IVT Greenline HT PlusC User Manual

37
FOR THE USER
Power failure
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 operating
mode once the fault has been rectifi ed.
Phase sequence fault
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 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 thermo-
stat valves in heating 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 pha-
ses 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
The menu display shows:
ALARM
Power failure
040622 16:08:15
Info Ackn.
The menu display shows:
ALARM
3-phase incorrect
040622 16:08:15
Info Ackn.
The menu display shows:
ALARM GT8/GT9
High HTF delta
040622 16:08:15
Info Ackn.

IVT Greenline HT PlusC Specifications

General

Brand	IVT
Model	Greenline HT PlusC
Category	Heat Pump
Language	English