Daewoo DWC-121R Trouble Shooting, Unit Not Run, Self-DiagnosticFunction, 1Error Code 1Er

7. TROUBLE SHOOTING

Self-Diagnostic Function

1)Error Code 1(Er)

1 Check the connector of room air thermistor. (or connecting wire)

2Check soldering of connecting on control P.C.B. (Error of soldering or short) 3Check the resistance of room air thermistor.

“Press the temperature Keys (Up & Down), Error code is displayed.”

Unit Not Run

The power is applied to the unit

Check the voltage between “POWER 1 ”

and

“RL1 4 ” of Main P.C.B

Rating voltage

under 90%

Check the

Breaker or Fuse

Rating voltage more than 90%

Check the unit display

is all off?

Yes

Press the ON/OFF button of Remote Control or Front Panel

Is the unit display all off?

Pull out the power plug

and then insert the power plug

after 5 second

No

No

Self Diagnostic function is ON

Yes

Check according to

self Diagnostic function

Main P.C.B defect

No

Main P.C.B is normal

Recheck from the beginning

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