Mitsubishi Electronics PCH42GK, PCH24GK, PCH36GK Operation FLOW-CHART, OC277-23, Main Operation

8

OPERATION FLOW-CHART

MAIN OPERATION

	START
	Power circuit	NO
	breaker
1	YES
YES	Check SW
	ON twice
	NO	w 1
	Operation SW	YES
	ON
	NO
	“OFF” timer	YES
	NO
NO	“ON” timer	Set time	NO
		complete
	YES	YES
	Set time	YES
	complete		w 2
	NO		NO
			Trouble

YES	Remote controller
	operation display

STOP	Trouble STOP	Operating mode	YES
		(COOL)
PROTECTION DEVICE	PROTECTION DEVICE	NO	COOL operation
SELF HOLD RELEASE	SELF HOLD	Operating mode	YES
	w 3
Remote controller		(DRY)
	Remote controller
			DRY operation
indicator lamp OFF		NO
	trouble display
		Operating mode	YES
Indoor side		(HEAT)
	w 4	NO	HEAT operation
		w 6	YES
Fan STOP
		Operating mode
		(FAN)	w 7
Auxiliary heater OFF		NO	FAN operation
		Auto COOL/HEAT
		operation

Outdoor side

w5

Compressor OFF

Fan STOP

Four-way valve OFF

w1 In addition, the centralised and remote control can be operated. w2 The modes which indicate the sources of trouble are listed below.

●EO=Signal transmitting/receiving error

●P1=Room temperature thermistor malfunction

●P2=Indoor coil thermistor malfunction

●P4=Drain sensor malfunction

●P5=Drain over flow

●P6=Coil frost/overheat protection

●P7=System error

●P8=Outdoor unit trouble

w3 The CHECK switch will show if an error has occurred in the past. w4 Fan runs on low speed for 1 minute in order to remove overheat air.

w5 The 3-minute (6 minutes … heating mode) time-delay functions after compressor stops. w6 FAN or AUTO mode is selected by the indoor dip switch setting.

w7 In FAN mode, fan speed and vane operation depend on the remote controller setting. (Compressor is OFF.)

OC277-23