Equipment Discharges White Mist - Daikin ZQG71~140L7V1B Service Manual

ESIE12-06
2.8

Equipment Discharges White Mist

Applicable Model All models of SkyAir series
Supposed
 Humid installation site
Causes  Installation site is dirty and with dense oil mists.
 Soiled heat exchanger
 Clogged air filter
 Defective fan motor
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the room
temperature higher than set
value in cooling
operation?
NO
Is the
heat exchanger of indoor
unit soiled?
NO
Is the site dusty or
with dense oil mist?
NO
Is the airflow
rate too small?
NO
Did the trouble generate on switching
to heating mode after complete of
defrosting during heating?
Service Diagnosis
YES
Continue the unit operation.
Is white mist coming
out from the unit?
YES
It may be necessary to remove the
source of humid condition.
YES
YES
Dust or oil mists should be removed.
Possible causes as follows
YES
* Clogged air filter
* Defective fan motor
Symptom-based Troubleshooting
NO
Normal
Remove the source of humid
condition.
Cleaning of heat exchanger is
necessary.
Remove the source of oil mist or
dust.
Cleaning of air filter
Check the fan motor.
(Refer to troubleshooting
"A6")
Normal
(Mist is generated due to
defrosting operation)
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