28
GB
Error messages
The control unit continuously monitors the sensor for short circuits and interruptions.
The error messages appear as follows:
=
interrupted room sensor circuit
The temperature sensor (PTC) is faul-
ty, or the line to the temperature
sensor is interrupted.
=
short-circuit in the room sensor circuit
temperature sensor (PTC) is faulty, or
the line to the temperature sensor
has a short circuit.
=
interrupted limiter circuit
The temperature fuse (142°C)
has triggered or the line to the
temperature fuse is interrupted.
Display
Cause
Remedy
Arrange for a specialist to
check the lines and PTC.
PTC at 20°C approx. 1.9 k
Ω
replace if necessary.
Arrange for a specialist to
check the lines and PTC.
Arrange for a specia-
list to check the lines
and
temperature
fuse.
12:00
Sensor -
break
12:00
Sensor short
-circuit
12:00
Thermal
fuse
