NGW 300 / LGW 300 / GBW 300
3 Description of function
303
3.4.7 Faults due to overheating /interruption of
the temperature limiter
If the heater overheats there is a fault lock-out by means
of the temperature limiter and the heater becomes locked
after the error after-run.
After the system has cooled down and the cause has
been eliminated and the heater has been examined for
possible damage, in particular to the cabling, the
temperature limiter and the regulating thermostat, the
head of the temperature limiter must be reset manually.
Only then can the lock be removed from the heater.
3.5
Removing the heater lock
The heater lock must be removed as follows:
•
By means of diagnosis: delete fault memory
or
•
Switch on the heater; in the error after-run, remove the
heater from the power supply for 5 seconds (pull the
fuse). Restore the power supply and start the heater
again.
