Discharge Pressure Check; Outdoor Fan System Check - Daikin FTXN25KEV1B Service Manual

SiBE041102_A
5.9

Discharge Pressure Check

Check No.18

5.10 Outdoor Fan System Check

Check No.19 AC motor
Service Diagnosis

Discharge pressure check

High?
YES
Is the stop valve open?
YES
Is the connection pipe
deformed?
NO
Is the air
filter or indoor / outdoor
heat exchanger
dirty?
Not dirty
Check the outdoor fan system.
Does the outdoor fan
rotate?
YES
Does the
outdoor fan start just
after the power is
turned on?
NO
NO
NO
YES
Dirty
Check the
NO
fan motor lead wire
connector for secure
connection.
OK
Are the
resistance at
connector leads ∞?
1. red - black,
2. white - black
NO
Check the fan
capacitor for continuity.
No continuity
YES
Check
Replace the compressor.
Open the stop valve.
Replace the pipe installed at
the site.
Clean the dirty one.
Replace the compressor.
(R11718)
NG
Reconnect the
connector.
YES
Replace the fan
motor.
Continuity
Replace the fan
motor.
Replace the outdoor
unit PCB.
The outdoor fan
system is normal.
(R12010)
93