26
40.020.933 - rev. 04 - 2011
AT 300 series
English
/i
Fault
Cause
Solution
Action
The flame goes out
directly after ignition.
1
The heater has no volt-
age.
Check the electric connec-
tion.
User
2
There is water or sedi-
ment in the fuel tank.
Clean the tank and the fuel
filter, see fig. 3 (F).
User
3
The fuel pump is not
switched on.
Position the switch to "1", see
fig. 5 (A).
User
4
The waste oil is too vis-
cous or too cold.
Dilute the waste oil with die-
sel oil.
User
Check the pump thermostat
and replace if necessary.
Dealer
Check the pump motor.
Dealer
Check the fuel pump for dirt. Dealer
5
The fuel supply pipe is
blocked: The fuel flows
back into the fuel tank
through the return pipe.
Clean the fuel supply pipe,
see fig. 3 (O).
User
6
The pump thermostat
has not reached the
right temperature yet.
Let the heater cool down.
Restart the heater.
User
Let the heater burn longer
with the switch on "1", see
fig. 5 (A).
User