Water Supply - Truma Combi 4 E Instrucciones De Uso

Trouble-shooting list
Fault

Water supply

After the heater is switched
off, the drain valve opens
(FrostControl).
The drain valve (FrostControl)
can no longer be closed.
Water flows intermittently from
the FrostControl drain muff.
If this does not solve the problem, please contact the Truma Service.
20
Cause
– Temperature at drain valve
less than approx. 3 °C.
– Temperature at drain valve
is below approximately
7 °C.
– Rotary switch is not at
"Operation".
– Water pressure too high.
Rectification
– Switch the heater on. If the temperature is below ap-
proximately 3 °C, the drain valve will open automati-
cally! If the heater is not in operation, the drain valve
can be reclosed only when the temperature is approxi-
mately 7 °C or higher!
– Use heating element for FrostControl.
– Switch the heater on. If the heater is not in operation,
the drain valve can be reclosed only when the tem-
perature is approximately 7 °C or higher!
– Turn the drain valve's rotary switch to "Operation",
then press the push button until it engages.
– 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.