Mitsubishi Electronics PKH18FL Wrong Wiring on Site, Between remote controller and indoor unit

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
			ON	Operation stops. 9 minutes later, check code “P8” appears on
1	1
				remote controller display.
2	2
			OFF	Operation stops.
3	3
		HEAT
			ON	Operation stops. 27 minutes later, check code “P8” appears on
				remote controller display.
			OFF	Outdoor unit stops.
Indoor	Outdoor	COOL
			ON	Operation stops. 9 minutes later, check code “P8” appears on
1	1
				remote controller display.
2	2
			OFF	Operation stops.
3	3
		HEAT
			ON	Operation stops. 27 minutes later, check code “P8” appears on
				remote controller display.
			OFF	Outdoor unit stops.
Indoor	Outdoor	COOL
			ON	Operation stops. 9 minutes later, check code “P8” appears on
1	1
				remote controller display.
2	2
			OFF	Operation stops.
3	3
		HEAT
			ON	Operation stops, 27 minutes later, check code “P8” appears on
				remote controller display.
			OFF	Outdoor unit stops.
Indoor	Outdoor	COOL
			ON	Operation stops. 9 minutes later, check code “P8” appears on
1	1
				remote controller display.
2	2
			OFF	Operation stops.
3	3
		HEAT
			ON	Operation stops. 27 minutes later, check code “P8” appears 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.

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