Heat Controller DMC36CA-1, DMC24CA-1 When indoor Fan does not operate, Troubleshooting Guide

Troubleshooting Guide

Trouble 4	When indoor Fan does not operate
		Turn off Main power

Check the connection of CN-FAN or CN-MOTOR

Check the Fan Motor

Check the Fuse(AC250V/T2A)

Check the related circuit of indoor Fan Motor.

•The pin of Micom, and the part for driving SSR

•Check the pattern

•Check the SSR

-SSR Open: Indoor Fan Motor never operate

-SSR short: Indoor Fan Motor always operates in case of ON or OFF.

Turn ON Main Power

Check the SSR high speed operation by remote control.

(The Indoor Fan Motor is connected)

The voltage of PIN NO 1(blue) and 3(yellow) of CN-FAN or CN-MOTOR.

About AC 160V over

About AC 50V over

SSR is not damaged

SSR Check

Service Manual 35