Heat Controller DMH18DB-1 Self-diagnosisFunction, Indoor Error, Outdoor Error, Service Manual

Troubleshooting Guide

Self-diagnosisFunction

■Error Indicator

•The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble.

•Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table.

•If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed.

•After error occurrence, if error is released, error LED is also released simultaneously.

•To operate again on the occurrence of error code, be sure to turn off the power and then turn on.

•Having or not of error code is different from Model.

LED1 LED2

Indoor Error

Error code	Description	MPS Variable	LED1	LED2	Indoor Status
00	No Error				ON
01	Indoor Room Thermistor Error		1 time		OFF
02	Indoor In-Piping Error		2 times		OFF
05	Communication Error between In and Out		5 times		OFF
06	Indoor Out-Piping Error		6 times		OFF
07	Differnt mode operation		7 times		OFF
10	Indoor fan motor locked error			1 times	OFF

Outdoor Error

Error code	Description	MPS Variable	LED1(Red)	LED2(Green)	Indoor Status
33	D-Pipe High(Normal)		3 times	3 times	OFF
44	Outdoor Air Thermistor Error(Open/Short)		4 times	4 times	OFF
45	Cond Pipe Thermistor Error(Open/Short)		4 times	5 times	OFF
47	Const. D-Pipe Thermistor Error(Open/Short)		4 times	7 times	OFF
51	Capcity Error(High/Low)		5 times	1 times	OFF

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