operation starts by Room temperature POWER button becomes equal to ON set temperature Room temperature rises above set temperature Operation stops by POWER button OFF ON Thermostat __ te J __ OFF d i Extra LOW 1 LOW Extra LOW 1 m 1 Changeable by indoor 1 dipswitch SW1 7 LOW or HIGH LOW or HIGH Indoor fan OFF E 2 _ SW1 8 Depends on remote Depends on remote Horizontal controller setting Horizontal controller setting d Auto vane Ll gt oe OFF T 1 ON Drain pump OFF i OFF OFF during thermostat OFF ON hot adjustment Booster heater OFF defrosting Hot adjustrment Hot adjustrment OFF i Minimum 3 minutes 2 OFF From POWER ON until Compressor Power ON lamp warm begins to blow N Fd OFF 3 _ _ STAND BY lamp 2 Even if the room temperature falls below the set temperature during this period the compressor will not start until this period has ended 2
60. e wrap Connect a single phase 200V 220 230 240V AC to As B is the GND terminal be sure to ground the earth wire 2 Connect the transmission line to the transmission terminal block and fix it in place with a tie wrap when a centralized remote controller is being used CAUTION Never connect the power supply cord to the transmission terminal block Fig 1 Fig 2 C o o TERMINAL BLOCK CN22 FOR SW1 TRANS swt TRANSMISSION N Dip switch TRANS CN CN21CN51 cun onan NGA ei TERMINAL BLOCK sU FOR POWER w Tie wrap gt H el SUPPLY block for POWER ransmission to e x hn program timer or A SUPPLY centralized remote N 3 controller ER aa 147 Tie wrap E Transmission cord Fuse 5A POWER SUPPLY CORD TRANSFORMER Wiring has be changed when 200V power supply is used 2 When the centralized remote controller is used set the address number with the dipswitch SW1 of the pro gram timer adapter 68 pT 3 Connections from adaptor Fig 3 To program timer or Adaptor centralized remote 200 240V con
61. eaker OFF PAO OE ON 1 Check the address setting of remote controller and indoor controller 2 Make sure the timer adapter is used correctly 3 Turn another remote controller s DIP SW17 7 ON to make it sub controller Connect the sub controller to the unit and turn circuit breaker ON If the display centrally controlled disap pears replace the original remote controller If the display remains the same replace the indoor controller board 1 Connect a sub remote controller Q Turn circuit breaker ON If the display centrally controlled remains replace the indoor controller board If the display disappears turn the remote controller POWER button ON and check as follows Remote controller Sub remote controller Malfunction 1 Operating Display Display MR of 2 Operating Display Operating Display er Malfunction of 3 Display EO Display indoor Unit and Remote Controller 7 ion of 4 No Display Operating Display MN 1 2 Check the wire 3 Measure the resistance of the drain sensor connector CN50 Normal resistance should be 82 4 Turn the circuit breaker OFF and then turn ON If the remote controller remains abnormal despite the above measures replace the indoor controller board 1 Measure the voltage between terminals of remote controller If no voltage remove the terminals and measure the voltage betwee
62. er if resistance is less than 1 0M Remote controller Ass SUM povorr o CENTRALLY CONTROLLED 6 ay 1 W D I DEPPOST Far Cv a REMOTE CONTROLLER man TEST RUN button TEST RUN Display Indoor coil temperature code Display The above figure shows the RUN at cooling operation state of TEST Turn on main switch 12 hours before proceeding to step 2 to allow for crankcase heater operation Push the TEST RUN button twice and indication of TEST RUN will be shown on the liquid crystal display Press the 19 button to display COOL DRY or HEAT to confirm that cool or warm air is blown out At heating operation there may be a short delay before warm air begins to blow out Push al button LOW HIGH to check that the fan speed changes properly Check the operation of outdoor unit fans This unit controls the rota tion speed and performance capacity of fans In some cases it may rotate at low speed as the condition of outside air requires and the speed will be kept unless the performance has become deficient Therefore when the condition of outside air demands there may be such cases as the fan stops or rotates reversely Please note that these symptoms are not mulfunction After the check is finished leave the test run mode push the power ON OFF button It can als
63. essor ON 8 Outdoor fan ON 16 51C function 26C function 4 way valve ON 32 Overheat protection Bypass valve ON 64 Input circuit on controller board is abnormal Crankcase heater ON 46 3 1 Outdoor coil temperature To obtain data on the outdoor coil temperature add the number of bits of lighting LEDs and see the graph below to find the temperature C 100 Short 238 bits 80 Temperature 40F Open 8 bits 0 50 100 150 200 255 Number of bits 3 2 Fan output step To obtain data on the fan output step add the number of bits of lighting LEDs and see the graph below to find the fan rotational frequency PUH 1 6 2KA type PUH 2 5KA type lt 50Hz gt lt 50Hz gt ge UP 800 E 2 600 2 600 2 g g 400 400 bal bal E E 5 200 200 2 2 C E bal G 0 uw 0 50 100 150 200 250 50 100 150 200 250 Fan output step bit Fan output step bit 3 3 Total time of compressor operation Compressor operation time is indecated in 256 hour units To obtain the compressor operation time add the hours of light ing LEDs During the compressor operation time indication SW2 is not available 3 4 Check code indication When a protection function works
64. eturns to the RANGE A the indoor unit stops the defrosting mode While the indoor unit is in the defrosting mode the indoor fan and the booster heater stop x1 RANGE A Indoor coil temperature is more than 5 degrees above room temperataure RANGE B Indoor coil temperature is within 5 degrees either way of room temperature RANGE C Indoor coil temperature is more than 5 degrees below room temperature Fig 1 Indoor coil temperature minus room temperature degree RANGE A ssp 0 RANGE B RANGE C _____ Es 2 4 AUTO operation Automatic COOL HEAT change over operation lt How to operate gt Press POWER ON OFF button d Me oo Press the IHH button to display Li Q sO 58 lt h Ee 88 agag Eat Press the amp TEMP button to the desired temperature NOTE The set temperature changes 1 C when the or necne SSS T C Y button is pressed one time COC CO 2 DO Automatic 19 to CHECK CAD COO AUTOMATIC works to change by itself the operation Em wen TEST RUN i i i i GE Ce mode either to cooling or heating according to the room temparature 1 Initial mode When AUTO operation starts after unit OFF If the room temperature is higher than the set temperature operation starts in COOL mode f the room temperature is equal to or lower than the set temperature operation starts HEAT mode
