Mitsubishi Electronics PCH30GK, PCH24GK, PCH36GK OC277-46, Wrong Wiring on Site, Cool, Heat

3. WRONG WIRING ON SITE

3-1 Between remote controller and indoor unit

If the wire is disconnected between the remote controller and the indoor unit, nothing is displayed on the remote controller when the POWER button is pressed. The beep sound will also not be heard.

3-2 Phenomenon due to wrong wiring between indoor and outdoor units
Wrong wiring		Mode	Thermostat	Phenomenon
			OFF	Operation stops.
Indoor	Outdoor	COOL	ON	4-Way valve turns ON. 9 minutes later, check code “P8” appears
1	1
				on remote controller display.
2	2
			OFF	Cooling operation. Several minutes later, check code “P8” appears
3	3
				on remote controller display.
		HEAT
			ON	Normal operation until first thermostat OFF.
			OFF	Outdoor unit stops.
Indoor	Outdoor	COOL		Operation stops. 9 minutes later, check code “P8” appears on
1	1		ON
				remote controller display.
2	2
3	3		OFF	Operation stops.
		HEAT		Operation stops. 27 minutes later, check code “P8” appears on
			ON
				remote controller display.
			OFF	Outdoor unit stops.
Indoor	Outdoor	COOL		Operation stops. 9 minutes later, check code “P8” appears on
1	1		ON
				remote controller display.
2	2
3	3		OFF	Operation stops.
		HEAT		Operation stops. 27 minutes later, check code “P8” appears on
			ON
				remote controller display.
Indoor	Outdoor		OFF	Outdoor unit stops.
		COOL
1	1			Operation stops. 9 minutes later, check code “P8” appears on
			ON
2	2			remote controller display.
3	3		OFF	Operation stops.
		HEAT		Operation stops, 27 minutes later, check code “P8” appears on
			ON
				remote controller display.
Indoor	Outdoor		OFF	Outdoor unit stops.
		COOL		Operation stops. 9 minutes later, check code “P8” appears on
1	1		ON
2	2			remote controller display.
3	3		OFF	Operation stops.
		HEAT		Operation stops. 27 minutes later, check code “P8” appears on
			ON
				remote controller display.

Disconnection between 1 and 1 or 2		OFF	Operation stops.
	COOL
and 2.		ON	Operation stops. 9 minutes later, check code “P8” appears on
			remote controller display.
		OFF	Operation stops. 4-way valve turns OFF.
	HEAT
		ON	27 minutes later, check code “P8” appears on remote controller
			display.
Disconnection between 3 and 3.	COOL	–	Normal operation.
		OFF	Operation stops. 4-way valve turns OFF.
	HEAT
		ON	Operation stops. 27 minutes later, check code “P8” appears on
			remote controller display.

OC277-46