Part 4 Trouble Shooting

 

 

 

 

Error code

Description

Cause of error

 

 

 

 

 

8

Indoor fan is locked

• Indoor fan is locked or separated

 

(BLDC fan model only)

• Fan connector is not connected to indoor pcb assembly

 

 

• Defective DC-fan driving circuit

 

 

 

 

 

Check flow

Indoor fan is rotating ? (1)

No

Check indoor unit

-remove obstacles in indoor unit

-fan assembled correctly.

YES

Indoor fan is rotating ? (2)

No

Check soldering state of CN-Motor1 & assembling state of DC Fan connector

YES

DC–fan driving circuit is right ?

No

Check DC Fan Driving circuit (Soldering state & Direction)

-R01F~R09F, C01F~C03F, IC01F~IC03F, Q01F~Q02F, ZD01F

Error code

Description

Cause of error

 

 

 

9

Outdoor fan is locked

• Outdoor fan is locked by an obstacle (ex : branch of tree, bar…etc)

(BLDC fan model only)

• Fan connector is not connected to outdoor pcb assembly

 

• Defective in DC-fan driving circuit

 

 

 

Check flow

YES

Outdoor fan is rotating ? (1)

No

Check outdoor unit

-remove obstacles in outdoor unit

Outdoor fan is rotating ? (2)

No

Check connector is not connected to outdoor pcb assembly (CN-FAN2)

YES

DC–fan driving circuit is right ?

No

Check DC Fan driving circuit (Soldering state & Direction)

-R01F~R05F, C01F~C03F, Q01F~Q04F, ZD01F

- 53 -

Only for training and service purposes

Page 53
Image 53
Heat Controller VMC24SB-1/VMH24SB-1, VMC09SB-1/VMH09SB-1 service manual Description Cause of error Indoor fan is locked

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