EN - 22
A8
pre heater
becomes too hot.
(T1 > 40
º
C)
Release the front panel
by unscrewing the screws.
Remove the plastic panel
in front of the control
circuit board
Lift the front panel
from its hinges.
Activate the self-test
(P76 on 1)
Check the following:
- Fan settings
(to low?)
- Supply valve's
(to far closed?)
- Supply air ducts
(blockages?)
- Version settings
(P57 correct value?)
No
Yes
Did
the pre heater
valve open
and close?
Refit the (cog of
the) pre heater
motor.
Disconnect the
power from the
ComfoAir.
Install all parts in
reverse order.
Reconnect the
power to the
ComfoAir.
Risk of electrocution.
Replace cog if it is
worn-out.
