Mitsubishi Electric PLH Series Page 1 Technical & Service Manual Download

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TECHNICAL & SERVICE MANUAL

SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS

CONTENTS

1. FEATURES ···········································3

2. PART NAMES AND FUNCTIONS ········5

3. SPECIFICATIONS·································7

4. DATA ···················································11

5. OUTLINES AND DIMENSIONS··········15

6. WIRING DIAGRAM·····························18

7. REFRIGERANT SYSTEM DIAGRAM ······19

8. OPERATION FLOW-CHART ··············20

9. MICROPROCESSOR CONTROL·······24

10. TROUBLESHOOTING ························47

11. 4-WAY AIR FLOW SYSTEM ···············55

12. SYSTEM CONTROL ···························60

13. DISASSEMBLY PROCEDURE ···········65

14. PARTS LIST ········································68

15. OPTIONAL PARTS ·····························78

[Model names]

PLH-3GK(H)B
PLH-4GK(H)SB
PLH-5GK(H)SB
PLH-6GK(H)SB

No. OC148

1997

This manual does not cover the following
outdoor units. When servicing them,
please refer to the service manual
No.OC150 and this manual in a set.
[Service Ref.]
PUH-3YKA

.UK

PUH-3VKA

.UK

PUH-4YKSA

.UK

PUH-5YKSA

.UK

PUH-6YKSA

.UK

INDOOR UNIT

Ceiling Cassettes

Series PLH

FILTER

CHECK MODE

TEST RUN

REMOTE CONTROLLER

The Slim Line.
From Mitsubishi Electric.

[Service Ref.]

PLH-3GK(H)B

.UK

PLH-4GK(H)SB

.UK

PLH-5GK(H)SB

.UK

PLH-6GK(H)SB

.UK

Summary of Contents for PLH Series

Page 1: ...MBLY PROCEDURE 65 14 PARTS LIST 68 15 OPTIONAL PARTS 78 Model names PLH 3GK H B PLH 4GK H SB PLH 5GK H SB PLH 6GK H SB No OC148 1997 This manual does not cover the following outdoor units When servicing them please refer to the service manual No OC150 and this manual in a set Service Ref PUH 3YKA2 UK PUH 3VKA2 UK PUH 4YKSA2 UK PUH 5YKSA2 UK PUH 6YKSA2 UK INDOOR UNIT Ceiling Cassettes Series PLH FI...

Page 2: ......

Page 3: ...roper ventilation is important to improve the quality of indoor environments lt eliminates unclean air which is not only unpleasant but also unhealthy The Mr SLM LOSSNAY ventilation interlocking system achieves high air quality with minimum energy consumption LOSSNAY s unique total heat exchanger reduces heating and cooling expenses by about 25 percent annually in compari son with our exisiting mo...

Page 4: ... out a wide range of operations 2 Attractive liquid crystal display LCD The unit s operation mode set temperature room temperature timer setting fan speed louver oper ation and air flow direction are displayed on the remote controller s easy to read Liquid Crystal Dis play LCD 3 Convenient 24 hour ON OFF timer The timer switches Mr SLIM on and off automati cally at the time you set Once the timer ...

Page 5: ... nomal operation This button does not operate in this model button This switches the horizontal fan motion ON and OFF FILTER button This resets the filter service indica tion display ON OFF button This switches between the operation and stop modes each time it is pressed The lamp on this butoon lights during operation button This adjusts the vertical angle of the ventilation button This sets the v...

Page 6: ... when the standby mode is set from the time the sleep operation starts until the heating air is discharged DEFROST display This indicates when the defrost oper ation is performed CHECK display This indicates when a malfunction has occurred in the unit which should be checked display This lamp lights when electricity is supplied to the unit display This displays the selected setting temperature dis...

Page 7: ... W kW kW A A kW K min CFM Pa mmAq kW dB A mm in mm in mm in mm in kg lbs kW A A kW kW K min CFM dB A mm in mm in mm in kg lbs kg lbs mm in mm in PLH 3GK H B UK Cooling 26 300 7 700 3 31 Heating 28 700 35 800 8 400 10 500 3 10 5 20 0 16 0 72 1 00 0 16 2 26 0 72 9 5 1 00 9 8 UNIT 820 32 1 4 UNIT 820 32 1 4 UNIT 258 10 1 8 UNIT 29 64 PANEL 950 37 3 8 PANEL 950 37 3 8 PANEL 65 2 9 16 PANEL 7 16 3 15 1...

