13
|
Troubleshooting
Installer reference guide
211
EPRA14~W1 + ET9W
Daikin Altherma 3 H HT F
4P587503-1A – 2020.01
13.3.2 Symptom: Hot water does NOT reach the desired temperature
Possible causes
Corrective action
One of the tank temperature sensors is
broken.
See the service manual of the unit for
the corresponding corrective action.
13.3.3 Symptom: The compressor does NOT start (space heating or domestic water heating)
Possible causes
Corrective action
The compressor cannot start if the
water temperature is too low. The unit
will use the backup heater to reach the
minimum water temperature (12°C),
after which the compressor can start.
If the backup heater doesn't start
either, check and make sure that:
▪
The power supply to the backup
heater is correctly wired.
▪
The backup heater thermal protector
is NOT activated.
▪
The backup heater contactors are
NOT broken.
If the problem persists, contact your
dealer.
The preferential kWh rate power supply
settings and electrical connections do
NOT match
This should match with the connections
as explained in:
▪
"8.3.1 To connect the main power
supply"
▪
"8.1.4 About preferential kWh rate
power supply"
▪
The preferential kWh rate signal was
sent by the electricity company
In the user interface of the unit, go to
[8.5.B]
Information
>
Actuators
>
Forced off contact
.
If
Forced off contact
is
On
, the
unit is operating under the preferential
kWh rate. Wait for the power to return
(maximum 2 hours).
13.3.4 Symptom: The system is making gurgling noises after commissioning
Possible cause
Corrective action
There is air in the system.
Purge air from the system.
(a)
Various malfunctions.
Check if or
is displayed on the
home screen of the user interface. See
"13.4.1 To display the help text in case
of a malfunction"
215] for more
information about the malfunction.
(a)
We recommend to purge air with the air purge function of the unit (to be performed by
the installer). If you purge air from the heat emitters or collectors, mind the following:
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