Part 4 Trouble Shooting

6. ElectronicPartsTroubleshootingGuide

Trouble 1

The Product doesn’t operate at all. (9~30kBtu/h Model)

Turn off the main power and wait until LED on outdoor PCB is off.

Turn on the main power again.

"Beeping" sound is from the indoor unit?

Flashing LED mounted on the outdoor PCB?

NO

Check the voltage of power(AC 208~230V, 60Hz).

•The voltage of main power.

•The voltage applied to the unit.

•The connecting method of Indoor/Outdoor connecting cable (each color)

•The PCB Ass'y

(Fuse,Noise Filter, Power Module(SMPS), IC01D,IC04D)

YES

•Primarily, the operating condi- tion of Micom is O.K.

•Check CN-DISP1

The operation check of the P.C.B. Ass'y

 

Procedure

Specification

Remedy

 

 

 

 

1)

The input voltage of Power

: DC 220V~390V

 

 

Module(SMPS)

 

 

2)

The output voltage of Power

: 15V ±10%

Replace the P.C.B.

 

 

Module (SMPS)

 

 

3)

IC01D(LD1085), IC04D(7805)

: DC 5V

 

 

 

 

 

- 40 -

Only for training and service purposes

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Heat Controller VMC09SB-1/VMH09SB-1 service manual Electronic Parts Troubleshooting Guide, Procedure Specification Remedy
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VMC12SB-1/VMH12SB-1, VMC18SB-1/VMH18SB-1, VMC24SB-1/VMH24SB-1, VMC09SB-1/VMH09SB-1, VMC30SB-1/VMH30SB-1 specifications

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