Daikin Aurora Series Service Manual page 222

Troubleshooting by Error Code
∗1. Make a comparison between voltage measured by the pressure sensor and that read by the
Note:
CHECK 1
CHECK 12
209
A
Service Checker
CHECK 12
Compare the high pressure value checked with the Service Checker and
the actual value measured by pressure sensor (∗1).
Check
if the high
pressure value and
the actual value
measured by
pressure sensor
are the
same.
YES
-The high pressure sensor is normal, and pressure detection with the outdoor
unit main PCB is also normal.
-The high pressure has really become high.
CHECK 1 : Eliminate factors that cause the high pressure to rise.
pressure gauge.
(The pressure sensor makes measurement of voltage at its connector block to convert it to
pressure. )
CHECK 12
Refer to page 283.
Refer to page 297.
NO
SiUS341802E
Replace the outdoor unit
main PCB (A1P).
Service Diagnosis