Daikin EHYHBH05AAV3 Service Manual page 110

Error Codes: Outdoor Units
1
Troubleshooting
3
4
5
Caution
Part 4 – Troubleshooting
Check the installation
conditions.
Is the
stop valve
open?
YES
Is the
UVW wiring
normal?
YES
Is
high pressure
higher than 2.6 MPa at
starting?
NO
Check
and see whether
compressor is short-circuited
or ground.
NO
Are
inverter output
voltages the same for
3 phases?
YES
Does low
or high pressure
vary even instantaneously
when restarting
compressor?
NO
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
NO
Open the stop valve.
NO
Connect correctly.
YES
Remedy the cause.
YES
Replace the compressor.
NO
Replace the inverter PC board (A1P) ERHQ***V3* / ERLQ***V3*
YES
Replace the compressor.
110
ESIE13-02A
(A2P) ERHQ***W1* / ERLQ***W1*