44
EN
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 (KTY) is
faulty, or the line to the temperature
sensor is interrupted.
=
short-circuit in the room sensor circuit
temperature sensor (KTY) is faulty,
or the line to the temperature sensor
has a short circuit.
=
interrupted limiter circuit
The temperature fuse (139°C)
has triggered or the line to the
temperature fuse is interrupted.
Display
Cause
Remedy
Arrange for a specialist to
check the lines and KTY.
KTY at 20°C approx. 1.9 k
W
replace if necessary.
Arrange for a specialist to
check the lines and KTY.
Arrange for a special-
ist to check the lines
and temperature fuse.
12:00
Thermal
fuse
12:00
Sensor -
break
12:00
Sensor short
-circuit
Error messages