65. fan will run on EXTRA LOW speed ii Hot adjustment Hot adjustment is a warm up for HEAT operation Start conditions The hot adjustment works under any of the follwing conditions HEAT operation starts Defrosting ends Thermostat turns ON Hot adjustment Initially the indoor fan runs on EXTRA LOW speed When 5 minutes have passed or the indoor coil temperature exceeds 35 C the fan speed changes to LOW Two minutes later the hot adjustment ends Then the fan speed depends on the remote controller setting iii The indoor fan stops when the indoor coil temperature is within 5 degrees either way of room temperature iv To eliminate the remaining heat the indoor fan runs for the first 1 minute after the booster heater is turned OFF 3 Auto vane control a STOP mode fixed operation 1 The airflow direction at the start up of HEAT operation is the same as that of the previous operation ii The airflow direction can be charged by the remote controller setting 30 45 5 70 SWING SW5 3 OFF ON In the following cases airflow direction becomes 30 regardless of the remote controller setting During the hot adjustment with fan speed at EXTRA LOW During defrosting within door fan OFF During the thermostat OFF b SWING mode i The vane motor turns ON when the SWING mode is selected The vane motor is continuously ON during SWING mode ii In the followin
66. for cooling and 1 2 on for heating 3 Turn on the outdoor unit side circuit breaker then the indoor unit side circuit breaker 4 During emergency operation indoor fan runs at High speed but auto vane does not work 5 Thermostat will not function Cold air blows out for defrosting during heating thus do not operate defrosting for a long time 6 7 Emergency cooling should be limited to 10 hours maximum the indoor unit heat exchanger may freeze After every operation switch the fan connector to FAN1 and set all dip switches SW3 lt I B gt to OFF er is not possible NOTE If the drain water lift up mechanism is identified to be defective with the microcomputer doctor during cooling do not use emergency operation it causes drain overflow 15 PLH 1 6KKHC PUH 1 6VKAz PLH 2KKHC PUH 2VKA PLH 2 5KKHC PUH 2 5VKAz2 Indoor unit heat exchanger li Indoor Indoor coil thermistor RT2 Distributor with strainer Refrigerant pipe option 15 88mm 95 8 2 heat insulator 4 way valve Ball valve Oil separator 7 REFRIGERANT SYSTEM DIAGRAM High pressure control switch Outdoor unit Outdoor unit Service port Outdoor heat exchanger Unit mm Outdoor coil thermistor TH que Strainer a S asss A tube Service port Strainer
67. for the first time during operation the operation stops and restarts after the 3 minutes time delay mode When the protection function works again the operation stops Check mode When both SW3 1 and SW3 2 are OFF the check code is indicated If the outdoor controller board receives the compressor ON command from the indoor controller board during check mode the indication changes to output state indication By pressing SW2 duirng normal operation operation will continue The latest check code is indicated 47 Lee 4 TROUBLESHOOTING ACCORDING TO CHECK CODE Blinking LED Diagnosis of malfunction Cause Check point LD1 Reversed phase Phases and are con Check the power supply connection nected improperly LD2 Open phase Phase is open Check the power supply Contact of protector such as Check each protector thermal switch opened when power was turned on LD3 Outdoor coil thermistor is Outdoor coil thermistor is Measure the resistance of the thermistor abnormal Open circuit or short broken Check the thermistor If normal replace the out circuit Thermistor was connected door controller board incorrectly LD4 pressure switch 63H2 62H2 was badly connected Check 63H2 and the outdoor fan motor function 63H2 was working Check if refrigerant supply is low Check if air cycle is short cycled LD5 Thermal relay 51C functio
68. g cases the airflow direction is 30 regardless of the remote controller setting During the hot adjustment with fan speed at EXTRA LOW During defrosting with indoor fan OFF During thermostat OFF 29 4 Booster heater control When the room temperature is 3 degrees below the set temperature the booster heater will turn ON When the room temperature is equal to the set temperature booster heater will turn OFF During the hot adjustment the booster heater will not work lt Overheat prevention gt When the indoor coil thermistor rises to 60 C or above the booster heater cannot work When the indoor coil thermistor falls to 55 C or below the booster heater can work 5 Detecting abnormalities in the outdoor unit When the outdoor unit is determined to be abnormal by the following causes the compressor will stop and the check code P8 will appear on the remote controller display During compressor ON after hot adjustment 1 See the next page Olf the difference between the indoor coil temperature and room temperature is in the RANGE B the indoor fan will stop Within 20 minutes after entering RANGE B except for the first 10 seconds a If the temperature difference enters RANGE A the hot adjustment stasrts b If the temperature difference is still in RANGE B the outdoor unit is deemed abnormal C If the temperature difference enters RANGE C defrosting starts Within 20 minutes after entering RANGE C
