Daikin SkyAir RZR-TA Series Service Manual page 262

Troubleshooting by Error Codes
Troubleshooting
Reference
CHECK 2 Refer to page 293.
Reference
CHECK 12 Refer to page 304.
256
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Is the stop
valve open?
YES
(1)Mount a pressure gauge on the low pressure
service port.
(2)Reset the operation using the remote
controller, and then restart the operation.
CHECK 12
Compare the voltage
measurement of the connector
of the pressure sensor ( 1) with the
measurement of the pressure
gauge. Are the characteristics
of the low pressure
sensor normal?
YES
Service Checker CHECK 12
Connect the service checker, and then compare the low pressure value
measured by the service checker with the voltage measurement of the
connector of the pressure sensor ( 1)
Are both
pressure values the
same?
YES
- The low pressure sensor is normal, and outdoor unit main PCB is also normal.
- The low pressure has really become low.
CHECK 2
: Eliminate factors that cause the low pressure to fall.
NO
Open the stop valve.
NO
Replace the low pressure sensor
(S1NPL).
( 1) Use the table on
CHECK 12
the voltage measurement into pressure
measurement.
NO
Replace the outdoor unit main
PCB (A1P).
SiUS281811EA
to convert
Part 6 Service Diagnosis