Mitsubishi PCH-2.5- Manuals

8 3 DATA 1. PERFORMANCE DATA 1) COOLING CAPACITY<1> PCH-2GKA Outdoor intake air ° C DB 20 25 30 Indoor Intake air ° C DB Indoor Intake air ° C WB 20 20 20 22 22 22 24 24 24 24 26 26 26 26 27 27 27 27 28 28 28 28 30 30 30 30 32 32 32 32 16 18 20 16 18 20 16 18 20 22 16 18 20 22 16 18 20 22 16 1...

22 4. STANDARD OPERATION DATA Rating Conditions (JIS B8616) Electrical circuit Total Refrigerant circuit Indoor side Outdoor side Capacity Input Indoor unit Service Ref. Phase, Hz Volts Amperes Outdoor unit Service Ref. Phase, Hz Volts Amperes Discharge pressure Suction pressure Discharge temperatur...

23 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROTIMATETERESHOLD OFREARING FORCONTINUOUSNOISE NC-60 NC-50 NC-40 NC-30 NC-20 NC-70 OCT A VE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR BAND CENTER FREQUENCIES, Hz PCH-2GKA Hi Lo NOTCH 42 37 SPL(db (A) ) LINE 90 80 70 60 50 40 ...

25 4 1. INDOOR UNIT PCH-2GKA-E 180 210 157 15 85 182 (3/8F) liquid 201 (5/8F) gas 241 (Drainage) Air intake 918 254 680 Electrical box 226 70 525 928 352 263 171 138 86 175 131 38 79 38 161 32 179 42 6~7 Celling Electrical box [Front view] When electrical box is pulled down 3 2 8 5 1 4 6 2 7 17 150 ...

30 WIRING DIAGRAM 5 PCH-2GKA-E/PCH-2.5GKA-E/PCH-3GKA-EPCH-4GKSA-E/PCH-5GKSA-E/PCH-6GKSA-E 240V 230V 220V 230V 220V YELLOWORANGERED 1 ONOFF 2 3 4 ONOFF [Emergency operation procedure] (1) Turn on the outdoor unit side circuit breaker, then indoor unit side circuit breaker in this order.(2) During eme...

31 6 REFRIGERANT SYSTEM DIAGRAM Indoor unit Indoor heat exchanger Refrigerant pipe (option) 15.88 mm ( 5/8") (with heat insulator) Flexible tube Ball valve Strainer 4-way valve Oil separator Service port Service port High pressure control switch High pressure protect switch Outdoor unit Outdoor ...

32 OPERATION FLOW-CHART 7 START Power circuit breaker Check SW ON twice Operation SW ON “OFF” timer “ON” timer STOP Set time complete Set time complete 1 NO NO NO NO NO NO NO NO NO NO NO NO YES w 1 YES YES YES YES YES YES YES YES YES YES YES PROTECTION DEVICE SELF HOLD RELEASE Remote controller indi...

33 COOL operation Four-way valve/OFF Initial COOLING NO NO NO NO NO NO YES YES YES YES YES YES NO YES YES YES YES YES YES YES YES YES YES YES NO NO NO NO YES NO NO NO NO NO NO NO NO NO w 8 w 9 Vane initial setting Vane 40 deg downward angle 60 deg downward angle Fan speed LOW Downward discharge 1 ho...

35 w 8—9 Refer to page 41. w 12 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. w 13 Compressor ON time is decided by room temperature. Refer to page 41. w 14 In dry operation, compressor ...

36 MICROPROCESSOR CONTROL 8 ● Compressor and outdoor fan : ON-OFF ● Operation mode change :COOL-HEAT. 1.OUTLINE OF MICROPROCESSOR CONTROL ● OFF-ON switching. ● COOL/DRY-AUTO-HEAT selector switching. ● Thermostat setting. ● TIMER mode selector-switching and Timer setting. ● HIGH-LOW fan speed switchi...

37 2. INDOOR UNIT CONTROL 2-1COOL operation (1) Compressor control 1 3-minute time delay To prevent overload, the compressor will not start within 3 minutes after stop. 2 The compressor runs when room temperature is higher than set temperature. The compressor stops when room temperature is equal to ...

40 <Auto vane drive> (a) The auto vane is driven by DC12V motor.(b) Airflow direction is selected depends on the number of pulse were sent.(c) Before start driving the auto vane, detect the standard position first, output the number of pulse to each airflow. (d) The speed of the auto vane driv...

41 <DRY operation time chart> ON Thermostat Indoor fan Auto vane Drain pump (OPTIONAL) Compressor ON ON Low speed LOW speed ON OFF OFF 3 minutes OFF OFF Operation starts byP O W E R b u t t o nON. Operation stops byP O W E R b u t t o nOFF. Room temperaturebecomes equal toset temperature. Room...

43 <HEAT operation time chart> ON Thermostat Indoor fan Auto vane Drain pump(OPTINAL) Compressor ON ON LOW or HIGH LOW or HIGH ON OFF OFF OFF OFF OFF Power ON lamp ON OFF STAND BY lamp ON OFF Operation starts byP O W E R b u t t o nON. Operation stops byP O W E R b u t t o nOFF. Room temperatu...

46 (5) 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. ● When the temperature differenc...

47 2-4 AUTO operation (Automatic COOL/HEAT change over operation) (1) Initial mode 1 When AUTO operation starts after unit OFF. ● If the room temperature is higher than the set temperature, operation starts in COOL mode. ● If the room temperature is equal to or lower than the set temperature, operat...