Page 8: ...NT PIPING Item Service Ref Btu h W kW kW A A kW K min CFM Pa mmAq kW dB A mm in mm in mm in mm in kg lbs kW A A kW kW K min CFM dB A mm in mm in mm in kg lbs kg lbs mm in mm in PLH 4GK H SB1 UK Cooling 33 100 9 700 3 46 Heating 35 500 44 400 10 400 13 000 3 45 6 05 0 26 1 18 1 50 0 26 2 86 1 18 12 0 1 50 12 3 UNIT 1340 52 3 4 UNIT 820 32 1 4 UNIT 258 10 1 8 UNIT 45 99 PANEL 1470 57 7 8 PANEL 950 3...

Page 9: ...NG Item Service Ref Btu h W kW kW A A kW K min CFM Pa mmAq kW dB A mm in mm in mm in mm in kg lbs kW A A kW kW K min CFM dB A mm in mm in mm in kg lbs kg lbs mm in mm in PLH 5GK H SB1 UK Cooling 42 300 12 400 4 49 Heating 45 700 56 000 13 400 16 400 4 44 7 44 0 28 1 27 1 50 0 28 3 28 1 27 13 8 1 50 14 0 UNIT 1340 52 3 4 UNIT 820 32 1 4 UNIT 258 10 1 8 UNIT 45 99 PANEL 1470 57 7 8 PANEL 950 37 3 8 ...

Page 10: ...ING Item Service Ref Btu h W kW kW A A kW K min CFM Pa mmAq kW dB A mm in mm in mm in mm in kg lbs kW A A kW kW K min CFM dB A mm in mm in mm in kg lbs kg lbs mm in mm in PLH 6GK H SB1 UK Cooling 46 100 13 500 5 03 Heating 54 300 64 500 15 900 18 900 4 88 7 88 0 30 1 36 1 50 0 30 3 30 1 36 13 9 1 50 14 0 UNIT 1340 52 3 4 UNIT 820 32 1 4 UNIT 258 10 1 8 UNIT 45 99 PANEL 1470 57 7 8 PANEL 950 37 3 8...

Page 11: ...800 11 482 12 167 12 969 13 806 14 679 13 246 14 119 15 031 15 981 P C 2 65 2 71 2 76 2 81 2 77 2 83 2 88 2 94 3 60 3 67 3 74 3 81 4 03 4 11 4 19 4 27 CA 7 768 8 271 8 779 9 293 9 786 10 419 11 060 11 707 12 510 13 319 14 138 14 965 13 619 14 501 15 392 16 293 20 Outdoor intake air DB C 25 30 35 40 P C 3 84 3 94 4 07 4 23 4 02 4 12 4 26 4 43 5 21 5 35 5 53 5 74 5 84 5 99 6 19 6 43 CA 5 995 6 442 6...

Page 12: ...4 2 69 3 03 3 26 3 46 3 33 3 59 3 81 CA 5 752 5 508 5 293 7 122 6 820 6 554 9 177 8 787 8 444 10 889 10 426 10 020 10 Outdoor intake air DB C 5 0 5 10 15 Indoor intake air WB C 15 20 25 15 20 25 15 20 25 15 20 25 Service Ref PLH 3GK H B1 UK PLH 4GK H SB1 UK PLH 5GK H SB1 UK PLH 6GK H SB1 UK Refrigerant piping length one way 5m 1 00 1 00 1 00 1 00 10m 1 00 1 00 1 00 1 00 15m 1 00 1 00 1 00 1 00 20m...

Page 13: ... 27 4 86 56 36 PLH 4GK H SB1 UK Cool 9 600 3 45 0 26 1 18 1 5 3 19 5 23 39 Heat 10 300 12 700 3 44 5 84 0 26 2 66 1 18 11 6 1 5 11 9 3 18 5 22 39 PLH 5GK H SB1 UK Cool 12 300 4 48 0 28 1 27 1 5 4 20 7 05 51 Heat 13 250 16 010 4 43 7 18 0 28 3 03 1 27 13 2 1 5 13 5 4 15 6 97 51 PLH 6GK H SB1 UK Cool 13 400 4 99 0 30 1 36 1 5 4 69 7 87 71 Heat 15 700 18 450 4 87 7 62 0 30 3 05 1 36 13 3 1 5 13 5 4 5...

