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Yes
Disconnect the power
from the ComfoAir.
Replace the fan.
(See the maintenance
chapter of the fans)
by removing the protection
Yes
Activate the self-test
(P76 on 1)
Is a
control signal
(1,5 - 10 VDC)
present on
the fan?
E1 /
E2
Supply fan / Exhaust
fan not rotating
Release the front panel
caps and unscrewing
the screws.
Remove the cover of
the electronic box by
pressing in the 2 click
connectors.
Is
there 230 VAC
power present
on the fan ?
No
Disconnect the
power from
the ComfoAir.
Replace the
control circuit
board
Riesgo de electrocución.
No
Disconnect the power
from the ComfoAir.
Replace the control
circuit board.
21 - ES
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