7
4 209 973 / 00 Fault Indicator Type WP-VT (2141)
Alarm Display ashing Meaning Effect/action
1 2
• No 1 red red Temperature sensor in Heat pump and additional
the upper tank - heating is shut down.
• No 2 red red faulty or defective Inform service.
• No 3 red - Temperature sensor in Compressor not running.
evaporator
Inform service.
• No 4 red - Faulty or defective Replace defective sensor.
• No 5 red - 1. Pressure switch alarm compressor shuts down and
(High-pressure fault) restarts automatically. Eliminate
fault / inform service. maybe
Acknowledge (see page 5)
• No 6 red - 2. Pressure switch alarm and acknowledge in user menu
(high-pressure fault) It is essential to inform service
• No 7 red - For information: not relevant
(inactive)
• No 8 red - Temperature sensor Information:
„Temp 1“ Inform service. Replace
faulty or defective defective sensor.
(Service-Program)
• No 9 red - Protective magnesium Information:
anode exhausted Install new protective anode.
Inform service.
• No 10 red - Legionella temperature Information :
not reached Check settings.
Inform service.
Alarm overview / fault overview
Alarm/fault overview WP-VT
Alarms and faults can be seen in the user level (alarm mode) and acknowledged.
If the error is not eliminated, then, even if acknowledged, the alarm display remains. If several alarms/faults arise,
they are placed in sequence and shown as a priority list. The alarms/faults are divided into 3 groups (alarm levels).
Alarm group Alarm-No Status/Effect Remarks/Action
1 General equipment alarm 1 and 2 Equipment is turned off/ No hot water/ see table
no operation possible below
2 Working uid circulation 3, 4, 5 Heat pump is shut down/ Hot water with additional heating,
Alarm (heat pump) and 6 operation only possible switch on additional heating/ see
with additional heating. table below
3 Information 6, 7, 8 Operation remains irregularities in operation/
9 and 10 possible/ the displayed see table below
alarms must be
eliminated soon
1 Heat pump operation and fault
display. Flashing red = fault in
alarm group 2 or 3
2. Additional heating operation and
fault display (boiler or immersion
heater)
If both displays (1+2) are flashing
red = fault in alarm group 1
3 Display
Alarm
9 0 0
Acknowledge =
press knob
Control Panel
1 2 3
Fault Indicator
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