Mitsubishi Electronics PCH42GK Disassembly Procedure, OC277-55, PCH24GK Operating Procedure

Page 55

12 DISASSEMBLY PROCEDURE

PCH24GK

OPERATING PROCEDURE

PHOTOS&ILLUSTRATIONS

1. Removing the air intake grille

Figure 1

(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.

Intake grille

slide

 

Intake grille

Holding knobs

Hinges

Pull out the intake grille

2. Removing the electrical box

Figure 2

(1)Remove the air intake grille.

(2)Remove the screw from the beam and remove the beam.

(3)Remove the screws from the electrical cover, and

remove the electrical cover.

 

 

Beam

(4) Disconnectors including CN6V and CN21.

 

Slide to the left

 

(5) Remove the screws from the electrical box and pull out

 

 

 

the electrical box.

 

 

 

<Electrical parts in the electrical box>

 

 

Clamp

Terminal block (for power supply)

Screws (electrical cover)

 

Terminal block (for in/outdoor connecting wire)

Electrical cover

 

Terminal block (for remote controller)

 

 

 

 

Fan motor capacitor

 

Screws (electrical box)

 

Indoor control board

 

 

Relay

Photo 1

 

 

Power Board

 

 

 

Fan motor

Relay

Terminal block

 

capacitor

Relay

(remote control)

Power

Indoor control

Terminal block

Terminal block

board

board

(in/out connecting)

(power supply)

OC277-55

Image 55
Contents OC277-1 ContentsOC277-2 FeaturesOC277-3 Easy Maintenance no Maintenance Necessary for 2500 HoursImproving Efficiency of Piping Work OC277-4 Part Names and FunctionsOC277-5 Remote controller operation buttonsOC277-6 Remote controller displayOC277-7 SpecificationsModels PCH24GK, PCH30GK, PCH36GK, PCH42GK CFM SHC TPC DataOC277-8 Models PCH24GK, PCH30GK, PCH36GK, PCH42GK Performance DataCFM OC277-9Performance Curve OC277-10PCH36GK Cooling Capacity PCH36GK Heating Capacity OC277-11Condensing Pressure and Suction Pressure OC277-12PCH30GK OC277-13PCH36GK OC277-14PCH42GK OC277-15Standard Operation Data OC277-16SHF PCH24GK PCH30GK PCH36GK PCH42GK Additional Refrigerant Charge R22oz OC277-17Operating Range Outlet AIR Speed and Coverage RangePCH36GK PCH42GK OC277-18Noise Criterion Curves PCH24GK PCH30GKOC277-19 Outlines and DimensionsIndoor unit PCH24GK Indoor unit PCH30/36/42GK OC277-20PCH30GK PCH36GK PCH42GK Refrigerant System DiagramRemote controller OC277-21Model PCH24/30/36/42GK Wiring Diagram Wiring DiagramOC277-22 OC277-23 Operation FLOW-CHARTMain Operation Cooling Operation OC277-24YES OC277-25DRY Operation DRYHeating Operation OC277-26OC277-27 Microprocessor ControlOutline of Microprocessor Control Compressor control How to operateOC277-28 Indoor Unit ControlTermination conditions OC277-29Start condition Coil frost protectionAuto Return OC277-30Auto vane control SwingDetecting abnormalities in the outdoor unit OC277-31Range a Range B Range C OC277-32 DRY operation time chart How to operateDRY operation OC277-33 Display in Heat operation Heat operation time chartOC277-34 Heat operationOverheat prevention OC277-35Overheat protection Booster heater controlOC277-36 Indoor coil temperature abnormality detectionDefrosting operation OC277-37 Initial mode How to operateMode change Temperature rangeCOOL/DRY operation OC277-38Auto return Test run Before test run Timer operationTimer function OC277-39Emergency operation OC277-40Before emergency operation On indoor controller board Dip switch functionsOn remote controller board OC277-41PCH36, 42GK Fan motor max. rotational frequency Service RefOC277-42 PCH24GK PCH30GK PCH36GK PCH42GK SW7 OFFRemote Controller Display Abnormality Trouble ShootingOC277-43 Example Check Unit code address When malfunction occurs during operationFor group control using one remote controller OC277-44OC277-45 Heat Wrong Wiring on SiteOC277-46 CoolOther Troubles and Causes OC277-47OC277-48 How to check the partsPCH OC277-49 PAC-SA89TA-E System ControlOC277-50 Variety of System Control FunctionsOC277-51 Group Control with a Single Remote ControllerHow to wire How to set unit-addressRemote controller LCD indication Control Using TWO Remote ControllersRemote ON-OFF and Individual Remote Controls How to set SW17-7 See FigureOC277-53 Individual Control by Grouping the Remote ControllersBasic wiring Switch function of remote ON-OFF switchAuto Restart Function Multiple Remote Control DisplayTimer Operation or the Operation by AN External Signal OC277-54Removing the air intake grille Disassembly ProcedurePCH24GK Operating Procedure OC277-55Removing the side panel OC277-56Removing the fan motor Removing the sirocco fanRemoving the Indoor coil thermistor Operating Procedure PhotosOC277-57 Removing the vane motorRemove the intake grille OC277-58Removing the drain pan Removing the guide vaneRemoving the support heater OC277-59Removing the heat exchanger OC277-60 Parts ListStructural Part PCH24GK OC277-61 Structural Part PCH30GK PCH36GK PCH42GK OC277-62OC277-63 FAN and Heater Parts PCH24GK OC277-64FAN and Heater Parts PCH30GK PCH36GK PCH42GK OC277-65Electrical Parts PCH24GK10 PCH30GK PCH36GK PCH42GK OC277-66Optional Parts TimerOC277-67 SET Back Display PAC-SC32PTA Weekly Timer Setting DisplayOC277-68 Names and functionsRefrigerant Pipes Timer AdapterMultiple Remote Controller Adapter OC277-69Specifications are subject to change without notice