Daikin GQI-Eco Series, Руководство по обслуживанию

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ESIE15-13B Symptom-based Troubleshooting
Service Diagnosis 103
Troubleshooting
Output
from
PCB
Indoor unit
PCB
Outdoor unit
PCB
Relay
(1)
Output from
magnetic
switch or
U,V,W of
power
transistor
(2)
Output from
magnetic
switch or SW
circuit of
power
transistor
(3)
Output from
relay or
micro-
computer
Input
to
PCB Input
to
PCB
COMP
Turn ON the power switch or
replace the fuse.
· Indoor unit fan runs at set airflow rate.
· (In cooling operation)
When suction air thermistor temperature is higher than set temperature
· (In heating operation)
When suction air thermistor temperature is lower than set temperature
Check the thermistor.
YES
NO
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
NO
YES
NO
Replace the compressor.
YES
Replace the PCB.
YES
NO
Replace the magnetic switch or
power transistor.
YES
NO
Is the power
switch OFF or the fuse for power
switch blown?
Is the heating
switch turned ON at outdoor
temperature > 32˚C
(1)
Is rated voltage
applied at the compressor
terminals?
(2)
Is rated voltage
output from the magnetic switch
or power transistor?
(3)
Is rated voltage output
from the PCB?
Suction air
thermistor
Normal.
(Thermostat OFF by outdoor
temperature)
Magnetic
switch