Troubleshooting Guide

Fails to Start

Check of power source.

Check of control panel setting.

Compressor fails only to start.

Drop of power voltage.

Defect of compressor capacitor.

Capacitor check.

Replacement.

Check of circuit breaker and fuse.

Check control panel.

 

 

Fan only fails to start.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Improper wiring.

Improper thermistor

 

 

 

 

setting

 

 

 

 

 

 

 

 

 

 

 

 

 

Defect of fan motor

 

Loose terminal

 

capacitor.

connection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Irregular motor

 

Improper wiring

 

resistance (Ω )

 

 

Irregular motor

 

 

 

insulation (Ω )

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replacement of fan motor.

 

 

 

 

Irregular motor resistance (Ω )

Irregular motor insulation (Ω )

Replacement of compressor (Motor damaged).

Regular but fails to start.

Replacement of compressor. (Locking of piston, metal.)

30Room Air Conditioner

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Heat Controller RAD-101A, RAD-81A, RADS-81B manual Fails to Start