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FOR THE USER
Power failure (3-phase)
The heat pump maintains all its settings in case of a power failure. When the
power returns the heat pump automatically starts up according to the previous
settings.
Possible cause: 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. Change 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.
3-phase incorrect (3-phase)
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. Change 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.
High Heat transfer fl uid delta T8/T9 (GT8/GT9)
The heat pump gives an alarm when the temperature difference between the
sensors T8 (GT8) and T9 (GT9) is too high.
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. The thermostat
valves accord. to clockeating systems should be fully
open and in fl oor heating systems at least half of the
coils should be fully open.
Possible cause 2: The particle fi lter on the hot side is clogged.
Action: 1. Clean the particle fi lter.
What to do if a fault occurs
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.
Note
Alarm
Power failure
040622 16:08:15
Info Ackn.
Alarm
3-phase incorrect
040622 16:08:15
Info Ackn.
Alarm GT8/GT9
High HTF delta
040622 16:08:15
Info Ackn.
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