Daikin 2MXS40H2V1B Service Manual page 214

Troubleshooting for Outdoor Unit
Troubleshooting
Check No.17
Refer to P.215
Check No.19
Refer to P.216
Note: Refer to "Silicon Grease on Power Transistor / Diode Bridge" on page 240 for detail.
203
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. 19
Check the outdoor fan or
related.
OK
Radiation fin dirty?
Slightly dirty
Check No. 17
Check the installation condition.
A
(°C)
40 class 95
50 class 92.5
YES
Has the PCB been
replaced?
NO
Check the radiation fin
temperature.
Above A ˚C?
YES
NG
Too dirty
SiBE121123_A
YES
Check if silicon grease is
applied properly on the
radiation fin. If not, apply
the silicon grease.
NO
Replace the outdoor unit
PCB.
Replace the outdoor fan
motor.
Correct the connectors and
fan motor leads.
Replace the outdoor unit
PCB.
Clean up the radiation fin.
(R18320)
Service Diagnosis