Daikin ERLA03DAV3, Installer'S Reference Manual, Page: 158 / 192

13 | Troubleshooting
Installer reference guide
158
ERLA EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596821-1A – 2020.05
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.
13.3.3 Symptom: The pump is blocked
Possible causes Corrective action
If the unit has been powered off for a
long time, lime might block the rotor of
the pump. Use a Philips No. 2 screwdriver to push
the deblocking screw of the rotor in
(0.5 cm). Then turn the deblocking
screw back and forth until the rotor is
deblocked.
(a)
Note: Do NOT use excessive force.
2
2
1
(a)
If you cannot deblock the rotor of the pump with this method, you will need to
disassemble the pump and turn the rotor by hand.
13.3.4 Symptom: The pump is making noise (cavitation)
Possible causes Corrective action
There is air in the system Purge air manually on both zones (see
"To perform a manual air
purge"
[
4
142]) or use the automatic air
purge function on both zones (see "To
perform an automatic air
purge"
[
4
142]).