Symptom Based Troubleshooting; Incorrect Energy Metering Read-Out; Water Pump Related - Daikin Altherma EBLQ011CAV3 Service Manual

1.5

Symptom based troubleshooting

1.5.1

Incorrect energy metering read-out

Root cause category: hardware
Possible failure
kWh values measured with field
supplied meters show different
values as the user interface.
Values on user interface are
incorrect, show strange values.
Values on user interface are
incorrect, show strange values.
Unit operates in emergency mode. Backup heater is allowed in
1.5.2

Water pump related

Increased water pump sound level
Root cause category: installation
Possible failure
Water filter blocked.
Air in the water circuit.
Water pressure too low.
Water circuit partially blocked.
Root cause category: component – mechanical
Possible failure
Water pump mechanical problem. Internal pump friction.
Air purge blocked - air trapped in
water circuit.
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Root cause
Backup heater wiring is NOT
correct.
User interface is replaced or reset
to factory settings; Previous
measurements are lost.
Hydro PCB is replaced or reset to
factory settings; Previous settings
are lost.
emergency mode, setting [4‑00].
Root cause
Dirty water.
NOT enough air purged.
▪ Water pressure NOT checked
during filling,
▪ Air was purged from the water
circuit after filling,
▪ Leakage.
Obstruction in the water circuit.
Root cause
Component failure.
Check
Check backup heater wiring, see
the installer reference guide.
Check if user interface is replaced
or reset.
Check if hydro PCB is replaced or
reset.
Check setting.
Check
▪ Check water filter,
▪ Check water quality.
▪ Check if all air purge valves are
open,
▪ Check if air purge valves are
installed on all highest points of
the field installed water circuit.
Check water pressure.
Check water circuit for blockages. Remove possible blockages and
Check
Check water pump.
Check air purge valve.
1 Troubleshooting
Repair
Adjust wiring if required.
Reset measurements of field
supplied electrical meters and
reset user interface and hydro
PCB to factory settings.
Reset measurements of field
supplied electrical meters and
reset user interface and hydro
PCB to factory settings.
If you do NOT want the backup
heater to run automatically in
emergency mode, adjust setting.
Repair
Clean the water filter.
Purge air out of the unit and field
supplied water system and backup
heater.
Adjust water pressure if required
(±2 bar).
check the water quality.
Repair
Replace water pump.
Replace air purge valve.
Service manual
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