52
WARNING
Acid detergents should be used carefully, instructions of the manufacturer and
environmental regulations must be followed. The cleaning can only be performed by a
qualified person.
If any doubts about using the detergents arise, consult with the manufacturer of the detergent.
6.4
Disturbances in the operation
In case of a malfunction during the operation of the device the display of the internal unit
TERMOTRONIC displays
“Caution, malfunction”.
Find the malfunction in the manual. For error correction, call the installer who performed the installation
of the device.
6.4.1 Reset of the thermal protection of the electrical heater
The thermal protection of the electrical heater is an additional safeguard protecting the device in the
following cases:
The electrical contactor which turns on the electrical flow heater can be permanently short-
circuited.
At commission, air is in the system; this causes heating without heat extraction.
The easiest way to determine whether the thermal protection of the electrical heater is turned off is to
turn on the operation of the auxiliary source on the TERMOTRONIC control unit. Determine if you can
feel by hand the difference between the supply line and the return line. The electrical heater works if
the supply line is warmer. How to activate the auxiliary source is explained in the manual.
In case the electrical heater does not work because of one of the aforementioned reasons, the safety
has to be reset after the problem is resolved. You do this by pressing the
RESET
button shown on the
scheme.
In the case of WSL141
Содержание WSL141
Страница 15: ...15 WSL142 Clearances ...
Страница 22: ...22 1 Torque key 2 Counter key 1 Torque key 2 Counter key 1 2 1 2 ...
Страница 26: ...26 Drain valve ...