Symptom-Based Troubleshooting; Overview - Daikin ZQG71~140L7V1B Service Manual

ESIE12-06

2. Symptom-based Troubleshooting

2.1

Overview

Symptom
1 Equipment does not operate.
2 Indoor fan operates, but compressor does not
operate.
3 Cooling/heating operation starts but stops
immediately.
4 After unit shuts down, it cannot be restarted for a
while.
5 Equipment operates but does not provide
cooling.
6 Equipment operates but does not provide
heating.
7 Equipment discharges white mist.
8 Equipment produces loud noise or vibration.
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. It is normal. There is a control function that
15 Fan operates in "M" tap during heating even if
remote controller is set to "L" tap.
16 Flap automatically moves during cooling.
17 Indoor unit fan operates in "L" tap for 1 minute in
"program dry" mode even if compressor is not
operating.
18 Indoor unit fan operates after heating operation
stops.
19 Drain pump operates when equipment is not
operating.
20 Horizontal swing sends air to different directions
in cooling and heating even if it is set to the same
position.
21 Flap remains horizontal even if it is set to swing
mode.
22 When operating in remote control thermostat, the
thermostat turns off before temperature of
remote control reaches the set temperature.
Service Diagnosis

Symptom-based Troubleshooting

Details of Measures
Refer to P.112
Refer to P.114
Refer to P.116
Refer to P.117
Refer to P.119
Refer to P.121
Refer to P.123
Refer to P.124
Refer to P.125
Refer to P.126
Refer to P.127
Room smell and cigarette odors accumulated
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.
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 condensation prevention function or ceiling
soiling prevention function.
It is normal. The monitoring function forcibly
operates the fan for 1 minute.
It is normal. The fan operates in the "LL" tap 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 equipment is turned off.
It is normal. The airflow direction in cooling/dry
operation is different from that in heating/fan
operation.
It is normal. The flap does not swing in the
thermostat OFF mode.
Normal operation.
The thermostat may be controlled with the
suction temperature (body thermostat),
concurrently with the set temperature.
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