Daikin EHFH03S18DA3V [172/204] Troubleshooting

Daikin EHFH03S18DA3V [172/204] Troubleshooting
13 | Troubleshooting
Installer reference guide
172
ERLA03DAV3 + EHFH03S18DJ3V
Daikin Altherma 3 R F
4P596806-1A – 2020.05
13.3.2 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:
"8.3.1 To connect the main power
supply"[493]
"8.1.5 About preferential kWh rate
power supply"[488]
"8.1.6 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).
13.3.3 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)
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:
WARNING
Air purging heat emitters or collectors. Before you purge air from heat emitters or
collectors, check if an error or is displayed on the home pages 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.

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