69. g current Munsell 5Y 7 1 External finish Capillary tube Refrigerant control Hermetic Compressor NH41VMD Model 2 0 Motor output Line start Starter type Inner thermostat HP switch OUTDOOR UNIT Protection devices Plate fin coil Heat exchanger Propeller direct x 1 Fan drive x No kW 0 085 Fan motor output m min CFM 50 1764 Airflow Reverse cycle Defrost method 52 Noise level 870 34 1 4 295424 11 5 8 add 1 Dimensions 850 34 1 4 Weight kg Ibs 68 150 Refrigerant R 22 Charge kg 165 2 8 6 2 Liquid mm in 9 52 3 8 Pipe size O D Gas mm in 15 88 5 8 Indoor side Flared Connection method Outdoorside Flared REFRIGERANT Between the indoor amp Height difference Max 50m outdoor unit Piping length Max 50m 4 DATA 1 PERFORMANCE DATA 1 COOLING CAPACITY Indoor Outdoor intake air DB C 30 35 WBC C CA 16 1 52 1 63 18 1 56 1 67 20 1 59 1 71 22 1 62 1 75 16 2 40 2 57 18 2 45 2 63 20 2 50 2 69 22 2 55 2 76 16 2 78 2 97 18 2 84 3 05 20 2 90 3 12 22 2 96 3 19 Service Ref PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC Note CA Capacity W P C Power consumption kW C
70. ged The size of the cam is wrong E Refer to check code on remote controller display See page 45 Indoor controller is damaged Dip switch setting is wrong Indoor controller is Vane motor limit switch damaged is damaged Vane motor is dam Vane motor is dam aged aged Vane motor limit switch Poorly connected is poorly connected Auto vane is wired after power is turned to ON Disconnected ing wire is connected incorrectly Indoor outdoor connect ing wire shorts Compressor protector is damaged Deicer is broken Remote controller is Transmission wire is damaged damaged Transmission wire is Connector is poorly poorly connected connected Indoor terminal block is poorly connected Remote controller ter minal block is poorly connected 8 MR SLIM LOSSNAY INTERLOCK OPERATION lt Symptoms that are not malfunctions gt If any of the following symptoms occur they are not malfunctions Symptom Cause LOSSNAY control switch does not work LOSSNAY control switch can not work during interlock opera tion LOSSNAY control switch is effective only while Mr SLIM is not operating LOSSNAY air speed can not be controlled in interlock opera tion LOSSNAY fan speed is fixed to HIGH during interlock opera tion LOSSNAY fan speed LOW HIGH can be switched only during LOSSNAY individual operation with the LOSSNAY contorl switch For LOSSNAY troubleshooting refer to the LO
71. he remote ON OFF control and the individual remote control 3 1 System Figure 6 shows the case of three units The same is the case with any number of units Figure 6 power supply of control circuit Timer adapter PAC SA89TA E 0 KEE A 2 wire Relay box el J imer adapter cables cable Remote Remote ON OFF controller switch NOTE1 Install the relay box where you can be serviced it easily NOTE2 For control circuit wiring use a wire of No 14 AWG or a control cable according to the power supply of control circuit NOTES When the power supply of the control circuit is 220 240V AC Do not connect the control circuit wire to the remote controller cable directly Do not place the control circuit wire and the remote controller cable into the same conduit tube 3 2 Basic wiring Caution Before starting all units simultaneously by the remote ON OFF switch be sure to connect a sequence start timer into the remote ON OFF circuit Otherwise a rush of starting current may damage the power supply No 1 unit 2 unit switch relay box relay box Next unit Glow switch or pilot lamp can be combined to easily identify the
72. intake grill 90 3 Remove the chip 4 Slide the shaft in the hinge to the left and remove the intake grill 2 Removing the fan guard 1 Open the intake grill 2 Remove the 4 screws of the fan guard OPERATING PROCEDURE PHOTOS amp ILLUSTRATIONS 1 Removing the air intake grill Shaft 1 Press the PUSH button Figure 1 PUSH button Photo 1 Intake grill Fan guard Fan guard screw 1 Remove the fan grand 2 Disconnect the lead wire of the vane motor from the clamp and disconnect the red connector 8P 3 Remove 2 of 4 screws from the electorical parts cover 4 Remove the electorical parts cover 5 Disconnect the following connectors from the box Red 3P for the fan motor White 2P for the indoor coil trermistor Blue 2P for the drain pump White 4P for the drain sensor 6 Disconnect the green anti falling wire of the electrical parts 7 Remove 3 of 4 screws from the electrical parts box and 8 Pull out the electrical parts box Electrical parts inside the box Terminal block Room temperature thermistor Indoor controller board Radiator 1 Remove the fan guard 2 Remove the turbo fan nut and radiator aluminum cap 3 Pull out the turbo fan 4 Disconnect the connector of the fan motor lead wire 5 Remove the 3nuts of fan motor 3 Removing the electrical parts box Photo 2 Screws box Photo 3 vane motor loosen the other screw Electrical box Connercter
73. load protect 6 minute restart prevention AUTOMATIC COOLING HEATING OPERATION Auto COOL HEAT operation 16 NO Initial mode HEAT mode NO COOL mode After 15min Ti lt T0 2 NO operation HEAT operation x15 P iii When thermostat is OFF In the case of i ii and iii above airflow is horizontal regardless the VANE setting 16 When AUTO operation is started COOL or HEAT mode is selected automatically x17 T1 Room temperature To Set temperature After 15min Te T0 2 Allowance set Compressor OFF i Hot adjust release YES Hear operation Cool mode set 1 Until Low airflow is set while hot adjustment ii While defrosting FAN STOP 19 O DRY OPERATION DRY operation Four way valve OFF NO Initial dry operation YES x8 Vane setting notch Vane initial setting gt 12 YES Room tempereature is 18 C or lower compressor operation Compressor amp thermostat ON Compressor ON time completes gt YES 10 minute compressor OFF timer start gt Compressor OFF 314 Fan STOP 3 minute time delay Compressor amp thermostat ON
