Fiat X2-50 Cab, Owner'S Manual

Page: 63 / 124

Equipment Details
72
FAULT CAUSE RECTIFICATION
TROUBLE-SHOOTING
Water supply
When the heating system is switched off,
the electrical safety/drain valve opens.
- The valve remains open even after the
heating has been switched on.
The electrical safety/drain valve will no
longer close.
- The valve remains open even after the
heating has been switched on.
Water dripping from the electrical
safety/drain valve.
- Outside temperature below 4°C.
- No 12 V power supply at the drain valve.
- Outside temperature below 8°C.
- No 12 V power supply at the drain valve.
- Water pressure too high.
- Switch the heating on (at temperatures of
about 4°C and below the drain valve will
open automatically).
- Check 12 V supply voltage and fuses.
- Switch the heating on (without heating
operation, the drain valve will not close
again until temperatures above 8°C have
been reached).
- Check 12 V supply voltage and fuses.
- Check pump pressure (max. 2.8 bar).
If connected to a central water supply
(rural or urban connection), a pressure
reducer must be used, which will prevent
pressures higher than 2.8 bar entering the
boiler.
If these measures do not lead to the
rectification of the fault, in principal we
would ask you to contact Truma After
Sales Service.