Daikin EPRA10EAV3, Installer'S Reference Manual

Page: 253 / 304

14 | Troubleshooting
Installer reference guide
253
EPRA08~W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1B – 2022.07
Possible causes Corrective action
Domestic hot water (including
disinfection) and space heating
operation are scheduled to start at the
same time. Change the schedule to not start both
operation modes at the same moment.
14.3.4 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)
Incorrect hydraulic balance. To be performed by the installer:
1 Perform hydraulic balancing to
assure that the flow is correctly
distributed between the emitters.
2 If hydraulic balancing is not
sufficient,
change the pump
limitation settings ([9-0D] and [9-0E]
if applicable).
Various malfunctions. Check if or is displayed on the
home screen of the user interface. See
"14.4.1 To display the help text in case
of a malfunction"
[
4
257] 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:
WARNING
Air purging heat emitters or collectors. Before you purge air from heat emitters or
collectors, check if or is displayed on the home screen of the user interface.
▪
If not, you can purge air immediately.
▪
If yes, make sure that the room where you want to purge air is sufficiently
ventilated.
Reason: Refrigerant might leak into the water circuit, and
subsequently into the room when you purge air from the heat emitters or
collectors.