Page 14: ... 1 18 1 18 PUH 4YKSA2 UK 3 50 415 Cooling 12 400 4 49 Heating 13 400 4 44 6 89 1 88 19 2 0 48 7 96 79 7 49 8 5 1 5 27 19 13 2 35 24 0 74 0 13 6 81 1 88 19 2 0 37 3 77 83 8 1 4 5 20 15 42 3 7 6 1 27 1 27 PUH 5YKSA2 UK 3 50 415 Cooling 13 500 5 03 Heating 15 900 4 48 7 74 1 76 18 0 0 46 4 69 78 4 46 9 4 4 5 27 19 12 4 35 24 0 70 0 11 7 50 1 79 18 3 0 37 3 77 81 3 1 0 5 20 15 42 9 7 6 1 36 1 36 PUH 6...

Page 15: ... vane Air outlet hole Air outlet hole 587 23 1 8 587 23 1 8 Air intake grill 53 2 3 32 80 3 5 32 587 23 18 Air outlet hole 950 23 1 8 Vane motor Wiring arrangement opening side 950 37 13 32 80 3 5 32 53 2 3 32 Refrigerant piping side High efficiency filter option 175 6 7 8 245 245 9 21 32 65 2 9 16 135 5 5 16 363 14 9 32 433 17 1 16 45 1 25 32 Wiring arrangement opening side Intake grille opening ...

Page 16: ...f the insulation here Leave this bar ring hole Intake grill opening closing side Factory setting Air intake grill 80 35 1 3 8 75 2 15 16 55 2 5 32 Inspection hole drain water lift up mechanism Refrigerant pipe 19 05 mm dia flared connection 3 4F flared connection 3 8F 62 2 7 16 160 6 5 16 220 8 21 32 250 9 27 32 Refrigerant pipe 9 52 mm dia A Drain pipie VP 25 connection High efficiency filter opt...

Page 17: ...17 Unit mm 2 REMOTE CONTROLLER 18 130 Rear side wiring arrangement opening 120 FILTER CHECK MODE TEST RUN FILTER CHECK MODE TEST RUN 46 83 5 SW18 SW17 CAUTION ...

Page 18: ...F 1 2 is connected with 230 240V power If 220V power is used change the dip switch SW5 1 B on the indoor con troller board showing fig w1 Indoor fan motor MF1 2 for 220V 2 Since the indoor transformer T is connected with 240V power if 220 230V power is used Change the wiring connection showing fig w2 3 Since the outdoor side electric wiring may change be sure to check the out door unit electric wi...

Page 19: ...lve Strainer 4 way valve Oil separator Service port Service port Outdoor unit Outdoor heat exchanger Thermistor TH3 Capillary tube Restrictor valve Strainer Bypass valve Compressor Accumulator Ball valve with service port Refrigerant pipe option 9 52mm 3 8 with heat insulator Capillary tube Restrictor valve Distributor with strainer Thermistor RT2 Strainer Flared connection O D 3 2 o I D 2 0 r820 ...

Page 20: ...OP Auxiliary heater OFF Compressor OFF Fan STOP Four way valve OFF MAIN OPERATION w1 In addition the centralized control and remote control can be operated w2 The modes which indicate the sources of trouble are listed below EO Signal transmitting receiving error P1 Room temperature thermistor malfunction P2 Indoor coil thermistor malfanction P4 Drain sensor malfunction P5 Drain overflow P6 Coil fr...

Page 21: ...coil temperature is 10 C or higher 3 minute time delay Coil frost prevention release Allowance period 6 minute time delay Allowance set 1 min continue Coil frost protection FAN speed LOW FAN speed LOW 5 min elapse Outdoor unit trouble COOLING OPERATION w8 When operation stops or changes to cooling or dry mode the auto vane turns to a horizontal angle If operation changes during auto vane SWING the...

Page 22: ...ble to set the fan speed with the remote controller DRY OPERATION DRY operation Four way valve OFF Initial dry operation Room tempereature is 18 C or lower During compressor ON Compressor thermostat ON Vane initial setting Vane setting notch 10 minute compressor OFF timer start Compressor OFF Fan STOP 3 minute time delay 10 minute compressor OFF Compressor ON time set Compressor ON Fan speed LOW 1...

Page 23: ...owance set Compressor OFF Indoor piping 35 C or higher HOT adjust 6 min elapse FAN SPEED Low FAN SPEED Low 2 min elapse FAN SPEED setting nitch Hot adjust release PLH GKV Type 3 minute Auxiliary heater OFF Indoor coil thermistor is 60 C or higher FAN speed Low notti Airflow 10 up FAN setting notch Auto COOL HEAT operation Initial mode T1 T0 COOL mode HEAT mode COOL mode T1 T0 3 After 15min T1 T0 2...

