Daikin Altherma EBLQ011CAV3 Service Manual page 34

1 Troubleshooting
Possible failure
Incorrect setting of unit control
method (setting [C‑07]).
Incorrect setting of space heating
OFF temperature (setting [4‑02]).
Preferential kWh rate power supply
settings and electrical connections
do NOT match.
Root cause category: component – electrical
Possible failure
Hydro PCB NOT operational.
Reactor coil broken.
Root cause category: hardware
Possible failure
Cooling/heating operation starts,
but stops immediately.
Service manual
34
Root cause
Incorrect setting of unit control
method (setting [C‑07]) (leaving
water control, room thermostat
control, ext. room thermostat
control).
Incorrect setting of space heating
OFF temperature (setting [4‑02]).
Preferential kWh rate power supply
settings and electrical connections
do NOT match.
Root cause
▪ No power supply,
▪ Faulty transformer,
▪ Hydro PCB malfunction.
Component problem.
Root cause
▪ Refrigerant overcharge,
▪ Mixing of air in refrigerant
system.
Check
Check if setting [C‑07] (leaving
water control, room thermostat
control, ext. room thermostat
control) is in set according to the
application.
Check if setting space heating
OFF temperature (setting [4‑02]) is
correct (keep at 35°C).
Check preferential kWh rate power
supply settings and electrical
connections (see installer
reference guide).
Check
▪ Confirm that HAP led is blinking
in regular intervals,
▪ Confirm power supply towards
hydro PCB,
▪ Check good operation
transformer.
Check continuity of the reactor coil. Replace the reactor coil in case
Check
Check refrigerant.
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
Repair
Repair
▪ Re-establish power to hydro
PCB.
Replace hydro PCB in case power
supply and transformer are OK but
led is NOT blinking.
of
faulty.
Repair
After vacuum drying, charge
correct amount of refrigerant.
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02