Daikin ERLA03DAV3 User Manual

14 | Troubleshooting
Installer reference guide
178
ERLA03DAV3 + EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596821-1B – 2021.10
14.3.2 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 compressor cannot start in cooling
mode if the water temperature is too
low (<12°C).
Wait until the temperature is above
12°C. The water pump will continue to
operate to sample the inlet water.
The preferential kWh rate power supply
settings and electrical connections do
NOT match
This should match with the connections
as explained in:
▪ "9.3.1 To connect the main power
supply"[494]
▪ "9.1.4 About preferential kWh rate
power supply"[489]
▪ "9.1.5 Overview of electrical
connections except external
actuators"[489]
The preferential kWh rate signal was
sent by the electricity company
Wait for the power to return (maximum
2hours).
14.3.3 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 is displayed on the home
pages of the user interface. You can
press to display 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:

Daikin ERLA03DAV3 Specifications

General

Brand	Daikin
Model	ERLA03DAV3
Category	Air Conditioner
Language	English