Daikin R71FUV1 Service Manual page 173

Si20-701_B
pressure sensor
properly connected to
the outdoor unit
RZQG
CHECK 7
Measure
voltage between
the connector pins
(1) and (3) of the
connector.
Is the relation
between low
pressure and
normal?
CHECK 3
Remove the
thermistor from the
indoor unit PCB and
measure the
resistance.
Is it normal?
CHECK 6
CHECK 7
166
A
Is the
PCB?
Remove the thermistor
from the outdoor unit PCB
YES
and measure resistance.
except RZQG
voltage
YES
YES
C
Refer to P.468.
Refer to P.470.
Troubleshooting by Remote Controller
B
NO YES
Is it normal?
CHECK 6
YES
NO
NO
Connect the
connector
properly.
NO
Replace the
group
thermistor.
Replace the
pressure
sensor.
Replace the
indoor unit
intermediate
thermistor.