74. min utes and then stop for 3 minutes If the room themperature thermistor reads 24 C 26 C with thermostat ON the compressor will operate for 2 more minutes and then stop for 3 minutes If the room temperature thermistor reads below 24 C with thermostat ON the compressor will stop for minutes If the thermostat is OFF regardless of room temperature the compressor will stop for 10 minutes Coil frost protection Coil frost protection in DRY operation is the same as in COOL operation Coil frost prevention Coil frost prevention does not operate in DRY operation 2 Indoor fan control The indoor fan runs on LOW speed during compressor operation The fan speed cannot be changed with the remote con troller Also the indoor fan does not run during compressor OFF 3 Auto vane amp drain pump controls Same as in COOL operation 4 Detecting abnormalities in the outdoor unit An abnormality in the outdoor unit can not be detected in DRY operation 27 2 3 HEAT operation lt How to operate gt Press POWER ON OFF button d s mM povorr o eX 4 CENTRALLY Wa 2 Press the IDO button to display ie oe D OP MS ec EG 88 0 88 88 177 SD G Press the TEMP button to set the desired temperature TRAE em NOTE The set temperature changes 1 C when the C or 000 DS T ee c 65 5 5 05 C v 2 button is pressed one tim
75. mote controller are valid Priority given to the last instruction received CENTRAL ON OFF switching by the accessory ENGAGED POWER ON OFF GROUP 88 12345678910 GROUP SELECTION BACK AHEAD ACTIVE BYPASS DUAL CENTRAL PROGRAM TIMER CONTROLLER OPERATION ACTIVE BYPASS DUAL CENTRAL ate MITSUBISHI ELECTRIC remote controller is invalidated Control is by the centralized remote controller only Initial setting is DUAL LCD Matrix Display This display indicates the operational sta tus of all connected units either by steady lighting or by flashing These buttons are used to designate the attached unit s They designate the unit to be centrally controlled e When group 00 is designated col lective ON OFF instruction is sent to all units e When group 01 16 is designated ON OFF instruction is sent to the des ignated units only ACTIVE BYPASS switch This is a change over switch for the program timer It selects timer operation on the pro gram timer Use BYPASS when a program timer is not connected ACTIVE The switch turns ON OFF operational instructions from the program timer automatically BYPASS ON OFF Operation is by the central ized remote controller only Initial setting is BYPASS Independent DUAL CENTRAL a
76. n 51C was connected incor Check 51C the compressor and power supply rectly 51C was working LD6 Thermal switch 26C function 26C was connected incor Check 26C rectly Check if refrigerant supply is low 26C is working Check if the capillary tube is clogged LD7 Over heat protection The thermistor is broken Measure the resistance of the thermistor Coil temperature is over Check the outdoor fan motor 67 Check if air cycle is short cycled LD8 Input circuit of outdoor con Pulse input is abnormal Replace the outdoor controller board troller board is abnormal 5 WHEN OUTDOOR UNIT DOES NOT WORK Cause 1 Indoor outdoor connecting wires are poorly connected Refer to next page 2 Power supply is poorly connected 3 Connector or transformer is broken 4 Fuse 6A in the outdoor controller board is blown Check points 1 Check the connecting wires 2 Check the power supply 3 Check connectors and transformers 4 Check the fuse 48 pT 6 WRONG WIRING ON SITE 6 1 Between remote controller and indoor unit If the wire is disconnected between the remote controller and the indoor unit nothing is displayed on the remote controller when the POWER button is pressed The beep sound will also not be heard 6 2 Phenomenon due to wrong wiring between indoor and outdoor units
77. n wires If the voltage is between 6VDC and 12V replace the remote controller 2 8 Check each point If it is not defective replace the indoor controller board 43 O 2 SELF DIAGNOSTIC FUNCTION WITH REMOTE CONTROLLER 2 1 When malfunction occurs during operation When a malfunction occurs the indoor and outdoor units stop and the malfunction is displayed on the LCD of the remote con troller A ON the set temperature display part CHECK appears and the unit address and the check code are diplayed alternately at one second intervals Check mode MITSUBISHI weg Example Aitenateli y SUI Doug o h CENTRALLY CONTROLLED CE SEE Ar displayed C O o Olg e 880 Ges Ser A T 82 C grog Cay I DEPPOST AVAILABLE Unit address Check code Deoa 8 0 5 S C O C OCO Sue C 2 When one remote controller controls several units in the group con ren trol the LCD shows the unit address and check code of the first mal neo functioning unit 3 To cancel the check mode press the OON OFF button In remote ON OFF control press the remote ON OFF switch In centralized control turn OFF the ON OFF button of centralized controller NOTE The latest check code is memorized even if the check mode is cancelled by the way mentioned above It takes 60 seconds maximum to display the memorized check code 2 2 How to use the self diagnostic fu
78. nction for service A For normal control with one unit and one remote controller 1 Pressing the C gt CHECK button on the remote controller twice starts the self diagnostic function 2 During the self diagnostic function CHECK appears at two positions on the remote controller display Then at least 10 seconds later the unit address and the check code is alternately displayed at one second intervals 3 Check and repair the unit according to the check code Refer to the next page 2 3 For group control using one remote controller 1 Press the 2 TEMP or C v TEMP button on the remote controller to advance or go back to the unit address Each time C gt TEMP button is pressed the unit address advances by one Each time C v gt TEMP button is pressed the unit address goes back by one The check code and the unit address appear alternately 2 The check code U8 means no malfunction has occurred since installation The check code EO means the following conditions The unit address displayed on the remote controller does not apply to any unit Power is not supplied to the unit Signal transmitting receiving circuit is abnormal 3 Check and repair the unit according to the check code Refer to the next page 44 ______ j eee Diagnosis of malfunction Cause Check points EO Signal transmitting receiving During individual unit control 1 Check the transmission wire error 1
