Daikin SUPER MULTI NX CTXS07JVJU Service Manual page 195

Troubleshooting for Outdoor Unit
Troubleshooting
18 class
Check No.01
Refer to P.191
Check No.17
Refer to P.198
Check No.19
Refer to P.199
18 class
Note: Refer to "Application of silicon grease to a power transistor and a diode bridge" on page 267 for
detail.
187
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
(Precaution before turning on the power again)
Make sure the power has been off for at least 30 seconds.
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
194°F (90°C)
YES
Has PCB been replaced?
NO
Check No. 01
Check the thermistor resistance
value.
∗ Fin thermistor
As
described in the
thermistor characteristic
chart?
YES
Check the radiation fin
temperature.
Above A ?
YES
NG
Too dirty
SiUS12-928_B
YES
Check if the silicon grease
(∗) is applied properly on
the radiation fin. If not,
apply it.
∗
Silicon grease
Part No.: 1172698
NO
Replace the fin thermistor.
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.
(R17368)
Service Diagnosis