Sanyo TH4272R / CH4272R, XH4272R / C4272R, UH2672R, XH2672R, UH3672R / CH3672R Service procedures

4. Service procedures

			Wired
			remote
			control
	Possible cause of malfunction		display
Ceiling panel connection failure			P09
Activation of	Indoor protection	Fan protective thermostat	P01
protective
		Float switch	P10
device
		Discharge temperature trouble	P03
	Outdoor protection	High pressure switch or compressor motor thermal protector is activated.	P04
		Open phase detected, AC power trouble	P05
		No gas	P15
		4-way valve locked	P19
		High cooling load	P20
		Outdoor fan trouble	P22
		Inverter compressor trouble (HIC PCB)	P26
		Inverter compressor trouble (MDC)	P29
		Simultaneous-operation multi control trouble	P31
		Compressor current failure (overload)	H01
Thermistor	Thermistor open circuit	Indoor heat exchanger temperature sensor (E1)	F01
fault	• Short circuit (indoor)
		Indoor heat exchanger temperature sensor (E2)	F02
		Indoor temperature sensor	F10
	Thermistor open circuit	Discharge temperature (TD)	F04
	• Short circuit (outdoor)
		Outdoor heat exchanger temperature (C1)	F06
		Outdoor heat exchanger temperature (C2)	F07
		Outdoor air temperature (TO)	F08
		Intake temperature (TS)	F12
		Indoor EEPROM error	F29
		Outdoor EEPROM error	F31

Wireless

remote controller receiver display

Operation Timer Standby

Alternately

Alternately

Alter.

Alter.

Simul.

Simul.

4

SM831148

IV-3