79. nd ACTIVE BYPASS setting of all the groups is possible When the power supply to the centralized remote controller is cut due to power failure all settings will return to original DUAL and BYPASS 66 5 3 Connection method 1 Connections in the power supply cord 1 Connect the power supply cord to the power supply terminal block and fix it in place with a tie wrap Connect a single phase 200V AV 220 230 240V to 9 As is the GND terminal be sure to ground the earth wire 2 Connect the transmission line to the transmission terminal block and fix it in place with a tie wrap Use a 1 6 AWG 14 or above two wire cable for the transmission line CAUTION Never connect the power supply cord to the transmission terminal block TERMINAL BLOCK TERMINAL BLOCK FOR TRANSMISSION OF POWER SUPPLY 3 o ol Transmission E 9 WE e Tie wrap ay 1 TRANSFORMER Tie wrap J POWER 5A A SUPPLY N E mr Wiring has to be changed when a 200 230 or 240V power is used 2 Connection method of centralized remote controller and power supply board 1 Connect the centralized remote controller and power supply board with a non polar two wire cable To adapt
80. o be stopped by pushing the timer MODE button When a TEST RUN is started the timer shall be set to 2 hours The unit will automatically turn off after 2 hours 33 ee 1 Indoor coil temperature code During the test run the indoor coil temperature code from 1 to 15 is displayed on the remote controller instead of room temperature The code should fall with the lapse of time in normal COOL operation and should rise in normal HEAT operation Code 7 Ge 40 1 C 10 C 15 C 20 C Be 30 C 35 C Code 9 10 11 12 13 14 15 Indoor coil Thermistor abnormality temperature 2 Trouble during test run If the unit malfunctions during the test run refer to section 10 in this manual entitled TROUBLESHOOTING When the optional program timer is connected to the conditioner refer to its operating instructions 2 8 Emergency operation When the remote controller or microprocessor malfunctions but all other parts are normal emergency operation is started by setting the dipswitch SW3 on the indoor controller board Before emergency operation gt 1 Make sure the compressor and the indoor fan are operating normally 2 Locate the defect with the self diagnostic function When the self diagnostic function indicates protective function is working release the protective function before starting the emergency operation CAUTION When the self diagnostic function indicates a
81. o the set speed the quiet cycle control will work a Normal control i Fan speed LOW HIGH depends on the remote controller setting regardless of the thermostat ON OFF ii Fan speed will remain on LOW if an abnormality in outdoor unit is detected 5 minutes When the abnormality detection is released the fan speed returns to the set speed 5 minutes 5 minutes 7 Start up of outdoor unit abnormality detec SET SET tion Low Low Release of outdoor unit abnormality detec tion OFF Unit stop due to outdoor unit abnormality with P8 indication NOTE 1 Fan stops immediately if the unit stops or the check mode is started 23 _ ss 3 Auto vane control Auto vane position is set to 30degrees airflow at the start up of COOL operation It can then be changed by the remote 24 controller a Stop mode fixed operation i At start up of COOL operation the auto vane is set to 10 degrees airflow direction ii Airflow direction can be changed with ei botton Fan speed LOW gt 30 e 55 E 70 SWING Fan speed HIGH De 30 LR 45 ee 1595 gt 70 SWING b SWING mode i The vane motor turns ON when the SWING mode is selected The vane motor is continuously ON during SWING mode AUTO RETURN Fan speed LOW 30 55 70 B B B AUTO RETURN AUTO RETURN Fan speed HIGH 30 45 55 70 SS S
82. ooling capacity correction factors Refrigerant piping length one way 20m 25m 30m 35m PLH 1 6KKHC 0 978 0 969 0 961 0 956 Service Ref PLH 2KKHC 0 978 0 966 0 959 0 950 PLH 2 5KKHC 0 970 0 960 0 950 0 940 Cooling performance curve 50Hz 1 4 Oo qu INDOOR WB C HP 1 0 22 20 o 18 lt 0 8 16 lt O 06 1 4 INDOOR WB C 20 E um 18 c 16 10 c 2 08 ER o 0 6 0 4 L 5 5 15 25 35 46 OUTDOOR __ s 2 HEATING CAPACITY Outdoor intake air DB C Service Ref 0 5 P C CA PC 1 36 1 49 PLH 1 6KKHC 1 46 1 60 1 56 1 71 2 15 2 35 PLH 2KKHC 2 31 2 53 2 47 2 71 2 21 2 43 PLH 2 5KKHC 2 38 2 61 2 55 2 80 Note CA Capacity W P C Power consumption KW Heating capacity correction factors Refrigerant piping length one way 20m 25m 30m 35m PLH 1 6KKHC 1 00 1 00 1 00 0 998 Service Ref PLH 2KKHC 5 1 00 5 0 998 PLH 2 5KKHC 5 1 00 5 0 998 Heating performance curve 50Hz 1 4 m 20 E 25INDOOR DB C gt 1 0 2 lt 08 lt O 0 6 1 4 INDOOR DB C 12 20 15 E Es 2 D 2 0 8 e lt 5 0 6 0 4 42 40 5 0 5 10 15 OUTDOOR WB
83. or s Power supply board box terminal block o Gi GI ee 1 Centralized remote controller To adaptor s Non polar terminal block two wire cable H lt 2 Wiring diagram 3 Be sure to set the maximum address number with the dipswitch SW17 on the centralized remote controller Da LIE eV 259 etl f ENGAGED 88 mm 1 eack YARED 5 wesse f e Centralized un ana Dip switch remote controller Power supply SW17 board fiin 67 6 PROGRAM TIMER ADAPTER This adapter is needed when a centralized remote controller PAC 805RC is used Part No PAC 825AD 6 1 Parts included ADAPTER 1 3 core cable 1 8 3 0000 1P B Length 2m 6 7 Length 2m 6 7 4 core cable SEN ENEE ENEE S 1 5 core cable 1 Length 2m 6 7 Length 2m 6 7 6 2 Connection method Connection and wiring methods differ with the type of the indoor unit used Confirm the type before carrying out the work 1 Connections in the adapter box 1 Connect the power supply cord to the terminal block and fix it in place with a ti
84. ote Controller Daily timer can be set in 30 minutes units for up to 24 hours Each unit can be set for unit ON unit OFF or setback operation 2 Setback operation PAC SK65PT Set back operation is useful for reducing running costs e g At a hotel with a 24 hour system 8 00 23 00 Cooling operation with set temperature at 26 C 23 00 8 00 Setback operation with 2 degrees of setback As shown in the chart on the right the set temperature rises 2 degrees automatically during the setback operation When the setback operation ends normal operation will begin 3 Weekly timer function Daily timer function can apply to each day of the week 64 28 C 26 C 8 00 23 00 8 00 Normal Setback Normal operation operation operation 2 3 How to connect program timer 1 Install the program timer next to the remote controller the same way as the remote controller is installed 2 Connect the program timer and the remote controller with a 6 wire cable as shown in the figure below eens Connect to indoor unit with 2 wire cable NOTE While the program timer is connected to the remote controller the 24hour ON OFF timer on the remote controller will not operate MITSUBISHI ELECTRIC Conn ct to CN1 2 4 Names and functions lt PAC SC32PT gt Use 6 wire cable Connect to CN1 WEEKLY TIMER SETTING DISPLAY
