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Troubleshooting
Service manual
68
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
Possible failure
Root cause
Check
Repair
Water circuit partially
blocked.
Obstruction in the water
circuit.
Check water circuit for
blockages.
Remove possible blockages
and check the water
quality.
Root cause category: component – mechanical
Possible failure
Root cause
Check
Repair
Water pump mechanical
problem.
Internal pump friction.
Check water pump.
Replace water pump.
Air purge blocked - air
trapped in water circuit.
Component failure.
Check air purge valve.
Replace air purge valve.
Symptom: Incorrect water pump operation
Root cause category: software control
Possible failure
Root cause
Check
Repair
Unexpected water pump
behaviour.
Water pump software
control.
Water pump start/stop
conditions:
▪
During space heating
(cooling) or domestic hot
water off: the pump is
off,
▪
During space heating
(cooling) or domestic hot
water
on:
pump
operation depends on
setting
[F‑0D]
(continuous, sample or
request).
Remark: in domestic hot
water operation the pump
starts later than the
compressor to avoid that
the tank is cooled down by
the cold water loop.
Replace water pump.
Root cause category: parameter (setting)
Possible failure
Root cause
Check
Repair
Incorrect setting of pump
operation mode
(continuous, sample,
request) (setting [F‑0D]).
Incorrect setting.
Confirm setting [F‑0].
Adapt setting [F‑0] if
required (factory setting:
[F‑0]=1).
Summary of Contents for ALTHERMA
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