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

RAC FAULT CODES
Inverter RAC Indoor Unit		SRK	ZD, ZE, ZE-S1, ZG, ZJ, ZJ-S1,ZM, ZMP, ZR, ZS, ZFX, ZGX, ZHX, ZIX, ZJX, ZJX-S1,ZMX, ZSX
		SRR/ SRF	ZIX, ZJX, ZJX-S1,ZMX
Inverter RAC Outdoor Unit		SRC	ZD, ZE, ZE-S1, ZG, ZJ, ZJ-S1,ZM, ZR, ZS, ZFX, ZGX, ZHX, ZIX, ZJX, ZJX-S1,ZMX, ZSX
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 wi re d re mote	Broke n wi re , fa ul ty i ndoor P.C.B., fa ul ty control l e r.
OFF	Fl a s hi ng	-	E21	Li mi t Swi tch e rror	De fe cti ve l i mi t s wi tch, a i r i nl e t pa ne l s e t, I/D control PCB
1x	ON	-	-	He a t e xcha nger s e ns or (1) e rror	Broke n he a t e xcha nge r s e ns or (1) wi re , poor conne cti on
2x	ON	-	E7	Room te mpe ra ture s e ns or	Broke n room te mpe ra ture s e ns or wi re, poor conne cti on
2x	2x	7x	E60	Rotor l ock	Fa ul ty compre s s or, ope n pha s e on compre s s or, fa ul ty outdoor P.C.B.
3x	ON	-	-	He a t e xcha nger s e ns or (2) e rror	Broke n he a t e xcha nge r s e ns or (2) wi re , poor conne cti on
4x	ON	-	E9	Dra i n Fa ul t	Fl oa t s wi tch a cti va te d, fa ul ty pump, fa ul ty PCB, fa ul ty fl oa t s wi tch
5x	ON	2x	E47	Acti ve Fi l te r vol ta ge e rror	De fe cti ve Acti ve Fi l te r, i ncorre ct powe r s uppl y
6x	ON	-	E16	Indoor fa n motor e rror	Fa ul t i ndoor fa n motor, poor conne cti on
7x	ON	2x	E57	Refri gera ti on s ys te m prote cti ve control	Se rvi ce va l ve cl os e d, refri gera nt i ns uffi ci e nt
7x	1x	4x	E40	Se rvi ce va l ve (ga s s i de ) cl os e d, defe cti ve outdoor PCB	Output curre nt of i nve rte r e xce e ds s peci fi ca ti on
Fl a s hi ng	1x	8x	E38	Outdoor a i r te mp s e ns or	Broke n s e ns or wi re , poor conne cti on
Fl a s hi ng	2x	8x	E37	Outdoor he a t e xcha nge r s ens or	Broke n s e ns or wi re , poor conne cti on
Fl a s hi ng	4x	8x	E39	Di s cha rge pi pe s e ns or	Broke n s e ns or wi re , poor conne cti on
ON	1x	1x	E42	Curre nt 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 , EEV not ope ni ng
ON	2x	2x	E59	Troubl e of outdoor uni t	Broke n compre s s or wi re , broke n powe r tra ns i s tor, broke n di s cha rge s e ns or wi re /poor conne cti on, compre s s or bl ocka ge
ON	3x	3x	E58	Curre nt s a fe s top	Ove rl oa d prote cti on, ove r cha rge d, compre s s or l ocki ng
ON	4x	1x	E51	Powe r Tra ns i s tor e rror	Fa ul ty powe r tra ns i s tor
ON	5x	5x	E36	Ove r he a t of compre s s or	Low on ga s , fa ul ty di s cha rge pi pe s e nor, cl os e d s e rvi ce va l ve
ON	6x	6x	E3 / E5	Error of s i gna l tra ns mi s s i on	De fe cti ve power s uppl y, broke n s i gna l wi re , fa ul ty i ndoor/outdoor P.C.B.
ON	7x	ON	E48	Fa ul ty outdoor fa n motor	Fa ul ty conde ns e r fa n motor, poor conne cti on
ON	Fl a s hi ng	2x	E35	Cool i ng Hi gh Pre s s ure Prote cti on	Ove rl oa d prote cti on, ove r cha rge d, broke n outdoor he a t e xcha nger s e ns or wi re , cl os e d s e rvi ce va l ve

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Orion Air Conditioning & Refrigeration Ltd

10 Grisedale Court,

Woburn Road Ind. Est.

Kempston,

Bedfordshire,

MK42 7EE,

United Kingdom