Page 24: ...T STOP Fan speed control Crankcase heater control ON OFF Self diagnostic function Independent Control of Outdoor Unit OUTPUT to indoor unit INPUT from indoor unit INPUT to remote controller Remote controller board Processes and transmits orders OUTPUT to remote controller Indoor controller board Receives orders from remote controller and temperature data from indoor unit Processes orders and data ...

Page 25: ...rt temperature of coil frost prevention changes from 1 C to 3 C How to operate 1 Press POWER ON OFF button 2 Press the button to display 3 Press the TEMP button to set the desired temperature NOTE Set temperature changes 1 C when the or button is pressed one time Cooling 19 to 30 C Minimum 3 minutes w1 ON Thermostat Indoor fan Auto vane Drain pump Booster heater Compressor ON ON LOW or HIGH Inital...

Page 26: ...a sudden rise in fan output the fan output rise is controlled by 1 step per 1 second i When the outdoor unit abnormality detection is released and the fan speed changes from LOW to the set speed the quiet cycle control will work 1 Start up of outdoor unit abnormality detec tion 2 Release of outdoor unit abnormality detec tion 3 Unit stop due to outdoor unit abnormality with P8 indication NOTE 1 Qu...

Page 27: ... operation in SWING mode can be changed to the fluctuant operation by turning ON the dipswitch SW1 2 iii When SWING mode is changed to STOP mode the airflow direction returns to the position of the last STOP mode When 55 45 degrees or 65 65 degrees airflow is selected with the LOW fan speed in COOL operation AUTO RETURN will appear below the temperature display One hour later the airflow direction...

Page 28: ...rature is more than 5 degrees below room tempetature 1 35 2 45 3 55 4 Discharge direction No 1 SW5 3 OFF SW5 3 ON No 2 65 20 35 45 65 No 1 setting SW5 3 OFF 50Hz No 2 setting SW5 3 ON 50Hz Discharge direction change Downward C Horizontal 4 1 Rise 3 3 Rise Horizontal Downward A 1 2 2 0 3 3 Downward B Downward C 3 4 2 3 3 7 Downward A Downward B 2 3 1 4 2 0 c Vane motor drive time Indoor coil temper...

Page 29: ...the room temperature rises above the set temperature during this period the compressor will not start until this period has ended 2 2 DRY operation 1 Compressor control 13 minute time delay To prevent overload the compressor will not start within 3 minutes after stop 2The compressor runs when the room temperature is higher than the set temperature The compressor stops when the room temperature is ...

Page 30: ...eration 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 The fluctuate operation will not work in DRY operation a During compressor OFF When the indoor coil temperature is 6 C or above the indoor fan will stop When the indoor coil temperature is below ...

Page 31: ... stops by POWER butt on OFF Room temperature becomes equal to set temperature Room temperature falls below set tem perature w2 Even if the room temperature falls below the set temperature during this period the compressor will not start until this period has ended HEAT operation time chart FILTER CHECK MODE TEST RUN How to operate 1 Press POWER ON OFF button 2 Press the button to display 3 Press t...

Page 32: ...e indoor 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 ...

Page 33: ...it 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 1 During compressor ON after hot adjustment 1 If the difference between the indoor coil temperature and room temperature is in the RANGE B the indoor fan will stop 2 Within 20 minutes after entering RANGE B except for the first 10 seconds a If the temp...

Page 34: ...mpera 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 returns 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 w1 RANGE A Indoor coil temperature is more tha...

Page 35: ...es below the set temperature 3 Temperature range AUTO operation is available under the outside air temperatures as follows Mode change HEAT COOL When room temperature becomes2degrees above the set temperature the operation mode can not be changed for 15 minutes degree To 2 To Set temperature 19 28 To 1 To To 1 To 2 Compressor Start HEAT mode HEAT mode Mode change 15 minutes Minimum 3 minutes 15 mi...

Page 36: ...ges to 35 20 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 button The airflow direction shifts to 35 20 regardless of the remote controller settings under any of the following conditions Thermostat OFF Defrosting Indoor fan speed EXT...

