131
[P05] [Power source trouble]
[P07] [Heat sink overheat trouble]
[P15] [Gas leak detection]
Check code
Outdoor LED
indication
Check and Action procedure
(No specific description indicates outdoor unit parts.)
Check outdoor control board
If defective, replace it
Check electric work
No
Yes
Power voltage is normal
AC220-240 V±10%
PC board
<401, 601> MCC-1768
<801, 1101> MCC-1675, MCC-1705
YES
Apply radiation grease
to objective, retightening
of screw
YES
Remove blocking matter,
Short circuit improvement
NO
NO
Is there any looseness in the screw
stop of the heat sink?
Are radiation grease properly applied?
Does something block the
ventilation around the heatsink?
Does something block air flow
from the fan?
(Short circuit etc.)
Check outdoor control board
If defective, replace it
PC board
<401, 601> MCC-1768
<801, 1101> MCC-1705
Check outdoor control board
If defective, replace it
No gas leakage.
Appropriate refrigerant amount
Correct defective portion
Re-charge refrigerant
No
Yes
Pulse motor valve is normal
Correct defective portion
Replace defective parts
No
Yes
Service valve is fully opened
Open fully service valve
No
Yes
Piping collapse
Repair or replace pipe
Yes
No
Temperature sensor check
Discharge sensor
Suction sensor
Correct connector
Replace sensor
NG
OK
PC board
<401, 601> MCC-1768
<801, 1101> MCC-1675
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