57
ID
Class
Designation
(Possible) cause/effect
Rectification/action
Quit
101
0
Error
Limit switch high
pressure
The high-pressure switch threshold has been
exceeded.
The heat pump is not ready for operation and
will be turned off.
The heat pump can only
be reactivated when the
pressure falls below the
parameterized value.
No
101
1
Error
Limit switch low
pressure
Threshold vacuum switch undercut
The heat pump is not ready for operation and
will be turned off.
The heat pump can only
be reactivated when the
pressure rises above the
parameterized value.
No
101
2
Error
Sensor high pressure
The pressure sensor is defective. The heat
pump is not ready for operation and will be
turned off.
The pressure sensor or its
wiring must be checked.
No
101
3
Error
High pressure
Maximum pressure limit exceeded
The heat pump is not ready for operation and
will be turned off.
The heat pump can only
be reactivated when the
pressure falls above the
parameterized value.
No
101
4
Error
Sensor low pressure
The pressure sensor is defective. The heat
pump is not ready for operation and will be
turned off.
The pressure sensor or its
wiring must be checked.
No
101
5
Error
Low pressure
Minimum pressure limit undercut
The heat pump is not ready for operation and
will be turned off.
The heat pump can only
be reactivated when the
pressure rises above the
parameterized value.
No
101
6
Error
Max. flow temperature Maximum inflow temperature inflow
exceeded
The heat pump is not ready for operation and
will be turned off.
The heat pump can only
be reactivated when the
inflow temperature falls
below the parameterized
value.
No
101
7
Error
Sensor supervision
Multiple occurrences of sensor errors within
the monitoring period.
The heat pump is not active until the error
will be confirmed.
The message must be
confirmed. The sensors or
their cabling must be
checked.
Yes
101
8
Error
Source side supervision Multiple occurrences of errors on the source
side within the monitoring period.
The heat pump is not active until the error
The message must be
confirmed. The sensors
and actuators or their
Yes