Daikin SkyAir RZQ-TA Series, Service Manual

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NO
YES
NO
YES
YES
Is the stop
valve open?
Open the stop valve.
(1) Mount a pressure gauge on the low pressure
service port.
(2) Reset the operation using the remote
controller, and then restart the operation.
Are the
characteristics of the
low pressure
sensor normal?
(
!
1)
Replace the low pressure sensor.
· The low pressure sensor is normal, and the pressure
detected with the PCB is also normal.
· The low pressure has really become low.
Remove the causes by which the low pressure
has become low.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Replace the outdoor main
PCB (A1P).
NO
Compare the low pressure value checked with the Service
Checker and the actual value measured by pressure sensor
(
!
1).
Service Checker
CHECK 2
Check if
the low pressure
value and the actual value
measured by pressure
sensor are the
same.
NO
YES
Eliminate the indoor unit error.
Is the
indoor unit failing?
(Does the remote controller
display an error other
than E4 ?)
CHECK 12
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