Mitsubishi Electronics PCH24GK, PCH36GK, PCH30GK, PCH42GK specifications OC277-24, Cooling Operation

Page 24

COOLING OPERATION

COOL operation

Four-way valve/OFF

NO

 

 

 

Initial

 

 

 

w 8

COOLING

 

 

 

YES

 

 

 

 

Vane initial

 

 

 

 

setting

NO

 

 

 

Vane

 

40 deg downward angle

 

 

60 deg downward angle

 

NO

 

YES

 

Fan speed

 

 

 

 

 

 

 

LOW

 

NO

 

 

YES

 

 

Downward discharge

 

 

 

 

 

 

 

1 hour

 

 

 

 

YES

Vane setting notch

Vane horizontal

airflow

 

w 9

NO

Compressor YES thermostat

ON NO

Allowance cancel

NO YES

3-minute

 

 

 

time delay

 

 

 

NO

 

 

YES

6-minute

Allowance

YES

 

time delay

period

 

 

 

NO

 

 

NO

 

 

 

 

 

 

6 minute

 

 

 

 

 

 

 

 

 

NO

 

3-minute

 

 

time delay

 

 

 

compressor operation

 

 

 

 

 

 

 

YES

 

 

Allowance set

 

Coil frost protection

 

w 10

 

 

 

 

 

 

Coil frost

YES

 

 

 

 

 

 

prevention

 

 

 

 

 

 

 

NO

 

 

 

 

 

w 11

 

 

NO

 

 

 

 

 

Cooling area

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

NO

 

10-minute

 

 

NO

 

 

 

compressor operation

 

 

1 min continue

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

YES

 

 

Allowance cancel

 

 

 

 

 

 

 

 

FAN speed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOW

 

 

 

Coil frost

YES

 

 

 

 

 

 

protection

 

 

 

FAN speed

YES

 

 

NO

 

 

 

 

 

 

 

 

LOW 5 min

 

NO

 

16-minute

 

Indoor coil

NO

elapse

 

 

 

NO

 

 

compressor operation

 

temperature is

 

 

 

 

 

 

50°F or higher

 

 

Outdoor unit

 

 

YES

 

YES

 

 

trouble

 

 

 

 

 

 

 

 

Indoor coil

YES

3-minute

 

 

 

 

temperature is

 

time delay

 

 

 

 

34°F or lower

 

 

 

 

 

 

 

NO

Coil frost

Coil frost

 

 

 

 

 

 

prevention

prevention release

 

 

Compressor ON

Compressor OFF

1

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 auto vane will continue to swing.

w9 When operating TEST RUN, the thermostat will be continuously ON.

w10 After 3 minute compressor operation, if the indoor coil thermistor reads -59°F or below for 3 minutes, the compressor will stop for 6 minutes.

w11 Cooling area : Indoor coil temperature is more than 9 degrees above the room temperature. Heating area : Indoor coil temperature is more than 9 degrees below the room temperature. FAN area : Indoor coil temperature is within 9 degrees either way of the room temperature.

OC277-24

Image 24
Contents Contents OC277-1Features OC277-2Easy Maintenance no Maintenance Necessary for 2500 Hours OC277-3Improving Efficiency of Piping Work Part Names and Functions OC277-4Remote controller operation buttons OC277-5Remote controller display OC277-6Specifications OC277-7Models PCH24GK, PCH30GK, PCH36GK, PCH42GK Data OC277-8Models PCH24GK, PCH30GK, PCH36GK, PCH42GK Performance Data CFM SHC TPCOC277-9 CFMOC277-10 Performance CurveOC277-11 PCH36GK Cooling Capacity PCH36GK Heating CapacityOC277-12 Condensing Pressure and Suction PressureOC277-13 PCH30GKOC277-14 PCH36GKOC277-15 PCH42GKOC277-16 Standard Operation DataSHF PCH24GK PCH30GK PCH36GK PCH42GK OC277-17 Operating RangeOutlet AIR Speed and Coverage Range Additional Refrigerant Charge R22ozOC277-18 Noise Criterion Curves PCH24GKPCH30GK PCH36GK PCH42GKOutlines and Dimensions OC277-19Indoor unit PCH24GK OC277-20 Indoor unit PCH30/36/42GKRefrigerant System Diagram Remote controllerOC277-21 PCH30GK PCH36GK PCH42GKWiring Diagram Model PCH24/30/36/42GK Wiring DiagramOC277-22 Operation FLOW-CHART OC277-23Main Operation OC277-24 Cooling OperationOC277-25 DRY OperationDRY YESOC277-26 Heating OperationMicroprocessor Control OC277-27Outline of Microprocessor Control How to operate OC277-28Indoor Unit Control Compressor controlOC277-29 Start conditionCoil frost protection Termination conditionsOC277-30 Auto vane controlSwing Auto ReturnOC277-31 Detecting abnormalities in the outdoor unitRange a Range B Range C DRY operation time chart How to operate OC277-32DRY operation OC277-33 Heat operation time chart OC277-34Heat operation Display in Heat operationOC277-35 Overheat protectionBooster heater control Overheat preventionIndoor coil temperature abnormality detection OC277-36Defrosting operation Initial mode How to operate Mode changeTemperature range OC277-37OC277-38 COOL/DRY operationAuto return Timer operation Timer functionOC277-39 Test run Before test runOC277-40 Emergency operationBefore emergency operation Dip switch functions On remote controller boardOC277-41 On indoor controller boardFan motor max. rotational frequency Service Ref OC277-42PCH24GK PCH30GK PCH36GK PCH42GK SW7 OFF PCH36, 42GKTrouble Shooting Remote Controller Display AbnormalityOC277-43 When malfunction occurs during operation For group control using one remote controllerOC277-44 Example Check Unit code addressOC277-45 Wrong Wiring on Site OC277-46Cool HeatOC277-47 Other Troubles and CausesHow to check the parts OC277-48PCH OC277-49 System Control OC277-50Variety of System Control Functions PAC-SA89TA-EGroup Control with a Single Remote Controller How to wireHow to set unit-address OC277-51Control Using TWO Remote Controllers Remote ON-OFF and Individual Remote ControlsHow to set SW17-7 See Figure Remote controller LCD indicationIndividual Control by Grouping the Remote Controllers Basic wiringSwitch function of remote ON-OFF switch OC277-53Multiple Remote Control Display Timer Operation or the Operation by AN External SignalOC277-54 Auto Restart FunctionDisassembly Procedure PCH24GK Operating ProcedureOC277-55 Removing the air intake grilleOC277-56 Removing the fan motorRemoving the sirocco fan Removing the side panelOperating Procedure Photos OC277-57Removing the vane motor Removing the Indoor coil thermistorOC277-58 Removing the drain panRemoving the guide vane Remove the intake grilleOC277-59 Removing the support heaterRemoving the heat exchanger Parts List OC277-60Structural Part PCH24GK OC277-61 OC277-62 Structural Part PCH30GK PCH36GK PCH42GKOC277-63 OC277-64 FAN and Heater Parts PCH24GKOC277-65 FAN and Heater Parts PCH30GK PCH36GK PCH42GKOC277-66 Electrical Parts PCH24GK10 PCH30GK PCH36GK PCH42GKTimer Optional PartsOC277-67 PAC-SC32PTA Weekly Timer Setting Display OC277-68Names and functions SET Back DisplayTimer Adapter Multiple Remote Controller AdapterOC277-69 Refrigerant PipesSpecifications are subject to change without notice