What To Do If A Fault Occurs; Dimmed Menu Display - IVT Greenline HT Plus C Assembly, Commissioning And Maintenance Manual

What to do if a fault occurs

The control unit has an advanced monitoring system that gives alarms if
anything unforeseen happens in the heat pump. Most alarms are rectifi ed
by you the user and there is never any risk that you can "damage" anything
in the heat pump when you reset an alarm once or twice. In the event of
recurring alarms, contact your dealership/service technician.
If a room sensor is installed the lamp on this will come on when the heat
pump gives an alarm.
Example of an alarm:
Info button:
When you press the Info button and turn the menu dial, information is
displayed as well as possible actions to rectify the alarm.
Ackn. button:
When you press the Ackn. button the alarm lamp on the control panel goes
out and the heat pump starts again within 15 minutes if there is a heating
requirement. If the fault has not been rectifi ed the lamp will remain lit.
Should several alarms have occurred on the heat pump, turn the menu dial
clockwise to fi nd out more information about each alarm.

Dimmed menu display

Possible cause 1: Blown fuse in the house's fuse box/distribution
box.
Action: 1. Check the fuses in the house's fuse box.
2. Replace the fuse if necessary. If miniature circuit-
breakers have tripped these are reset by pushing up
the toggle switch.
3. The heat pump automatically returns to its
operating mode 15 minutes after the fault has been
rectifi ed.
Possible cause 2: The heat pump's miniature circuit-breaker
has tripped.
Action: 1. Reset the heat pump's miniature circuit-breaker
by pushing up the centre toggle switch.
2. The heat pump automatically returns to its
operating mode 15 minutes after the fault has been
rectifi ed.
What to do if a fault occurs in the heatpump
Cause.
Date when the
alarm occurred.
Miniature circuit-
breaker for HT Plus C
Miniature circuit-
breaker for HT Plus E
For technical reasons the heat pump
does not restart until 15 minutes after
a stoppage.
31
Time when the alarm occurred.
ALARM
Power failure
080922 16:08:15
Info Ackn.
Info Acknowledge
Note