LG ACHH Series Manual page 92

Error code check
Error number Errors
107
Fan DC Link low
(11 → 071)
voltage error
n Failure diagnosis method
Is the connection
between an inverter board and
a fan board normal?
Yes
Is DC_Link voltage normal?
Yes
Is a fan board normal?
Yes
Power and installation environment
recheck
DC voltage connection
DC Volt connected
Meaning
In case where DC Link
voltage of a fan board is
permitted to less than
50 V
No
1. Confirm DC_Link wire connection
2. Confirm DC_Link disconnection → Replace wire when occurring a
problem
DC_Link voltage measurement → Check an inverter board in case of
No
less than 26Page
[Note] Check by CH23 error failure diagnosis method
No
Fan board replacement
- 92 -
Main cause of occurrence
1. Connection defect between an inverter board and a fan
board
2. Fan board defect [DC Link detection part]
3. Reactor terminal contact defect
4. DC Link terminal misconnection/ Terminal contact defect
(Loose)
5. 3 Phase bridge diode damage by a fire