Daikin EBLA16DA3V3 Service Manual

2 | Troubleshooting
Service manual
78
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
Possible failure Root cause Check Repair
Air in the water circuit. NOT enough air purged. ▪ 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.
Purge air out of unit and
field supplied water system
and backup heater.
Water circuit (partially)
blocked.
Dirty water. Check water circuit (unit +
field) for blockages.
Remove possible blockages
and check the water
quality.
Root cause category: component – mechanical
Possible failure Root cause Check Repair
Refrigerant shortage. ▪ Refrigerant leakage,
▪ Incorrectly charged.
▪ Check refrigerant charge,
▪ Pressure test the system
to check for leakage.
If required, repair the leak
and charge the correct
refrigerant amount.
Air Purge blocked - air
trapped in water system.
Component failure. Check air purge valve. Replace air purge valve.
Root cause category: component – electrical
Possible failure Root cause Check Repair
Refrigerant pressure
sensor - higher pressure
measured than actual.
Deviation of refrigerant
pressure sensor (higher
value measured than
actual).
Check refrigerant pressure
sensor.
Replace refrigerant
pressure sensor.
Discharge pipe thermistor
– higher temperature
measured than actual.
Deviation of thermistor
(higher temperature
measured than actual).
Check discharge pipe
thermistor.
Replace discharge pipe
thermistor or replace PCB.
Expansion valve incorrect
control - superheat too
high.
▪ Faulty suction
thermistor,
▪ Faulty expansion valve
control.
▪ Check suction
thermistor,
▪ Check the expansion
valve.
Replace suction thermistor
or replace expansion valve.
Backup heater NOT
working.
Component failure. Check backup heater. Replace backup heater.
Deviation of outlet water
after backup heater
thermistor will influence
the backup heater control.
▪ Deviation of thermistor
(higher temperature
measured than actual),
▪ Bad contact between
sensor and pipe.
Check outlet water after
backup heater thermistor.
Replace outlet water after
backup heater thermistor
or PCB A1P.
Flow sensor deviation –
flow measured higher than
actual.
Component failure. Check the flow sensor. Replace the flow sensor.
3‑way valve blocked. Component failure. Check the 3‑way valve. Replace the 3‑way valve.

Daikin EBLA16DA3V3 Specifications

General

Brand	Daikin
Model	EBLA16DA3V3
Category	Heat Pump
Language	English