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Only for training and service purposes
Part 4 Trouble Shooting
8
• Indoor fan is locked or separated
• Fan connector is not connected to indoor pcb assembly
• Defective DC-fan driving circuit
Indoor fan is locked
(BLDC fan model only)
Indoor fan is rotating ? (1) Indoor fan is rotating ? (2)
YES
No
Check indoor unit
- remove obstacles in
indoor unit
-
fan assembled correctly.
No
Check soldering state of
CN-Motor1 & assembling
state of DC Fan connector
Check flow
DC–fan driving circuit is right ?
YES
No
Check DC Fan Driving circuit
(Soldering state & Direction)
- R01F~R09F, C01F~C03F,
IC01F~IC03F, Q01F~Q02F, ZD01F
9
• Outdoor fan is locked by an obstacle (ex : branch of tree, bar…etc)
• Fan connector is not connected to outdoor pcb assembly
• Defective in DC-fan driving circuit
Outdoor fan is locked
(BLDC fan model only)
Outdoor fan is rotating ? (1) Outdoor fan is rotating ? (2)
YES
No
Check outdoor unit
- remove obstacles in
outdoor unit
No
Check connector is not
connected to outdoor pcb
assembly (CN-FAN2)
Check flow
DC–fan driving circuit is right ?
YES
No
Check DC Fan driving circuit
(Soldering state & Direction)
- R01F~R05F, C01F~C03F,
Q01F~Q04F, ZD01F
Description Cause of error
Error code
Description Cause of error
Error code