Daikin FTXL20G2V1B Service Manual page 124

SiENBE04-925_A
Troubleshooting
Check No.07
Refer to P.121
Check No.09
Refer to P.122
RXL20G2V1B
RXL20G2V1B9
RXL25G2V1B
RXL35G2V1B
Note: Refer to "Application of silicon grease to a power transistor and a diode bridge" on page 271 for
detail.
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Turn off the power and turn it on
again to start the system.
Error displayed again?
NO
Check No. 09
Check the outdoor unit fan or
related.
OK
Radiation fin
dirty?
Slightly dirty
Check No. 07
Check the installation condition.
(°C)
90
98
92.5
105
YES
Has PCB been replaced?
NO
Check the radiation fin
temperature.
Above °C?
YES
NG
Too dirty
Troubleshooting
YES
Check if the silicon grease
applied properly on the
radiation fin. If not, apply it
(∗). (See Note.)
∗ Silicon grease
Part No.: 1172698
NO
Check the power transistor
and the radiation fin for
looseness. If they are found
to be fit tightly, replace the
outdoor unit PCB or the
power transistor.
Replace the fan motor.
Correct the connectors and
fan motor leads.
Replace the outdoor unit
PCB.
Clean up the radiation fin.
(R12001)
109