17
warmhaus.com
Error
Code
Description of the
Error
Malfunction
Probable Cause
Solution(s)
E 44
Cumulated
intermittent
ignition without
reaching
burner ignition.
Boiler does not
work, E44 error
code flashing on
the screen
> Intermittent
contacts on harness
> Hammer effect on
water net
> Too many
requests in short
time
1) Reset & Restart boiler
2) Call for authorised service
E 62
Calibration request
Boiler does not
work, E62 error
code flashing on
the screen
> Calibration not
done
> Replacing board
but not service
key from the old
board (PCB)
> Service key
damaged or
disconnected
> Updating
Software
1) Call For authorised service
E 72
Delta T heating
at ignition not
occurred
Boiler does not
work, E72 error
code flashing on
the screen
> FLOW OR
RETURN Sensor
not in
position
1) Call for authorised service at first
2) Check RETURN and FLOW sensor on
position.
E 74
Second CH
temperature Probe
faulty
Boiler does not
work, E74 error
code flashing on
the screen
> FLOW and LIMIT
Sensor (double NTC
) faulty
1) Reset & Restart boiler
2) Call for authorised service.
E 77
Absolute current
values reached
Boiler does not
work, E77 error
code flashing on
the screen
> Gas inlet pressure
> Aging or rust on
the electrode
> Recirculation of
exhaust gas into
fresh air
> Blockage in flue
or wrong flue
> Electrode position
> Cabling
disconnections
> Combustion
calibration
> Electronic board
> Gas valve failure
1) Call for authorised service
E 78
Max regulation
current value
reached
Boiler does not
work, E78 error
code flashing on
the screen
> Gas inlet pressure
> Aging or rust on
the electrode
> Recirculation of
exhaust gas into
fresh air
> Blockage in flue
or wrong flue
> Electrode position
> Cabling
disconnections
> Combustion
calibration
> Electronic board
> Gas valve failure
1) Call for authorised service
