Trouble Shooting - Daikin FHQ50CBVEB Operation Manual

• When the air conditioner is changed over
to the HEATING OPERATION after the
DEFROST OPERATION and in the
DEFROST OPERATION.
Moisture generated by defrost becomes
steam and will float around.
When the remote controller display shows
" ", DEFROST OPERATION is being
used.
VII. NOISE OF AIR CONDITIONERS
• A ringing sound after the indoor unit
starts.
This sound is generated when the motors for
driving the horizontal blades are working.
It will quiet down after about a minute.
• A low continuous flow "Shuh" sound
which is heard when the air conditioner is
in the COOLING or DEFROST OPERA-
TION or a trickling sound which is heard
when the air conditioner is in the
DEFROST OPERATION.
This is the sound of refrigerant gas flowing
through both indoor and outdoor units.
• A "Shuh" sound which is heard at the
start or immediately after the stop of
operation or which is heard at the start or
immediately after the stop of the
DEFROST OPERATION.
This is the noise of refrigerant caused by flow
stop and flow change.
During the HEATING OPERATION, the air
conditioner switches to the DEFROST
OPERATION automatically.
The remote controller shows "
After maximum 10 minutes, the air condi-
tioner returns to its original operation.
• A "Pishi-pishi" squeaking sound is heard
when the air conditioner is in operation or
after the stop of operation.
Expansion and contraction of resin parts
caused by temperature change makes this
noise.
VIII. DUST FROM THE INDOOR UNITS
• Dust may blow out from the unit after
starting operation from long resting time.
Dust absorbed by the unit blows out.
IX. THE INDOOR UNITS GIVE OFF ODORS
• During operation
The unit absorbs the smell of rooms, furni-
ture, cigarettes, etc., and then emits them.
If odor is a concern, you can set to zero fan
speed when the indoor temperature reaches
the set temperature.
For details, contact your local dealer.
English
X. THE AIR CONDITIONER DOES NOT COOL
EFFECTIVELY
• The air conditioner is operating in the
PROGRAM DRY OPERATION.
This is because program dry mode operates
so that the indoor temperature decreases as
little as possible.
Lower the indoor temperature using the
COOLING OPERATION, and then use the
PROGRAM DRY OPERATION.
(Refer to "CHARACTERISTICS OF THE
PROGRAM DRY OPERATION" on page 7.)
• Read through characteristics of the
COOLING OPERATION, characteristics of
the HEATING OPERATION, and character-
istics of the PROGRAM DRY OPERATION
on page 6-7.
9-2. FXHQ
Read the operation manual that attached to the
outdoor unit.

10. TROUBLE SHOOTING

10-1. FHQ
Please check before requesting a service.
1. If the air conditioner does not operate at all.
• Check if fuse has blown.
Turn off the power supply.
• Check if the power circuit breaker is blown.
If the tab of power circuit breaker is in the OFF
".
position, turn the power on with the power cir-
cuit breaker switch.
If the tab of power circuit breaker is in the trip
position do not turn the power on with the
power circuit breaker switch.
Contact your local dealer.
• Check if there is a power failure.
Wait until power is restored. If power failure
occurs during operation, the air conditioner
automatically restarts immediately after the
power supply recovers.
ON
Trip position
OFF
Power circuit breaker
(Earth leakage breaker)
Tab
14