42
warmhaus.com
Error
Code
Description of the
Error
Malfunction
Probable Cause
Solution(s)
E 88
Fault of electronic
gas valve managing
circuit
Boiler does not
work, E88 error
code flashing on the
screen
> Cabling
disconnections
> Gas valve failiure
1-) Call for authorised service at first
E 89
Problem on
combustion
feedback signal
Boiler does not
work, E89 error
code flashing on the
screen
> Aging or rust on
the electrode
> Recirculation on
fluegas path
> Blokage on flue or
wrong flue
> Electrode position
> Cabling
disconnections
> Combustion
calibration
> Electronic board
> Gas valve failure
1-) Call for authorised service at first
E 90
Unable to regulate
combustion
Boiler does not
work, E90 error
code flashing on the
screen
> Aging or rust on
the electrode
> Recirculation on
fluegas path
> Blokage on flue or
wrong flue
> Electrode position
> Cabling
disconnections
> Combustion
calibration
> Electronic board
> Gas valve failure
1-) Call for authorised service at first
E 92
Air compensation
active
Boiler does not
work, E92 error
code flashing on
the screen
> Possible wind
precence
> Aging or rust on
the electrode
> Recirculation on
fluegas path
> Blokage on flue or
wrong flue
> Electrode position
> Combustion
calibration
> Min power
adjustment
1-) Call for authorised service at first
E 93
Unable to regulate
combustion
(temporarily)
Boiler does not
work, E93 error
code flashing on the
screen
> Aging or rust on
the electrode
> Recirculation on
fluegas path
> Blokage on flue or
wrong flue
> Electrode position
> Combustion
calibration
> Gas valve failure
> Electronic board
1-) Call for authorised service at first
