ESIE13-02
Error Codes: Outdoor Units
131
Part 4 – Troubleshooting
4
3
4
5
4
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.
Turn the main power supply
off, and then disconnect the
connection between the
compressor and inverter.
Is the
secondary
current of the inverter
higher than * A (see below)
for each
phase?
Is the
inverter
output voltage
generated
approximately at the same
increasing speed on each
phase after turning
on again? (* )
(U-V, V-W,
W-U)
Continuity check
in the power transistor
(IGBT) Is the continuity
normal? (*)
YES
NO
NO
YES
NO
* When operating compressor
with compressor output line
disconnected, the compressor
stops due to malfunction after
elapsed time of 5 seconds.
Therefore, check the voltage
increase for 5 seconds.
ERHQ011~016*V3
Cooling
Heating
Detection value
31A 5 seconds or 20.1A 260 seconds
Compressor overload
Inspection of the compressor and
refrigerant system is required.
Replace the inverter PC board
(A1P) ERHQ***V3* / ERLQ***V3*
.
(A2P) ERHQ***W1* / ERLQ***W1*
Replace the inverter PC board
(A1P) ERHQ***V3* / ERLQ***V3*
.
(A2P) ERHQ***W1* / ERLQ***W1*
Compressor inspection
Inspect according to the diagnosis
procedure for abnormal noises,
vibration, operating status, etc.
of the compressor.
* Electronic thermal detection value
YES
ERHQ011~016*W1
Cooling
Heating
17A 5 seconds or 10.6A 260 seconds
17A 5 seconds or 12.6A 260 seconds
