Mitsubishi Electronics PKH18FL, PKH36FL, PKH24FL, PKH30FL Heating Operation, YES FAN Speed no

Page 23

HEATING OPERATION

Heat operation

A

NO

initial

w 15

w 11

YES

3-minute

NO

HEATING

Heating area

Auxiliary heater

YES

NO

OFF

Vane setting

Defrost release

YES

Vane initial

Defrost

NO

Indoor coil

NO

notch

setting

30 min. elapse

thermistor is 140°F

NO

YES

2

or higher

YES

YES

defrosting

Outdoor unit

FAN speed

NO

NO

trouble

Low notch

Four-way

YES

valve ON

1

Airflow 10% up

FAN setting

YES

notch

Hot adjust

in process

NO

B

Compressor ON YES

YES

Indoor piping

NO

NO

10-minute

B

95°F or higher

Compressor

YES

compressor

NO

w 9

operation

thermostat ON

HOT adjust NO

YES

NO

Indoor piping

YES

Allowance cancel

5 min. elapse

Allowance cancel

131°F or lower

YES

YES3 min.restart

NO

prevention

w 11

YES

NO

Auxiliary

NO Auxiliary heater

FAN SPEED

NO

Heating

A

heater ON

Low

thermostat ON

area

YES

FAN SPEED NO

YES

NO

YES

NO Indoor piping

6 min. restart

FAN STOP

Auxiliary heater

Low 2 min.

prevention

140°F or higher

elapse

NO

Indoor piping

NO

ON

YES

w 11

YES

5°F or lower

YES

FAN SPEED

Fan area

YES

2

20 min.elaspe

Auxiliary heater

setting notch

YES

NO

w

OFF

Outdoor unit

Hot adjust start

10

Overheat remote

Hot adjust

Fan area

Outdoor unit

release

trouble

Heating area

trouble

START

FAN SPEED

NO

very low

w 11 Fan area

NO

NO

Indoor Coil. temp.

Cooling area

FAN SPEED

Compressor ON

150°F or higher

YES

Very low airflow

YES

Defrost operation

NO

Compressor OFF

START

Allowance

Four-way valve

period

YES

6-minute restart

OFF

Overload protect

prevention

1

Allowance set

AUTOMATIC COOLING/HEATING OPERATION

Compressor OFF

Auto COOL/HEAT

operation

NO

w 16

1

Initial

mode

w 17

YES

NO

>

T1 = To

YES

HEAT mode

COOL mode

	COOL mode NO
	YES		NO T1 ] (To + 4)
	NO T1 [ (To - 4)		NO T1 ] (To + 4)
	NO T1 [ (To - 4)
	YES		YES
	YES		After 15min.	YES
	After 15min.	YES	After 15min.	YES
	After 15min.	YES	T1 ] (To + 4)
	T1 [ (To-4)		NO
	NO		NO
	NO
	COOL operation	HEAT operation	HEAT operation	Cool mode
				set
		1		1

w15 ( i ) Until Low airflow is set while in hot adjustment (ii)While defrosting (FAN STOP)

(iii)When thermostat is OFF

In the case of( i ), (ii) and (iii) above, airflow is horizontal regardless the VANE setting. w16 When AUTO operation is started, COOL or HEAT mode is selected automatically. w17 T1 : Room temperature.

To : Set temperature

23

Image 23

Contents Revised EDITION-A ContentsFeatures Part Names and Functions Models PKH18FL, PKH24FL, PKH30FL, PKH36FL SpecificationsModels PKH18FL, PKH24FL, PKH30FL, PKH36FL Performance Data DataHeating Capacity PKH24FL Performance CurvePKH18FL PKH36FL Condensing Pressure and Suction Pressure PKH18FL Cooling ModeHeating Mode Indoor DB temperature F 80 psi.G Pressure Suction PKH24FL Cooling ModePKH30FL Cooling Mode PKH36FL Cooling Mode SHF PKH18FL PKH24FL PKH30FL PKH36FL Standard Operation DataWith wind baffle D.B F if no wind baffle Operating RangeOutlet AIR Speed and Coverage Range Band Center FREQUENCIES, Hz Noise Criterion CurvesPKH30FL PKH36FLUnit inch OutlinesPKH24FL Inch PKH36FL PKH30FLPKH18FL PKH24FL PKH30FL PKH36FL Refrigerant System DiagramWireless Remote Controller Models PKH18FL, PKH24FL, PKH30FL, PKH36FL Wiring Diagram Wiring DiagramMain Operation Operation FLOW-CHARTCooling Operation YES DRY OperationYES FAN Speed no Heating OperationOutline of Microprocessor Control Microprocessor ControlCool operation Cool operation time chartHow to operate Indoor Unit ControlTermination conditions Compressor controlStart condition Coil frost protectionAuto Return Auto vane controlDetecting abnormalities in the outdoor unit DRY operation DRY operation time chart How to operateFan control in DRY operation Display in Heat operation Heat operation time chart How to operateHeat operation Overheat prevention Overheat protectionBooster heater control Defrosting operation Indoor coil temperature abnormality detectionTemperature range Initial modeMode change Auto return Auto vane controlCOOL/DRY operation Test run Timer operationTimer function Before emergency operation Emergency operationOn remote controller board On indoor controller board Dip switch and jumper connector functionsIndoor FAN Control Model No Wireless remote controller pair number setting operationSelf-check TroubleshootingOther Troubles and Causes Between remote controller and indoor unit Wrong Wiring on SiteCheck points HOW to Check the PartsPhoto Disassembly ProcedureOperating Procedure PHOTOS&ILLUSTRATION Indoor unit PKH24FLRemoving the drain pan Removing the vane motorRemoving the intake grilles Removing the electrical heater Operating Procedure PhotosRemoving the line flow fan and the fan motor Electrical Parts PKH18FL PKH24FL PKH30FL PKH36FL Parts ListR01 12G 621 Qty / set Wiring Parts No Parts Name SpecificationsT7W E13 T7W E14PKH24FL PKH30FL PKH36FL Structural PartsPage Distributed in Dec No.OC276 New publication, effective Nov Specifications are subject to change without notice