24
1005759 ISSUE 2
OWNER/INSTALLATION MANUAL
NO
�
Display
Reason
Solution
1
Er 03
No water flow through the heat pump.
Check water circuit and pool pump.
2
Er 04
Frost protection. The heat pump runs in heating mode
for a short time when in standby mode to prevent
frost build up.
This does not replace winterisation.
Heat pump will resume standby
once process is completed.
3
Er 21
Ambient temperature is out of range, either lower
than -5°C or higher than 43°C.
If outside, wait for ambient
conditions to improve (winterisation
may be required). If installed in
a sheltered place, check for air
recirculation.
4
Er 27
The temperature difference between inlet and outlet
water is more than 10°C
Check water flow and pool pump.
5�2 PROTECTION CODES
These codes indicate machine stopping due to external
circumstances. These are not faults with the heat
pump.
