Daikin 3MKS50E3V1B Service Manual page 285

SiBE121135
Troubleshooting
Check No.01
Refer to P.325
Service Diagnosis
Troubleshooting for RA Indoor Unit - FTXG, FTXS, CTXS, FVXG, FVXS, FLXS, FDXS Series
Be sure to turn off the power switch before connecting or disconnecting
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Caution connectors, or parts may be damaged.
Check the air passage. Check the air passage.
Is there any short circuit? Is there any short circuit?
NO NO
Check the air filter. Check the air filter.
Dirty?
Is it very dirty?
NO NO
Check the dust accumulation on
Check the dust accumulation on
the indoor heat exchanger. the indoor heat exchanger.
Dirty?
Is it very dirty?
NO
NO
Check No. 01 Check No. 06
Check the indoor heat exchanger
Check the indoor heat exchanger
thermistor. thermistor.
Does it
As described in the
conform to the
thermistor characteristic
thermistor characteristic
chart?
chart?
YES YES
YES
YES
YES YES
YES YES
NO NO
Provide sufficient air passage.
Provide sufficient air passage.
Clean the air filter.
Clean the air filter.
Clean the indoor heat
Clean the indoor heat
exchanger. exchanger.
Replace the thermistor. Replace the thermistor.
Replace the indoor unit PCB.
Replace the indoor unit PCB.
(R7131) (R15715)
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