Daikin CTXU25G2V1B Service Manual page 111

Troubleshooting
Troubleshooting
Check No.29
Refer to P.171
[Installation]
108
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
[Power supply]
Is the capacity of
safety breaker as
specified?
YES
Does the earth leakage
breaker work?
NO
Is it an exclusive circuit?
YES
Is the size of wire for
the exclusive circuit as
specified?
YES
Is the supply voltage
within the rated voltage
±10%?
YES
Is there required
installation space? (Isn't it
short circuited?)
YES
Is the size of the
connecting wire as
specified?
YES
Check No. 29
Short circuit check
Is it OK?
YES
· Air is mixed in.
· Overfilling of refrigerant is
supposed.
NO
YES
NO
NO
NO
NO
NO
NO
Remove the fan motors or the
four way valve coil and check.
Check No. 29
Short circuit check
Is it OK?
YES
SiBE12-908
Replace the safety breaker
to a specified one.
Increase the set value of
the earth leakage current
on the breaker (or replace
the breaker).
Use the exclusive circuit.
Replace the wire to a
specified one by referring to
the electric wire distance
described in the installation
manual.
Contact with an electric
power company.
Secure the required space.
Replace the wire to the
specified one.
NO
Replace the outdoor unit
PCB.
Replace the fan motor or
the four way valve coil.
Conduct vacuum drying, fill
the refrigerant of specified
volume.
(R9432)
Service Diagnosis