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What to do if a fault occurs
3-phase incorrect
Possible cause 1: One or two phases to the heat pump are down.
Action:
1.
Check that the fuses in the house's distribution box
have not blown.
2.
Replace the fuse if necessary. If you have miniature
circuit-breakers and these have tripped you reset
them by pushing up the toggle switch.
3.
The heat pump automatically returns to the operating
mode once the fault has been rectifi ed.
Possible cause 2: Phase sequence to the heat pump is incorrect.
(The alarm may only be rectifi ed by an electrician.)
Action:
1.
Press the Ackn. button.
2.
Switch the phase sequence on the incoming supply.
The heat pump starts automatically once the phase
sequence has been switched.
Heat transfer fl uid out max T8 (GT8)
There is a sensor T8 (GT8) in the heat pump, which for reasons of safety,
stops the compressor if the temperature of the water going out to the
radiators becomes higher than the set value.
Possible cause 1: Not enough fl ow over the heat pump.
Action:
1.
Check that the heat carrier pump has not jammed.
2.
Check that all the valves are open.
Possible cause 2: Particle fi lter is clogged.
Action:
1.
Clean the particle fi lter, see Maintenance.
If the power does not return on all
phases at the same time during
external electrical work, there is a risk
that the Rego control unit gives a false
alarm for a phase sequence error.
The heat pump starts automatically
when the temperature drops. The
alarm does not need to be acknowl-
edged, yet if you wish to access
the menus you can clear the alarm
window by acknowledging.
36
The menu display shows:
ALARM
3-phase incorrect
031020 16:08:15
Info
Ackn.
Note
The menu display shows:
ALARM
(GT8)
Heat tr. ß . out max
031020 16:08:15
Info
Ackn.
Note
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