85. ping are set at different corners which means that flare connections and drain piping heat insulation work can be smoothly and reliably implemented 4 Easy access terminal and control panels for efficient wiring When performing wiring work progress can be checked on the power source terminal and control panels simply by removing the electrical parts cover Adress setting can also be done easily from beneath at a convenient angle 5 One push to provisionally position front panel Panel weight has been redused from 7kg to 3 7kg The previous 3 step process for provisionally positioning the panel has been streamlined and now a simple one push action at the diagonal corners fixed it into place resulting in major time saving 2 PART NAMES AND FUNCTIONS Indoor Main Unit PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC Remove dust and pollutants from inhaled air Horizontal Air Outlet Sets airflow horizontal automatically during cooling or dehumidifying Auto Air Swing Disperses airflow up and down and adjusts the angle of airflow direction Air Intake Inhales air from room O Remote controller Once the controls are set the same operation mode can be repeated by simply pressing the ON OFF button Operation buttons button 88 8 button a button This switches between This sets of switches the This sets the ventil
86. r unit is installed near the ceiling the temperature read by room temperature thermistor differs from the actual living space temperature by about 4 degrees Therefore the room temperature read by room temperature thermistor must be lowered by 4 degrees OFF 4 degree adjustment ON NO adjustment Switch for fan speed during thermostat OFF in HEAT operation OFF EXTRA LOW ON LOW Switch for fan speed during thermostat OFF in HEAT operation OFF EXTRA LOW or LOW set with SW1 6 ON LOW or HIGH set with remote controller Switch for detecting abnormalities in the outdoor unit abnoamality detection OFF When an abnormality occurs it is detected ON Even if an abnormality occurs it can not be detected Switch for auto restart function OFF This function does not work ON This function works _ 2 SW2 Address selector ON Used in setting the unit address for group control OFF For further information refer to page 52 3 SW3 Emergency operation switch Normal operation For emergency cooling For emergency heating 12 12 12 ON ON ON OFF OFF OFF 4 SW5 Model selector 1234 ON SW5 1 Not for use SW5 2 OFF For models with heat pump ON For models without heat pump SW5 3 Not for use SW5 4 This switch is unavailable for PLH KK H C Keep this switch at OFF 5 SW6 Twin Triple switch 1234 Single control Twin control Triple control ts mm SW6 1 OFF ON Twin NO 1 ON Triple N
87. ressor is ON The outdoor coil temperature is being displayed by LED Outdoor controller board dip switch SW3 1 OFF SW3 2 ON The outdoor coil thermistor reads 8 C or below The operation state and the termination conditions of the compulsory defrosting are the same as those of the normal defrosting As an exception the defrost interval after the defrosting completion is 50 minutes 2 Fixed fan output While the compressor is operating exept during defrosting and the fan output step is indicated by LED pressing SW2 fixes the fan output The fixed fan output can be released when any of the following conditions are satisfied SW2 is pressed again SW3 setting is changed The compressor stops Defrosting operation starts 3 Function of switches on the outdoor controller board SW1 Clears the check code memory push button switch SW2 Switches the output state indication and the check code display push button switch SW3 1 2 Switches the output state indication items dip swtich For further information refer to page 50 4 100 fan output Fan output is fixed to 100 by shorting the connector CN22 However the fan stops during compressor OFF or defrosting Open circuit of CN22 restarts the normal fan control 5 Time shorterning Short circuit of the connector CN21 shortens the time as follows Fan control period 30 seconds gt 3 seconds Three minutes time delay function minites 3 seconds Max time of def
88. rosting 15 minites 15 seconds Defrost interval 30 120 minutes gt 3 12 seconds amp Compressor ON OFF time for bypass valve ON OFF 30 minutes 3 seconds Compressor ON time to start other functions x minutes gt x seconds Crankcase heater operation 1 hour 6 seconds 42 10 1 TROUBLE IN TEST RUN TROUBLESHOOTING Symptom Cause Check points The display CENTRALLY CONTROLLED on remote controller dose not disappear When remote controller POWER button is turned ON the check code EO appears When remote controller POWER button is turned ON operating display appears but disappears soon Despite turning POWER button ON the remote controller display does not appear 1 Wrong address setting of remote con troller indoor controller board 2 Timer adapter is connected to the remote controller 3 Singnal transmission error between indoor unit and remote controller 1 Signal transmission error between indoor unit and remote controller 1 Short circuit of indoor outdoor connect ing wire 2 Short circuit of transmission wire 3 Short circuit of drain sensor heater cir cuit 4 Wrong operation of remote controller due to noise wave emitted by other appliances Damaged remote controller Short circuit of transmission wire Bad contact of indoor CN40 CNAO is attached to a sub unit Damaged transformer Bad contact of CN4T Blown fuse Circuit br
