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Maintenance: Protection codes
Maintenance
Protection codes
NOTICE
These codes indicate that the heat pump has stopped running due to external factors .
These codes do not indicate faults within the heat pump .
Display
.
Reason
E3
No water though the heat pump .
E4
Three phase sequence protection .
Supply voltage to heat pump is out of
E5
range .
Excessive temperature difference
between water inlet and outlet is
E6
caused by low water flow through the
heat pump .
Ambient air temperature is out of
Eb
range, either below -20
43
Frost protection .
The heat pump runs in heating mode
Ed
for a period when in standby mode to
prevent frost ~ ice build-up .
This does not replace winterisation .
Check water circuit and pool water
Qualified electrician to check the
three phases are connected correctly .
Check the water circuit and pool
If located outside, then wait for
the ambient conditions to improve
o
C or above
(winterisation may be required) .
o
C .
If located in a sheltered position,
The heat pump will return to standby
mode once the process is complete .
Solution
pump .
Check the power supply .
water pump .
check for air recirculation .
37
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