Overview Of General Problems - Daikin FCQ35B7V1 Service Manual

ESIE05-04
1.3

Overview of General Problems

Overview
Part 3 – Troubleshooting
Equipment Condition
1 Equipment does not operate.
2 Fan operates, but compressor does not.
3 Cooling/heating operation starts but stops
immediately.
4 Equipment operates but does not provide
heating.
7 Equipment discharges white mist.
8 Equipment produces loud noise or shakes. See page 3-15
9 Equipment discharges dust.
10 Remote controller LCD displays "88."
11 Indoor swing flap does not operate.
12 Equipment emits odor.
13 Flap operates when power is turned on.
14 Change of operation mode causes flap to
move.
15 Fan operates in "M" mode during heating
even if remote controller is set to "Low."
16 Flap automatically moves during cooling.
17 Indoor unit fan operates in "L" mode for 1
minute in microcomputer-controlled dry
mode even if compressor is not operating.
18 In simultaneous ON/OFF multi-system
setup, indoor unit (sub) does not operate in
sync with the other indoor unit (main).
(Flat, fan, etc.)
19 Indoor unit fan operates after heating oper-
ation stops.
20 Drain pump operates when equipment is
not operating.
21 Horizontal swing sends air to different
directions in cooling and heating even if it
is set to the same position.
22 Flap remains horizontal even if it is set to
Swing.
Troubleshooting
Remedy
See page 3-6
See page 3-8
See page 3-10
See page 3-12
See page 3-14
See page 3-16
See page 3-17
See page 3-18
Room smell and cigarette odors accumu-
lated inside the indoor unit are discharged
with air. Inside of the indoor unit must be
cleaned.
It is normal. The flap initializes for accurate
positioning.
It is normal. There is a control function that
moves the flap when operation mode is
changed.
It is normal. It is caused by the activation of
the overload control (airflow shift control).
It is normal. It is caused by the activation of
the dew prevention function or ceiling soil-
ing prevention function.
It is normal. The monitoring function forci-
bly operates the fan for one minute.
It is normal. It is caused by a signal trans-
mission lag.
It is normal. The fan operates in the "LL"
mode for 60 to 100 seconds to dissipate
the residual heat in the heater.
It is normal. The drain pump continues to
operate for several minutes after equip-
ment is turned off.
It is normal. The airflow direction in cool-
ing/dry operation is different from that in
heating/fan operation.
It is normal. The flap does not swing in the
thermostat OFF mode.
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