89. s OP With fil r element a 2 Installing the outlet shutter plate PAC SF38SP E For the 3 direction airflow close one air outlet fully by installing the air outlet shutter plate before installing the grill lt Caution gt Installing the shutter plate not securely will cause air leak and water dripping lt How to attach the shutter plate gt Peel off the separation sheet from the shutter plate and attach the shutter plate to the air outlet of the indoor unit Indoor unit f 0 5 Shutter plate ye 51 12 SYSTEM CONTROL 1 VARIETY OF SYSTEM CONTROL FUNCTIONS Group control with a single remote controller See page 53 055 gt Unit Unit Unit Many units installed at different locations can be started and controlled with a aingle remote controller The remote controller can be mounted in a different location using a non polar two wire cable which can be extended up to 500m A maximum of 50 units can be controlled with a ON OFF and indi vidual controls e single remote controller All units operate in the same mode Optional 2 Both remote eee All units can be turned on or off simultaneously using a remote ON OFF switch Also each unit can be controlled individually by each remote controller Duning remote Auto restart func
90. set by the indoor dipswitch SW5 1 TS om est CHECK TIMER SET TEST RUN REMOTE CONTROLLER PARA E Available in COOL operation with fan speed on HIGH or in HEAT operation Unavailable in DRY operation If fan speed changes from LOW to HIGH during 45 downward airflow in COOL mode the direction automati cally changes to 30 SWING Changes by pressing the f button 1 COOL DRY operation At the start up of COOL or DRY operation the airflow direction in automatically set to 30 After it can be changed to another direction with button on the remote controller Auto returns When 55 or 70 airflow is set with fan speed in LOW AUTO RETURN appears below the room temperature display One hour later the direction changes to 30 degrees automatically and AUTO RETURN disappears 2 HEAT operation At the start up of HEAT operation airflow direction depends on the setting of the last operation After it can be changed to another direction with 45 button The airflow direction shifts to 30 regardless of the remote controller settings under any of the following conditions Thermostat OFF Defrosting Indoor fan speed EXTRA LOW in hot adjustment 32 pT 2 6 TIMER operation SUNT povorr o CENTRALLY CONTROLLED ON OFF 25 oec dt ki O e 88 c 88891 1G
91. sor start up b The outdoor coil thermistor reads 5 C or below c The outdoor fan motor output step is 100 d Total time of compressor operation exceeds 30 minutes and the outdoor coil temperature has fallen by 8 degrees or more in comparison with that of 10 minutes after the compressor start up NOTE The outdoor coil temperature of 10 munites after the compressor start up is memorized until the defrosting operation has ended B When all of the following conditions are satisfied defrosting will start a c The same as above a c in item A d Total time of compressor operation exceeds defrost interval Further information on the defrost interval is described in 3 C After the total time of compressor operation exceeds the defrost interval the thermostat repeats ON OFF three times Two minutes after the fourth ON of the thermostat if the outdoor coil thermistor reads 5 C or below and the fan out put output is 100 defrosting will start NOTE The count of the thermostat ON OFF is cleared by the compressor OFF command or defrosting start up 2 During defrosting Even if the thermostat turns OFF defrosting continues The 4 way valve bypass valve outdoor fan and indoor fan are OFF 40 3 Defrost interval The defrost interval time is determined as follows Initial defrost interval is 50 minutes The defrost interval after defrosting depends on the preceding defrosting time as shown below
92. sure the resistance of the thermistor 2 Damaged thermistor As for the normal resistance refer to the case of P1 If the resistance is normal replace the indoor con troller board P5 Malfunction of drain pump 1 Malfunction of drain pump 1 Check the drain pump 2 Damaged drain sensor 2 Check the drain sensor Check the drain sensor heater Normal resis tance should be 82 If the resistance is normal replace the indoor con troller board P6 Coil frost protection is work 1 Short cycle of air cycle 1 Clear obstructions from the air cycle ing 2 Dirty air filter 2 Clean the air filter 3 Damaged fan 3 Check the fan 4 Abnormal refrigerant 4 Check the refrigerant temperature P7 System error 1 Wrong address setting 1 Check the address setting 2 Signal transmitting receiving cir 2 Check with another remote controller If check cuit of remote controller is code other than P7 appears replace the origi abnormal nal remote controller 3 Wrong SW6 setting 3 Check SW6 setting Abnormality in outdoor unit 1 Wrong wiring of indoor outdoor 1 Check the indoor outdoor connecting wire connecting wire 2 Change the connection of electric wiring 2 Reversed phase 3 Check the protection device 3 Protection device is working 4 Measure the resistance of the outdoor coil ther 4 Damaged outdoor coil thermis mistor If the resistance is normal replace the tor outdoor controller board
93. ted with 240Vpower If 220 230v power is used change the wiring connection showing fig 2 Dos YELLOW ORANGE When power supply is RED 2 Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing 3 Indoor and outdoor connecting wires are made with polarities make wiring matching terminal numbers 4 Symbols used in wiring diagram above are Terminal block Connector 5 Emergency operation If remote controller or microcomputer fails but there is no other truble emergency operation is possible by setting dip switch SW3 lt I B gt on the indoor con troller board Check items 1 Make sure that no other trouble exists the outdoor unit Trouble with the outdoor unit prevents emergency operation If any trouble exists the outdoor unit error code P8 will be displayed on the remote controller and the trouble position will be shown on the outdoor controller board LED See electric wiring diagram of the outdoor unit for details 2 Make sure that there is no trouble with the indoor fan Emergency operation will be continuous run with the power ON OFF ON OFF with the remote control Emergency operation procedure 1 Switch the fan connector on the indoor controller board from FAN 1 to FAN 2 2 Set the dip switch SW3 lt I B gt on the indoor controller board to on and 2 off
