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5. Trouble Shooting
6.18 Check code Trouble shooting CH40
V
Check the input power
AC230V
(Outdoor, Indoor unit)
Is it normal ?
( 230V±10%)
Change main PCB
Check “C01N”
Is it normal (4.0Vdc )?
Check Check TRANS
Is it normal?
Yes
Yes
Yes
No
Correct connection
No
Change Main PCB
No
Change TRANS
Check Flow Chart
TRANS
C01N
→
40
C/T
Internal circuit
• Initial current error
• Malfunction of current detection circuit.
(Open / Short)
• The voltage of “C01N” Is 4.0Vdc (25A) .
Display
code
Title Cause of error Check point & Normal condition
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