Page 37: ...ining time Timer setting example 2 6 TIMER operation OFF TEST RUN button TEST RUN Indoor coil temperature code Display Display Remote controller 1 Turn on main switch 12 hours before proceeding to step 2 to allow for crankcase heater operation 2 Push the TEST RUN button twice and indication of TEST RUN will be shown on the liquid crystal display 4 Push button LOW HIGH to check that the fan speed c...

Page 38: ...g release the protective function before starting the emergency operation CAUTION When the self diagnostic function indicates a check code of P5 drain pump malfunction DO NOT start the emergency operation because the drain may overflow How to operate 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 2 Turn ON the outdoor un...

Page 39: ...ay box PZ 12RB E LOSSNAY LOSSNAY LOSSNAY control switch PZ 05SLB2 E LOSSNAY control switch PZ 05SLB2 E Mr SLIM Mr SLIM Remote controller Remote controller Remote display adapter PAC SA88HA E Power supply Power supply Relay box Junction box field supplied LOSSNAY A B L N HIGH N Terminal block Terminal block Mr SLIM CN51 12V DC Mr SLIM 10m Insulation is needed Connecting wire 0 13mm or over Circuit ...

Page 40: ...auto vanes SW1 4 Switch for drain pump OFF The drain pump works in only COOL operation ON The drain pump works in both COOL and HEAT operation SW1 5 Switch to change the temperature to start coil frost prevention OFF 3 For previous special models ON 1 For all current models SW1 6 Switch for set temperature adjustment in HEAT mode During HEAT operation warm air collects near the ceiling When the in...

Page 41: ...ctor 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 Service Ref SW7 PLH 3GK H B1 UK PLH 4GK H SB1 UK PLH 5GK H SB1 UK 1 2 3 ON OFF 1 2 3 ON OFF PLH 6GK H SB1 UK 1 2 3 ON OFF 7 SWA High ceiling type switch High ceiling 2 High ceiling 1 Standard 8 SWB Discharge outlet number selector 2 di...

Page 42: ...eed after the hot adjustment NOTE The quiet cycle control does not work when the fan speed is lowered For further information refer to the description of each operation control 3 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 control turns OFF One second later the indoor fan relay will turn OFF 4 Fluctu...

Page 43: ...tective function works again the compressor will stop running and the check mode will start 3 The protective function is memorized 4 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 10 minutes 1 ON Thermos...

Page 44: ...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 ...

Page 45: ...lve at ON for more than 30 minutes the bypass valve turns OFF 3When the compressor stops with the bypass valve at OFF the bypass valve turns ON and remains ON for three min utes w PUH 6YKSA s bypass valve cannot open or close during cooling mode therefore the paragraph 1 3 cannot be applied to the PUH 6YKSA Heating mode 1When the unit starts for the first time after the circuit breaker has been tu...

Page 46: ...again 2SW3 setting is changed 3The compressor stops 4Defrosting 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 48 4 100 fan output Fan o...

Page 47: ...ars soon 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 1 2 Check the wire 3 Measure the resistance of the drain sensor connector CN50 1 3 Normal resistance should be 82Ω 4 Turn the circuit breaker OFF and then turn ON If the ...

Page 48: ...troller to advance or go back to the unit address Each time TEMP button is pressed the unit address advances by one Each time 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...

Page 49: ...d P5 Malfunction of drain pump 1 Malfunction of drain pump 2 Damaged drain sensor 1 Check the drain pump 2 Check the drain sensor Check the drain sensor heater Normal resis tance should be 82Ω If the resistance is normal replace the indoor con troller board P6 Coil frost protection is work ing 1 Short cycle of air cycle 2 Dirty air filter 3 Damaged fan 4 Abnormal refrigerant 1 Clear obstructions f...

Page 50: ... 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 Changed alternately by pressing SW2 wRegarding PUH 6YKSA1 eventhough the LD7 is blinking during the cooler operation the bypass valve cannot open Check code Output state Outdoor coil temperature bit Fan Output step bit Total time of compresso...

Page 51: ...ressor operation time indication SW2 is not available 3 4 Check code indication When a protection function works 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 com...

Page 52: ...n 51C was connected incor rectly 51C was working Check 51C the compressor and power supply LD6 Thermal switch 26C function 26C was connected incor rectly 26C is working Check 26C Check if refrigerant supply is low Check if the capillary tube is clogged LD7 Over heat protection The thermistor is broken Coil temperature is over 67 C Measure the resistance of the thermistor Check the outdoor fan moto...

