Truma FrostControl Operating Instructions

11
Trouble-shooting list
Fault Cause Rectification
The drain valve (FrostControl)
opens.
Temperature at drain valve less
than approx. 3 °C. (If the tem-
perature is below approximately
3 °C, the drain valve will open
automatically!)
– If necessary, switch on the vehicle heating unit.
It can be closed again at temperatures above
approx. 7 °C on the drain valve!
–
The drain valve (FrostControl)
can no longer be closed.
Temperature at drain valve is below
approximately 7 °C.
Rotary switch is not at “Operation”.
–
–
If necessary, switch on the vehicle heating unit.
It can be closed again at temperatures above
approx. 7 °C on the drain valve!
Turn the drain valve’s rotary switch to “Operation”,
then press the push button until it engages.
–
–
Water flows intermittently from
the FrostControl drain muff.
Water pressure too high.– Check pump pressure (max. 2.8 bar). If con-
nected 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 remove the failure, please contact the Truma Service Centre.

Truma FrostControl Specifications

General

Material	Plastic
Protection class	IP 44
Type	FrostControl
Activation	Automatic opening at low temperatures
Operating voltage	12 V
Weight	Approx. 110 g