1 Troubleshooting
Service manual
34
EBLQ+EDLQ011~W1 + EBLQ+EDLQ011~0W1
+ EK(2)CB EKMB9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Possible failure
Root cause
Check
Repair
Incorrect setting of unit control
method (setting [C‑07]).
Incorrect setting of unit control
method (setting [C‑07]) (leaving
water control, room thermostat
control, ext. room thermostat
control).
Check if setting [C‑07] (leaving
water control, room thermostat
control, ext. room thermostat
control) is in set according to the
application.
Incorrect setting of space heating
OFF temperature (setting [4‑02]).
Incorrect setting of space heating
OFF temperature (setting [4‑02]).
Check if setting space heating
OFF temperature (setting [4‑02]) is
correct (keep at 35°C).
Preferential kWh rate power supply
settings and electrical connections
do NOT match.
Preferential kWh rate power supply
settings and electrical connections
do NOT match.
Check preferential kWh rate power
supply settings and electrical
connections (see installer
reference guide).
Root cause category: component – electrical
Possible failure
Root cause
Check
Repair
Hydro PCB NOT operational.
▪ No power supply,
▪ Faulty transformer,
▪ Hydro PCB malfunction.
▪ Confirm that HAP led is blinking
in regular intervals,
▪ Confirm power supply towards
hydro PCB,
▪ Check
good
operation
of
transformer.
▪ Re-establish power to hydro
PCB.
Replace hydro PCB in case power
supply and transformer are OK but
led is NOT blinking.
Reactor coil broken.
Component problem.
Check continuity of the reactor coil. Replace the reactor coil in case
faulty.
Root cause category: hardware
Possible failure
Root cause
Check
Repair
Cooling/heating operation starts,
but stops immediately.
▪ Refrigerant overcharge,
▪ Mixing of air in refrigerant
system.
Check refrigerant.
After vacuum drying, charge
correct amount of refrigerant.