Page 53: ...ps 9 minutes later check code P8 appears on remote controller display HEAT OFF Operation stops ON Operation stops 27 minutes later check code P8 appears on remote controller display Outdoor Indoor 1 2 3 1 2 3 COOL OFF Outdoor unit stops ON Operation stops 9 minutes later check code P8 appears on remote controller display HEAT OFF Operation stops ON Operation stops 27 minutes later check code P8 ap...

Page 54: ...troller board deems the auto vanes are not attached to the unit Horizontal anlgle can not be detected 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 Indoor outdoor connect ing wire is connected incorrectly Indoor outdoor connect ing wire shorts Compressor protector is damage...

Page 55: ...ts on the widthwise side fully closed Factory setting standard Install the insulation 4 furnished in this kit and close it fully Factory setting standard Closing one lengthwise direction Install the insulation 4 furnished in this kit and close it fully The remaining three directions must remain standard Install the insulation 4 furnished in this kit and close it fully The remaining three direction...

Page 56: ...ned here Unit piping side Unit piping side PLH 4 6GK H SB1 UK Air outlet Location of knockout holes for fresh air intake Fig 3 Machining of knockout holes Fig 4 Installation of duct flange 1 0 0 3 1 5 1 6 d i a S t e e l p l a t e 1 3 0 5 1 8 d i a I n s u l a t i o n m a t e r i a l Remove these two parts mm in Duct flange Insulation material Through hole Screws 4o10 4 pieces For the lengtwise si...

Page 57: ...sh air intake dust system for air flow amount Q Pa E Static pressure of indoor unit with air flow amount Q Qa Estimated amount of fresh air intake with out D m3 min Pa Pa Pa Pa Pa How to read curves 3 3 Interlocking operation method with duct fan Booster fan Whenever the indoor unit is operating the duct fun also operates 1 Connect the optional multiple remote controller adapter PAC SA88HA E to th...

Page 58: ...ch Duct 100 820 750 900 450 340 Branch Duct 100 820 Branch Duct 100 820 PLH 3GK H B1 UK PLH 4 6GK H SB1 UK 4 direction discharge 3 direction discharge 2 direction discharge 2 Branch duct characteristics Air flow amount of PLH GK H B UK can be adjusted according to ceiling height and the number of air outlets with the air flow amount switches SWA and SWB Since the characteristics curves on the righ...

Page 59: ... PLH 5GK H SB1 UK Static pressure Pa 0 10 20 30 40 50 60 70 5 10 15 20 Air flow m min 3 Hi Lo 750mmo1 directions 340mmo2 directions PLH 6GK H SB1 UK Static pressure Pa 0 10 20 30 40 50 60 1 2 3 4 5 6 Air flow m min 3 Hi Lo 340mmo3 directions PLH 3GK H B1 UK Static pressure Pa 7 8 0 10 20 30 40 50 60 70 5 10 15 20 Air flow m min 3 Hi Lo 750mmo2 directions PLH 4GK H SB1 UK Static pressure Pa 0 10 20...

Page 60: ... CENTRALLY CON TROLLED is displayed on the LCD of the remote con troller This is available for both one unit control and several units control 4 Individual control by grouping remote controllers See page 63 Unit Remote controller Unit Unit By grouping the remote controllers in one place several units installed at different locations can be controlled indi vidually and operation conditions of all u...

Page 61: ...or 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 set the master No 0 unit 2 3 Unit control T...

Page 62: ...s If one of the remote con trollers is used for the self diagnostic function the other remote controller displays the check mode If the self diagnostic function is reset by either of the two remote controllers both remote controllers are reset 4 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...

Page 63: ...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 th...

Page 64: ...mps Matching to power supply voltage CN51 connector 5P GREEN Power supply Electrical insulation is needed Wiring at the actual place Optional multiple display adapter The maximum distance between indoor board and relay is 10m YELLOW ORANGE RED BROWN 5 X1 X1 RL GL X2 X2 1 Wiring CN51 Power supply Remote controller cable Relay box Field supply Remote controller Remote controller Remote controller 3w...

Page 65: ...hermistor from the holder 5 Remove 2 of 4 screws from the bell mouth and loosen the other 2 screws 6 Remove the bell mouth 7 Remove 1 of 3 screws from the electrical box and loosen the other 2 screws 8 Disconnect the connectors and pull out the electrical box Electrical parts in the electrical box Indoor controller board Transformer Relay Only PLH 3GK H B1 4GK H SB1 5GK H SB1 6GK H SB1 Terminal bl...

