Mitsubishi Heavy Industries Air Conditioning Fault Codes For RAC Multi Indoor and Outdoor systems ZD, ZF, ZE, ZG

RAC MULTISPLIT FAULT CODES - Historic Models
Inverter Multi Indoor		SKM	ZD, ZF, ZG
		SRRM	ZE, ZF
		ST M	ZE, ZF
Inverter Multi Outdoor		SCM	ZD-S, ZF-S, ZG-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	Broken wire, faulty indoor P.C.B., faulty controller.
1x	ON	OFF	E6	Indoor heat exchanger sensor (1)	Broken heat exchanger sensor (1) wire, poor connection
2x	ON	OFF	E7	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.
4x	ON	OFF	E9	Drain error	Blocked drain, faulty float switch, faulty drain pump
5x	ON	OFF	E6	Indoor heat exchanger sensor (2)	Broken heat exchanger sensor (2) wire, poor connection
6x	ON	OFF	E16	Indoor fan motor error	Fault indoor fan motor, poor connection
7x	ON	OFF	E6	Closed serv ice v alv e, indoor heat exchanger sensor (1)	Closed serv ice v alv e, indoor heat exchanger disconnected or open circuit
Flashing	1x	Flashing	E38	Outdoor air temperature sensor	Broken sensor wire, poor connection
Flashing	2x	Flashing	E37	Outdoor heat exchanger sensor	Broken sensor wire, poor connection
Flashing	4x	4 sec on/off	E39	Discharge pipe sensor	Broken sensor wire, poor connection
Flashing	5x	Flashing	E53	Compressor suction sensor	Broken sensor wire, poor connection
Flashing	6x	Flashing	E41	Power transistor sensor error	Broken sensor wire, poor connection
ON	1x	1x	E42	Current Cut	Compre s s or l ocki ng, ope n pha s e on compre s s or output, s hort ci rcui t on powe r tra ns i s tor, cl os e d s e rvi ce va l ve
ON	2x	2x	E59	Trouble of outdoor unit	Broken compressor wire, broken power transistor, broken discharge sensor wire or
ON	3x	3x	E58	Current safe stop	Ov erload protection, ov er charged, compressor locking
ON	4x	4x	E41	Power transistor error	Broken power transistor
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 or signal transmission	Defectiv e power supply, broken signal wire, faulty indoor/outdoor P.C.B.
ON	7x	ON	E48	Faulty outdoor fan motor	Faulty condenser fan motor, poor connection

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Orion Air Conditioning & Refrigeration Ltd

10 Grisedale Court,

Woburn Road Ind. Est.

Kempston,

Bedfordshire,

MK42 7EE,

United Kingdom