Daikin ESIE13-02 Service Manual page 133

ESIE13-02
Troubleshooting
(*) See also "Check No.11 - Outdoor Unit: Check for Power Transistor" on page 160.
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Check the
installation conditions.
NO
Is the stop valve open?
YES
Is the
difference between
NO
high and low pressure
before startup not more
than 0.2MPa?
YES
Turn the main power supply
off, and then disconnect the
connection between the
compressor and inverter.
Continuity check
NO
in the power transistor
(IGBT) Is the continuity
normal? (*)
YES
Is the
inverter output
voltage generated
approximately at the same NO
increasing speed on each
phase after turning * When operating compressor
on again? (* )
with compressor output line
(U-V, V-W,
disconnected, the compressor
W-U)
stops due to malfunction after
elapsed time of 5 seconds.
Therefore, check the voltage
increase for 5 seconds.
YES
133
Error Codes: Outdoor Units
Open the stop valve.
Insufficient pressure equalization
Check refrigerant system.
* Replace the inverter PC board (A1P)
ERHQ***V3* / ERLQ***V3*
* Replace the inverter PC Board (A2P)
ERHQ***W1* / ERLQ***W1*
* Replace the inverter PC board (A1P)
ERHQ***V3* / ERLQ***V3*
* Replace the inverter PC Board (A2P)
ERHQ***W1* / ERLQ***W1*
Compressor inspection
Inspect according to the diagnosis
procedure for abnormal noises,
vibration, operating status, etc. of the
compressor.
Part 4 – Troubleshooting
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