Page 66: ...f the service panel 5 Holding the knob remove the service panel 6 Remove the 4 screws of the drain pump 7 Remove the hose connecting nut 8 Remove the drain pump 9 Remove the screw of the drain sensor holder 10 Remove the holder and the drain sensor 11 Remove the indoor coil thermistor from the holder attached to the copper pipe Photo 8 Photo 7 Photo 6 4 Remove the fan motor 1 Remove the fan guard ...

Page 67: ...e heater and the heater support 8 Remove the coil support A and B 9 Remove the coil set screw 10 Remove the 4 screws of the pipe cover on the outer wall 11 Remove the 2 pipe covers 12 Remove the pipe band screw 13 Remove the 4 screws of coil on the outer wall Photo 10 7 Removing the panel 1 Disconnect the connector 2 Remove 2 of 4 screws of the panel and loosen the other 2 screws 3 Slide the panel...

Page 68: ...nt Price 1 2 3 4 5 6 7 8 AIR OUTLET GRILLE AIR FILTER INTAKE GRILLE HANGER G GRILLE CATCH FILTER CATCH SHUTTER PLATE PANEL SCREW PANEL 1 1 1 1 2 2 1 1 T7W 700 003 R01 W28 500 R01 W28 691 R01 W28 098 R01 W28 054 R01 029 054 R01 W28 083 R01 W28 673 PANEL PARTS PLH 3GKHB UK PLH 3GK H B1 UK Part numbers that are circled are not shown in the figure 1 2 3 6 5 5 ...

Page 69: ...unt Price 1 2 3 4 5 6 7 8 9 AUTO VANE 2 AUTO VANE 3 AIR GUIDE 1 AIR GUIDE 2 AIR GUIDE 3 AIR GUIDE 4 VANE MOTOR VANE JOINT VANE BUSHING 2 2 1 1 1 1 1 4 8 MV R01 W29 002 R01 W30 002 R01 W28 085 R01 W28 086 R01 W28 087 R01 W28 088 T7W 700 223 R01 W28 063 R01 W28 064 PANEL PARTS PLH 3GKHB UK PLH 3GK H B1 UK 9 9 9 9 8 8 8 7 2 9 5 4 1 9 9 2 6 8 3 ...

Page 70: ... G GRILLE CATCH FILTER CATCH SHUTTER PLATE PANEL SCREW PANEL 1 2 2 2 4 4 1 1 1 2 2 2 4 4 1 1 1 2 2 2 4 4 1 1 T7W 800 003 R01 W50 500 R01 W50 691 R01 W28 098 R01 W28 054 R01 029 054 R01 W50 083 R01 W28 673 GKHSB UK GK H SB1 UK PANEL PARTS PLH 4GKHSB UK PLH 5GKHSB UK PLH 6GKHSB UK PLH 4GK H SB1 UK PLH 5GK H SB1 UK PLH 6GK H SB1 UK Part numbers that are circled are not shown in the figure 1 6 2 5 5 4...

Page 71: ...Remarks Drawing No Wiring Diagram Symbol Recom mended Q ty Unit Amount Price 1 2 3 4 5 6 7 8 9 10 11 AUTO VANE L1 AUTO VANE L2 AUTO VANE 2 AUTO VANE 3 AIR GUIDE L1 AIR GUIDE L2 AIR GUIDE 3 AIR GUIDE 4 VANE MOTOR VANE JOINT VANE BUSHING 1 1 1 1 1 1 1 1 1 4 8 1 1 1 1 1 1 1 1 1 4 8 1 1 1 1 1 1 1 1 1 4 8 MV R01 W50 002 R01 W51 002 R01 W29 002 R01 W28 002 R01 W50 085 R01 W50 086 R01 W28 087 R01 W28 088...

Page 72: ...72 FUNCTIONAL PARTS PLH 3GKHB UK PLH 3GK H B1 UK 6 2 5 6 4 33 1 3 6 32 34 7 8 9 14 15 19 20 24 22 23 36 26 30 31 21 29 28 35 13 12 11 10 16 17 18 25 37 ...

Page 73: ...FAN GUARD SENSOR HOLDER 1 1 1 1 1 4 3 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 1 1 1 1 1 1 1 1 1 4 3 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 1 1 1 1 1 1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 1 1 1 1 BG00C305G21 BG00A102G09 BG00A101G08 DB00H01G02 BG25B226H03 BG00C321G79 BG00D220G21 BG00D221G11 MF1 H1 H1 FS1 2 26H RT2 DP DS TB2 TB4 TB5 88H T C1 I B F I B RT1 R ...