48 <How to operate>To change the air flow direction, press button. NOTE: Vane angle can be change to upper angle by cutting off the J5-3. (Jumper resistance of indoor units) (1) COOL/DRY operation At the start-up of COOL or DRY operation, the airflow direction in automatically set to horizonta...

50 (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 roomtemperature. The code should fall with the lapse of time in normal COOL operation, and should rise in normal HEAToperation. (2) Trouble during t...

51 2-9 Interlock with ventilation system (LOSSNAY)Mr. SLIM/LOSSNAY interlock operation is available by using the optional parts listed below. (1) System organization NOTE: For further information, refer to the LOSSNAY technical & service manual. (2) LOSSNAY models connectable to Mr. SLIM are: LG...

52 2-10 Dip switch functions Each figure shows the initial factory setting. 1) On remote controller board(1) SW17(Address selector) SW17-1~6) For address settingSW17-7) When two remote controllers are used,this switch sets the controller function. OFF:The remote controller is set as a main controlle...

53 (2) SW2 (Address selector) Used insetting the unit-address for group control. (3) SW3 (Emergency operation switch) Normal operation For emergency cooling For emergency heating (4) J5 (Model selector emergency heating) J5-2) Provided : For models with heat pump. Not provided : For models without h...

54 2-11 INDOOR FAN CONTROL Each figure shows the initial factory setting. (1) Fan motor max. rotational frequency for PCH-GK(S)A-E (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 control turns O...

55 10 minutes 1 ON Thermostat Outdoor fan 4-way valve(COOL) 4-way valve(HEAT) Bypass valve Compressor Crankcase heater (with jumper wire J3) Crankcase heater (without jumper wire J3) ON ON ON ON OFF OFF OFF OFF OFF ON OFF ON OFF ON OFF 60 minutes 60 minutes 60 minutes 60 minutes 60 minutes 3 minutes...

58 3-7 Service functions(1) Compulsory defrosting 1 When all of the following conditions are satisfied, pressing SW2 starts the compulsory defrosting. ● During HEAT mode ● The compressor is ON. ● The outdoor coil temperature is being displayed by LED. (Outdoor controller board dip switch SW3-1 : OFF...

59 9 TROUBLESHOOTING Symptom Cause Check points The display “CENTRALLYCONTROLLED” on remotecontroller dose not disap-pear. 1) Wrong address setting of remote con- troller/indoor controller board. 2) Timer adapter is connected to the remote controller. 3) Signal transmission error between indoor unit...

60 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.(1) ON the set temperature display part, “CHECK” appears, and the unit...

3-3 Total time of compressor operation Compressor operation time is indicated in 256 hour units. To obtain the compressor operation time, add the hours of light-ing LED. During the compressor operation time indication, SW2 is not available. 3-4 Inspection code indication When the inspection code is ...

65 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 controllerwhen the POWER button is pressed. The beep sound will also not be heard. 6-2 Phenomenon due to wrong wi...

66 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 notoperating. Symptom LOSSNAY air speed can not be controlled in interlock opera-tion. LOSSNAY fan speed is fixed to HIGH during interlo...

67 1. Removing the air intake grille (1) Slide the intake grille holding knobs (at two locations) backward to open the intake grille. (2) When the intake grille left open, push the stoppers on the rear hinges (at two locations) to pull out the intake grille. 10 DISASSEMBLY PROCEDURE OPERATING PROCED...

68 Figure 4 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 3. Removing the fan motor (1) Remove the intake grill.(2) Disconnect the fan motor connector.(3) Unscrew screws for removing the motor guard.(4) Unscrew screws for removing the fan guard.(5) Remove the screw for removing the motor support at b...

69 OPERATING PROCEDURE PHOTOS 6. Removing the vane motor (1) Remove the air intake grill.(2) Remove the left side panel.(3) Remove the relay connector of vane motor.(4) Remove the electrical box.(5) Remove the screws of vane motor, then remove vane motor. (Note) Connect the lead wires and connectors...

70 OPERATING PROCEDURE PHOTOS 9. Removing the drain pan (1) Remove the air intake grill.(2) Remove the beam.(3) Remove the side panel (right and left).(4) Remove the under panel. Remove the screws of the right and left side drain pan. (5) Remove the insulation in centre of the drain pan, and after r...

72 11 PARTS LIST STRUCTURAL PARTPCH-2GKA-E 2 19 13 15 4 12 16 28 10 11 23 14 18 1 25 26 20 3 27 6 9 8 7 17 5 24

73 No. Parts No. Parts Name Specifications PCH-2 GKA-E Q'ty / set Remarks (Drawing No.) Wiring Diagram Symbol Recom- mended Q'ty Unit Amount Price MV (BG17H464H08) (BG02H454H04) (BG02R321G07) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 R01 17J 661 R01 17J 662 R01 17J 6...

83 12 OPTIONAL PARTS Note 1. How to connect refrigerant pipes. Factory supplied optional refrigerant pipings contain refrigerant at the above atmospheric pressures. As long as con-nection takes no more than 5 minutes, no air will enter, and there will be no need for air purging.Remove the blind caps...

HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100-8310 TELEX J24532 CABLE MELCO TOKYO c Copyright 1999 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD. Issued in Aug. 1999. No. OC191 541Printed in Japan New publication, effective Aug. 1999.Specifications subject to change without notice. 7.DRAIN PUMP Pa...