OC194-39, Wrong Wiring on Site | Mitsubishi Electronics PL18FK21

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		Thermostat	Phenomenon
Indoor	Outdoor	OFF	Operation stops.
Indoor	Outdoor
1	1
2	2		4-Way valve is turned to ON. 9 minutes later, the check code “P8”
3	3	ON
3	3	ON	appears on the remote controller display.
			appears on the remote controller display.
Indoor	Outdoor	OFF	The outdoor unit stops.
Indoor	Outdoor
1	1
2	2
3	3	ON	Operation stops. 9 minutes later, the check code “P8” appears on the
3	3	ON	remote controller display.
			remote controller display.
Indoor	Outdoor	OFF	The outdoor unit stops.
Indoor	Outdoor
1	1
2	2
3	3	ON	Operation stops. 9 minutes later, the check code “P8” appears on the
3	3	ON	remote controller display.
			remote controller display.
Indoor	Outdoor	OFF	The outdoor unit stops.
1	1
2	2
3	3	ON	Operation stops. 9 minutes later, the check code “P8” appears on the
		ON	remote controller display.
			remote controller display.
Indoor	Outdoor	OFF	The outdoor unit stops.
Indoor	Outdoor
1	1
2	2
3	3	ON	Operation stops. 9 minutes later, the check code “P8” appears on the
		ON	remote controller display.
			remote controller display.
Disconnection between 1 and 1 or 2		OFF	Operation stops.
and 2.
		ON	9 minutes later, the check code “P8” appears on the remote controller
		ON	display.
			display.
Disconnection between 3 and 3.		OFF
			Normal operation.
		ON

OC194-39

PL18FK21, PL30FK21, PL12FK1, PL36FK31, PL24FK21 specifications

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