Mitsubishi Electronics PKH36FL, PKH24FL, PKH30FL, PKH18FL Outline of Microprocessor Control

9

MICROPROCESSOR CONTROL

1.OUTLINE OF MICROPROCESSOR CONTROL

INPUT to remote controller

Remote controller board

OUTPUT to remote controller

●OFF-ON switching.

●COOL/DRY-AUTO-HEAT selector switching.

●Thermostat setting.

●TIMER mode selector-switching and Timer setting.

●HIGH-LOW fan speed switching.

●AUTO Vane selector (AIR DISCHARGE) switching.

●TEST RUN switching.

●CHECK mode switching.

(Self diagnostic trouble shooting)

●Processes and transmits orders.

●Indication LCD lights.

COOL CHECK		TEST	˚F
	MODEL	RUN
DRY			˚C
	SELECT		STOP AMPM
AUTO FAN		SWING
FAN			START AMPM
HEAT NOT AVAILABLE

ON/OFF TEMP

Indoor unit

INPUT from indoor unit

●Room temperature thermistor (RT1)

●Pipe temperature thermistor (RT2)

OUTPUT to indoor unit

●Auto vane’s angle setting.

●Booster heater ON-OFF Control.

●Emergency stop.

Independent Control of

Outdoor Unit

●Compressor protection device working

●Defrosting

START-STOP

●Fan speed control.

●Crankcase heater control ON-OFF.

●Self diagnostic function

Indoor controller board

●Receives orders from remote controller and tem- perature data from indoor unit.

●Processes orders and data.

●Controls indoor and outdoor operation.

●Self diagnostic function.

wSystem control operation.

wEmergency operation.

wSet by dip switch on indoor controller board.

1	2	3
		unit
Outdoor unit		outdoorto
Polar three-wire cable
12VDC		OUTPUT	● Compressor and
			outdoor fan : ON-
			OFF
			● Operation mode
			change :COOL-
1			HEAT.
2
3
24