94. the sources of trouble are listed below EO Signal transmitting receiving error P1 Room temperature thermistor malfunction P2 Indoor coil thermistor malfunction P4 Drain sensor malfunction P5 Drain overflow P6 Coil frost overheat protection P7 System error P8 Outdoor unit trouble x3 The CHECK swich will show if an error has occurred in the past 4 Fan runs on low speed for 1 minute in order to remove overheat air x5 The 3 minute 6 minutes heating mode time delay functions after compressor stops x6 FAN or AUTO mode is selected by the indoor dipswitch setting 3 7 In FAN mode fan speed and vane operation depend on the remote controller setting Compressor is OFF 8 OPERATION FLOW CHART 17 COOLING OPERATION COOL operatio Four way valve OFF Vane initial setting 55 deg downward angle 70 deg downward angle YES NO Fans YES NO Downward discharge 1 hour YES Vane setting notch horizontal x9 NO Compressor YES Wes NO Allowance cancel NO YES 3 minute lime delay NO YES 6 minute YES lt time delay ie NO NO 6 minute NO Anne time delay compressor operation SS Allowance set Coil frost protection 10 Coil frost prevention 311
95. trol turns OFF One second later the indoor fan relay will turn OFF 38 pT 3 OUTDOOR UNIT CONTROL 3 1 Outdoor fan control The rotational frequency of outdoor fan is phase controlled according to the outdoor coil temperature This control allows the cooling operation even with the low outside air temperature and the heating operation even with the high outside air tempera ture 3 2 Outdoor unit control The outdoor unit turns ON OFF the cooling heating operation according to orders given from the indoor unit 3 3 Protective functions If an reversed phase an open phase an indoor controller abnormality is detected the outdoor unit will stop operation and the check mode will start For the check mode details see page 45 If a protective function works the compressor will stop running Three minutes later the compressor will restart If the pro tective function works again the compressor will stop running and the check mode will start The protective function is memorized The memory is cleared when the POWER ON OFF button on the remote controller is turned OFF However the check mode dispaly continues until the outdoor unit receives the operation ON command from the indoor unit 3 4 COOL HEAT operation time chart Thermostat Compressor Crankcase heater with jumper wire J3 Crankcase heater without jumper wire J3 4 way valve COOL 4 way valve HEAT Bypass valve Outdoor fan
96. troller i 3 cable 6 1 Remote controller Indoor unit Max length of each cable is 10m 6 3 Dimensions Unit mm Fig 4 B 4Fixing screw holes 5 5 120 69 Eee 7 SPACE PANEL Part No PAC SE01AS E Applied Service Ref PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC 750 42 ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZzZzz aT 20 i A 4 n 4 E Du 1 deo dapes iila 8 WIDE PANEL Part No PAC SEO6WP E Applied Service Ref PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC 9 AIR OUTLET SHUTTER PLATE Part No PAC SF38SP E Applied Service Ref PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC 440 122 DER 99 J 65 k 42 70 10 MULTI FUNCTIONAL CASEMENT Part No PAC SE21TM E Applied Service Ref PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC Parts included Screw with Tapping Casement Washer Duct flange SUN Hook Band 1 pc 4 pcs 1 pc 6 pcs 2 pcs 1 pc M5xX0 8X15 4X10 LN a fw 11 HIGH EFICIENCY FILTER ELEMENT Part No PAC SE13KF E Applied Service Ref PLH 1 6KKHC PLH 2KKHC PLH 2 5KKHC 71 Mic SUM s MITSUBISHI ELECTRIC C
97. vice Ref PLH 1 6KKHC Function Cooling Heating Capacity 15 000 15 900 20 600 4 400 4 650 6 050 Total input 1 59 1 51 3 20 INDOOR UNIT Service Ref PLH 1 6KKHC Power supply phase cycle voltage Single 50Hz 220 240V Input 0 15 0 10 1 50 Running current 0 64 0 45 6 28 Starting current 0 70 0 50 6 91 External finish Galvanized sheets with gray heat insulation Heat exchanger Plate fin coil Fan drive x No Turbo fan direct x 1 Fan motor output kW 0 030 Airflow Low High m min CFM 13 16 460 565 External static pressure mmAq Pa O direct blow Booster heater 1 4 Operation control amp Thermostat Remote controller amp built in Noise level Low High 32 37 Cond drain conn O D 32 1 1 4 UNIT 660 2 PANEL 760 30 Dimensions 26 UNIT 660 26 PANEL 760 30 10 Weight kg Ibs UNIT 253 10 PANEL 30 1 1 8 UNIT 19 42 20 44 PANEL 3 7 8 3 7 8 OUTDOOR UNIT Service Ref PUH 1 6VKAz2 Power supply phase cycle voltage Single 50Hz 220 240V Input 1 44 Running current 6 74 Starting current 33 External finish Munsell 5Y 7 1 Refrigerant control Capillary tube Compressor Hermetic Model RH247VFC Motor output 1 2 Starter type
98. will display this occurrence When both of the following conditions are satisfied the drain sensor is determined to be under water Though the drain sensor has been heated by the drain sensor heater for more than 40 seconds its temperature rise is less than 20 degrees The drain sensor temperature is below 63 C 6 Dew prevention heater To prevent dew from accumulating on the grill the dew prevention heater is continuously ON during COOL operation It is independant of the thermostat ON OFF 25 O 2 2 DRY operation lt How to operate gt Press POWER ON OFF button Press the 11940 button to display file SUIT CENTRALLY CONTROLLED 60 Gt BK E 880 1 y CHECK NODE L nn 4 ll sexy 89 c 8888 ke el powvorr o Press the E TEMP button to set the desired temperature NOTE The set temperature changes 1 C when the C lt or button is pressed one time Dry 19 to 30 C 6 6 6 Sal Sauter ceca iC U DC 0 est CHECK CADICAD TEMP TIMER SET TEST RUN RENOTE CONTROLLER DRY operation time chart gt Operation starts by POWER button Room temperature becomes equal to Room temperature rises above set Operation stops by POWER button ON set temperature temperature OFF UE 1 Thermostat OFF

TECHNICAL & SERVICE MANUAL Ceiling

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TECHNICAL &amp; SERVICE MANUAL Ceiling

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TECHNICAL & SERVICE MANUAL Ceiling