5�2 Protection Codes - Calorex IPT 8 Series Owners & Installation Manual

5�2 PROTECTION CODES
These codes indicate machine stopping due to external circumstances�
These are not faults with the heat pump�
No Display
1 E3
2 E4
3 E5
4 E6
5 Eb
5 Ed
1005494 ISSUE 3
Reason
No water flow through the heat pump.
Three phase rotation protection.
Voltage of power supply to heat pump is out
of range.
Low water flow indicated by more than 10°C
difference in inlet and outlet temperature.
Ambient temperature is out of range, either
lower than -5°C (-10°C Y version) or higher
than 43°C.
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.
Solution
Check water circuit and pool pump.
Check phases connected correctly (Electrician
required)
Check the power supply.
Check water flow and pool pump.
If outside, wait for ambient conditions to improve
(winterisation may be required). If installed in a
sheltered place, check for air recirculation.
Heat pump will resume standby once process is
completed.
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