Daikin G-Series Service Manual page 148

Troubleshooting
Troubleshooting
Check No.07
Refer to P.149
Check No.09
Refer to P.150
RK(X)S20-35G2V1B, ARXS20-35G2V1B
RK(X)S20-35G2V1B9, ARXS20-35G3V1B
RK(X)S42G2V1B, ARXS42G2V1B
RK(X)S50G2V1B, ARXS50G2V1B
Note: Refer to "Application of silicon grease to a power transistor and a diode bridge" on page 297 for
detail.
137
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.
YES
Has PCB been replaced?
NO
Check the radiation fin
temperature.
Above A ˚C?
YES
NG
Too dirty
A (°C)
90
98
92.5
105
SiBE04-808_B
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)
Service Diagnosis