Page 3 - PART NAMES AND FUNCTION; Operation buttons; button
3 PART NAMES AND FUNCTION 1 ● Indoor (Main) Unit Air outlet Intake grille Air intake Left/right guide vanes Change the direction of airflowfrom the horizontal blower. Long-life filter Removes dust and foreign matter from air coming inthrough the grille (Recommended cleaning interval :Approx, every 2...
Page 4 - Caution; button and; Display
4 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, ...
Page 5 - SPECIFICATIONS
5 Munsell 0.70Y 8.59 / 0.97 Plate fin coil Function Total input Item Capacity INDOOR UNIT Service Ref. Power supply External finish Heat exchanger Fan Booster heater Operation control & Thermostat Noise level(Low-High) Unit drain pipe I.D. Dimensions Weight Service Ref. Power supply External fin...
Page 8 - DATA
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...
Page 22 - STANDARD OPERATION DATA; Indoor unit Service Ref.
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...
Page 23 - NOISE CRITERION CURVES
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 ...
Page 25 - OUTLINES AND DIMENSIONS
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 ...
Page 30 - WIRING DIAGRAM
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...
Page 31 - REFRIGERANT SYSTEM DIAGRAM
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 ...
Page 32 - MAIN OPERATION
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...
Page 33 - COOLING OPERATION
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...
Page 35 - DRY OPERATION
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 ...
Page 36 - MICROPROCESSOR CONTROL; OUTLINE OF MICROPROCESSOR CONTROL; OUTPUT to indoor unit; Remote controller board; OUTPUT to remote controller; Indoor controller board; OUTPUT to outdoor unit; Remote controller
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...
Page 37 - INDOOR UNIT CONTROL; Coil frost prevention; NOTE: Set temperature changes 1°C when the or
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 ...
Page 40 - (4) Detecting abnormalities in the outdoor unit; Close
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...
Page 41 - Press the; NOTE: The set temperature changes 1°C when the or
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...
Page 43 - button is pressed one time.
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...
Page 46 - (5) Indoor coil thermistor abnormality detection; RANGE A
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...
Page 47 - NOTE: The set temperature changes 1°C when the
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...
Page 48 - NOTE: Vane angle can be change to upper angle by cutting off the J5-3.; Thermostat OFF; -5 Auto vane control; Changes by pressing the button.
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...
Page 50 - -8 Emergency operation; the emergency operation because the drain may overflow.; Code 1 2 3 4 5 6 7 8
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...
Page 51 - NOTE: For further information, refer to the; When the LOSSNAY control switch is not used:
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...
Page 52 - -10 Dip switch functions; Each figure shows the initial factory setting.; ) On indoor controller board
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...
Page 53 - Used insetting the unit-address for group control.; Not provided : For models without heat pump.
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...
Page 54 - -11 INDOOR FAN CONTROL
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...
Page 55 - OUTDOOR UNIT CONTROL; -3 Protective functions; The protective function is memorized.
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...
Page 58 - (3) Function of switches on the outdoor controller board
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...
Page 59 - TROUBLESHOOTING; TROUBLES IN TEST RUN
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...
Page 60 - SELF DIAGNOSTIC FUNCTION WITH REMOTE CONTROLLER
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...
Page 63 - code is not displayed.; -1 Outdoor coil temperature
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 ...
Page 65 - WRONG WIRING ON SITE; -1 Between remote controller and indoor unit; Wrong wiring; Phenomenon
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...
Page 66 - OTHER TROUBLES AND CAUSES
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...
Page 67 - Removing the air intake grille; backward to open the intake grille.; DISASSEMBLY PROCEDURE; OPERATING PROCEDURE; Removing the electrical box; remove the electrical cover.; Figure 1; Figure 2
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...
Page 68 - Figure 4; Removing the fan motor; upper side of the casing.; Removing the side panel; side panel by sliding the panel to the front.; Photo 2
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...
Page 69 - Removing the vane motor; Photo 4
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...
Page 70 - Removing the drain pan; and left side drain pan.; Removing the guide vane; Photo 8
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...
Page 72 - PARTS LIST
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
Page 73 - Part numbers that are circled are not shown in the figure
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...
Page 83 - OPTIONAL PARTS; Note 1. How to connect refrigerant pipes.; CENTRALIZED REMOTE CONTROLLER; Model name
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...
Page 84 - HIGH PERFORMANCE FILTER; Applicable Service Ref.
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...