Page 74: ...L PARTS PLH 4GKHSB UK PLH 5GKHSB UK PLH 6GKHSB UK PLH 4GKHSB1 UK PLH 5GKHSB1 UK PLH 6GKHSB1 UK 8 9 10 36 4 6 5 7 2 7 35 34 35 4 1 3 7 15 16 32 33 37 26 37 28 31 30 38 14 11 12 13 17 18 19 20 21 23 24 25 22 27 39 6 ...

Page 75: ... 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 6 2 2 1 1 1 1 1 2 2 2 4 3 2 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 6 2 2 1 1 1 1 1 2 2 2 4 3 2 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 6 2 2 1 1 1 1 1 2 2 2 4 3 2 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 6 2 2 1 1 1 1 1 2 2 2 4 3 2 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 6 2 2 1 1 BG00C305G22 BG00A102G09 BG00A101G08 B...

Page 76: ...76 FUNCTIONAL PARTS PLH 4GKSB1 UK PLH 5GKSB1 UK PLH 6GKSB1 UK 32 4 6 5 7 2 7 31 30 31 4 1 3 7 12 13 28 29 33 22 33 24 27 26 34 11 8 9 10 14 15 16 17 19 20 21 18 23 35 6 ...

Page 77: ...LEG RUBBER MOUNT SPL WASHER FAN GUARD DRAIN PLUG SENSOR HOLDER 1 1 1 2 2 2 4 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 6 2 2 1 1 1 1 1 2 2 2 4 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 6 2 2 1 1 1 1 1 2 2 2 4 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 6 2 2 1 1 BG00C305G22 BG00A102G09 BG00A101G08 BG00C324G07 DB00H010G02 BG25B226H03 BG00C321G50 BG00C321G40 BG00D220G21 BG00D221G11 MF1 2 R...

Page 78: ...night 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 1 REFRIGERANT PIPES Service Ref PLH 3GK H B1 UK Service Ref PLH 4GK H SB1 UK PLH 5GK H SB1 UK PLH 6GK H SB1 UK 2 TIMER When using a program timer a program timer adapter PAC 82...

Page 79: ...ack 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 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 Push SW to advance the time Each t...

Page 80: ...the accessory remote con troller DUAL Instructions from both the accessory remote controller and the centralized remote controller are valid Priority given to the last instruction received CENTRAL ON OFF switching by the accessory remote controller is invalidated Control is by the centralized remote controller only Initial setting is DUAL LCD Matrix Display This display indicates the operational s...

Page 81: ...8 9 10 10 9 8 7 6 5 4 3 2 1 Dip switch SW17 Centralized remote controller Power supply board 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 As is the GND terminal be sure to ground the earth wire 2 Connect the transmission line to the t...

Page 82: ...1 Terminal block for transmission to program timer or centralized remote controller B W 200 5A L POWER SUPPLY N POWER SUPPLY CORD Fuse 5A Tie wrap Wiring has to be changed when 200V power supply is used Tie wrap Transmission cord TRANSFORMER TERMINAL BLOCK FOR POWER SUPPLY TERMINAL BLOCK FOR TRANSMISSION SW1 CN22 CN1 CN21 CN51 CN30CN42 CN50 CN40 AG TRANS 220 240 1 Connections in the adapter box 1 ...

Page 83: ...220 22 35 120 12 30 200 2x2holes 2 9 74 7 8 Fig 4 Unit mm 3 Connections from adaptor 6 3 Dimecsions Part No PAC SB48AF E PAC SB49AF E Applicable Service Ref PLH 3GK H B1 UK PLH 4 5 6GK H SB1 UK Part No PAC SB52KF E PAC SB53KF E Applicable Service Ref PLH 3GK H B1 UK PLH 4 5 6GK H SB1 UK Part No PAC SB50AM E PAC SB51AM E Applicable Service Ref PLH 3GK H B1 UK PLH 4 5 6GK H SB1 UK 9 FRESH AIR INTAKE...

Page 84: ...MARUNOUCHI TOKYO100 TELEX J24532 CABLE MELCO TOKYO Copyright 1997 MITSUBISHI ELECTRIC ENGINEERING CO LTD Issued in Jun 1997 No OC148 560 Printed in Japan New publication effective Jun 1997 Specifications subject to change without notice ...

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