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Page 57
Alarm
Code
Fault
Possible Cause(s)
Suggested Action(s)
Action By
User
Engineer
TP
Low Ambient Temperature Warning
The ambient temperature is too low.
Test the operation of the
ambient temperature sensor and
re-connect/replace if necessary.
E003
Driver Board Self Test
There is a fault affecting the Fan Motor
Check the operation of the fan
and check the connections.
E04
Electric Overheat Protection
The compressor is overloaded.
Check the operation of the
refrigeration circuit in terms of
gas pressure and charge.
E08
Communication Error
There is a communication error between the
controller and the unit.
Check the wiring and
connections between the
controller and the unit.
E11
High Pressure Protection
The high pressure switch in the refrigeration
circuit has been tripped.
Check the operation of the high
pressure switch and refrigeration
circuit in terms of gas pressure.
E12
Low Pressure Protection
The low pressure switch in the refrigeration
circuit has been tripped.
Check the operation of the low
pressure switch and refrigeration
circuit in terms of gas pressure.
E19
Primary Anti-freezing Protection
The ambient temperature is low.
Test the operation of the
ambient temperature sensor and
re-connect/replace if necessary.
E29
Secondary Anti-freezing Protection
The ambient temperature is low.
Test the operation of the
ambient temperature sensor and
re-connect/replace if necessary.
E032
Low Flow Error
There is not enough flow in the heating circuit.
Check the plumbing circuit for
blockages or air, valves are
open and the operation of the
circulating pump.
E051
Compressor Overload
The compressor is overloaded.
Check the operation of the
refrigeration circuit in terms of
gas pressure and charge.
E065
Outlet Water Temp. Overtemp.
The temperature of the outlet water is too high.
Check there is enough water in
the system and there are no air
locks/lack of flow.
Summary of Contents for A Series
Page 36: ...Page 34 Figure 24 AS02 R32 Casing Dimensions Heating Connection Locations FRONT SIDE TOP...
Page 40: ...Page 38 Figure 26 Heating DHW Schematic Figure 27 Heating Only Schematic...
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