Daikin RWEYQ26PY1 [235/342] Troubleshooting

Daikin RWEYQ30PY1 [235/342] Troubleshooting
Troubleshooting by Indication on the Remote Controller Si30-813
224 Troubleshooting
Troubleshooting
NO
NO
Set up a pressure gauge in the service port on the low pressure side.
Connect the Service Checker.
Reset operation with a remote controller and restart operation.
Are the
low pressure
sensor characteristics
normal?
(1)
Is the
PC board detector
pressure normal?
(2)
Replace the main PC board.
Replace the low pressure sensor.
1 : Compare pressure sensor measurements with pressure gauge readings.
(For measurements by a pressure sensor, measure voltage between connectors (2)
and (3) and convert it to pressure in accordance with page 311.)
2 : Compare low pressure measured by the Service Checker with pressure sensor
measurements (refer to 1).
CHECK 2
: Refer to page 262 to eliminate
the causes of low pressure drop.
In cooling
NO
NO
Connect the Service Checker.
After resetting operation with a remote
controller, restart operation.
Is
PC board detection
temperature normal?
(4)
Replace the main PC board.
Replace the thermistor.
3 : Compare the thermistor resistance with surface thermostat measurements.
4 : Compare the suction pipe temperature checked by the Service Checker with
measurements obtained in 3 above.
In heating
Are
characteristics
of the suction pipe thermistor
(R2T) and the heat exchanger
thermistor (R4T)
normal?
(3)
CHECK 3
: Refer to page 263 to eliminate
the causes of overheat operation.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.

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