Mitsubishi Heavy Industries Air Conditioning Fault Codes For RAC Multi-Split Indoor and Outdoor systems

RAC MULTISPLIT FAULT CODES - Current and Previous Models
Inverter Multi Indoor		SRK	ZJ-S,ZJ-S1,ZM-S,ZMX-S		ZJX-S, ZJX-S1	ZK-S
		SRR	ZJ-S
		SRF	ZJX-S, ZJX-S1,ZMX-S
		FDT C	VD,VF, VF/1
		FDUM	VF, VF/1
		FDEN	VD, VF, VF/1
Inverter Multi Outdoor		SCM	ZJ-S, ZJ-S1, ZM-S
Indoor Unit Display		Outdoor Control PCB, Red LED	Wired Remote Control	Description of Trouble	Possible Cause
Run Light Green	Timer Light Amber
-	-	-	E1	Error of wired remote Control	Broken wire, faulty indoor P.C.B., faulty controller.
-	-	1	E41	Power transistor ov erheat	Faulty power transistor or sensor.
-	-	2	E40	High pressure error	Faulty high pressure sensor, faulty control PCB, poor air circulation.
-	-	4	E45	Outdoor main or sub PCB communication error	Outdoor sub or main PCB faulty, poor connection of wires between outdoor PCBs
-	-	8	E54	High pressure sensor	Faulty high pressure sensor, faulty control PCB.
-	Flashing	-	E21	Limit switch error	Defectiv e limit switch, air inlet panel set, I/D control PCB
1x	ON	OFF	-	Indoor heat exchanger sensor (1) error	Broken heat exchanger sensor (1) wire, poor connection
2x	ON	OFF	-	Room temperature sensor	Broken room temperature sensor wire, poor connection
2x	2x	7x	E60	Rotor lock	Faulty compressor, open phase on compressor, faulty outdoor P.C.B.
3x	ON	OFF	-	Heat exchanger sensor 2 error	Broken heat exchanger sensor 3 wire, poor connection
4x	ON	OFF	E9	Drain error	Blocked drain, faulty float switch, faulty drain pump
5x	ON	2x	E47	Activ e filter v oltage error	Defectiv e Activ e Filter, incorrect power supply
6x	ON	OFF	E16	Indoor fan motor error	Faulty indoor fan motor, poor connection
7x	ON	2x	E57	Refrigerant cycle system protectiv e control	Closed serv ice v alv e, insufficient refrigerant
Flashing	1x	8x	E38	Outdoor air temperature sensor	Broken sensor wire, poor connection, faulty outdoor PCB
Flashing	2x	8x	E37	Outdoor heat exchanger sensor	Broken sensor wire, poor connection, faulty outdoor PCB
Flashing	4x	8x	E39	Discharge pipe sensor	Broken sensor wire, poor connection, faulty outdoor PCB
Flashing	5x	8x	E53	Outdoor suction sensor	Broken sensor wire, poor connection, faulty outdoor sub PCB
ON	1x	x1	E42	Current Cut	Compressor locking, open phase on compressor output, short circuit on power transistor, closed serv ice v alv e
ON	2x	2x	E59	Trouble of outdoor unit	discharge sensor wire or poor connection, compressor blockage
ON	3x	3x	E58	Current safe stop	Ov erload protection, ov er charged, compressor locking
ON	4x	1x	E51	Power transistor error	faulty inv erter PCB, faulty main PCB or faulty fan motor
ON	5x	5x	E36	Ov er heat of compressor	Low on gas, faulty discharge pipe senor, closed serv ice v alv e
ON	6x	6x	E5	Error of signal transmission	Defectiv e power supply, broken signal wire, faulty indoor/outdoor P.C.B.
ON	7x	Flashing	E48	Outdoor fan motor or main PCB	Faulty condenser fan motor or faulty main PCB
ON	Flashing	2x	E35	Cooling High Pressure Protection	Ov erload protection, ov er charged, broken outdoor heat exchanger sensor wire, closed serv ice v alv e

  

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MK42 7EE,

United Kingdom