Single Zone Service Manual - General

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Part 4 Trouble Shooting

When indoor Fan does not operate

Trouble 4

Check the SSR high speed operation by remote control.

(the Indoor Fan Motor is connected)

Turn off main power.

Check the connection of CN-FAN.

Check the Fan Motor.

Check the Fuse(AC250V, T2A).

Turn on the main power

Check the related circuit of indoor Fan Motor.

• The pin No.

of micom and the part for driving SSR.(Q01M)

• Check the related pattern.

• Check the SSR.

- SSR Open: Indoor Fan Motor never operate.

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

• Check the connectors.

• Check that whether the housings and harnesses would be separated

when there are attempts to disconnect those.

• Check to pull with hands directly to the harness.

• No harness should be divided from the housing.

The voltage of Pin No 1(orange) and 3(black) of CN-FAN.

About AC 160V over About AC 50V over

SSR is not damaged Check SSR