Daikin Altherma EKHBH Series Service Manual page 116

Error Codes: Outdoor Units
1
Troubleshooting
3 3
4
5
Caution
3–30
Turn off the power and turn it on again.
Get the system started.
* Running current
as shown at right with relay
cable 1 or 2?
NO
Check No. 12
Check the capacitor voltage.
DC380±30V?
NO
Measure the rectifier input voltage.
Voltage within
the allowable range (Supply
voltage±15%)?
NO
See also: "Check No.12" on page 3-60
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
YES
Current Capacitor charged when
(guideline) the hydro-box or outdoor
unit main relay turns on
Rising with increasing
frequency
2 sec Time
YES
Turn off the power. Disconnect the
harnesses U, V and W.
Check with the inverter checker (∗).
Any LED off?
NO
Turn off the power and reconnect the above
harnesses. Then turn on the power again
and get the system restarted.
Compressor
running?
NO
YES
ESIE06-03
Replace the outdoor unit PCB.
∗ Inverter checker
Part No.: 1225477
YES
Correct the power supply or
replace the PM1.
(Replace the outdoor unit
PCB.)
YES
Replace the outdoor unit PCB.
Replace the compressor.
Replace the outdoor unit PCB.
Check the supply voltage.
Part 3 – Troubleshooting