17
warmhaus.com
Error
Code
Description of the Error
Malfunction
Probable Cause
Solution(s)
E 80
Problem on electronic gas
valve driver
Boiler does not work,
E80 error code flashing on
the screen
> Electronic board
> Gas valve failure
1-) Reset & Restart boiler
2-) Call for authorised service.
E 81
Lock-out for combustion
problem at starting (1)
Boiler does not work,
E81 error code flashing on
the screen
> Strong flue blokage
> Combustion problem
> Wrong flue
> Gas inlet pressure
> Aging or rust on the electrode
> Recirculation on fluegas path
> Electrode position
> Combustion calibration
1-) Reset & Restart boiler
2-) Call for authorised service.
E 84
Capacity reduction for
detected (supposed) low
gas inlet pressure
Boiler operates at limited
capacity, E84 error code
flashing on the screen
> Gas inlet pressure
> Combustion problem
1-) If there is strong wind (ie.wind storm) wait until the wind storm
stop then RESET the boiler
2-) IF problem persist Call for authorised service
Attention: Only authorised service must perform Au-To calibration
E 87
Problem on electronic gas
valve circuit
Boiler does not work,
E87 error code flashing on
the screen
> Cabling disconnections
> Gas valve failure
1-) If there is strong wind (ie.wind storm) wait until the wind storm
stop
then RESET the boiler
2-) IF problem persist Call for authorised service
Attention: Only authorised service must perform Au-To calibration
E 88
Fault of electronic gas
valve managing circuit
Boiler does not work,
E88 error code flashing on
the screen
> Cabling disconnections
> Gas valve failure
1-) Reset & Restart boiler
2-) Call for authorised service.
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-) Reset & Restart boiler
2-) Call for authorised service.
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-) Reset & Restart boiler
2-) Call for authorised service.
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-) Reset & Restart boiler
2-) Call for authorised service.
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-) Reset & Restart boiler
2-) Call for authorised service.
E 94
Possible low gas pressure
or exhaust recirculation
Boiler does not work,
E94 error code flashing
on the screen
> Gas inlet pressure LOW
> Recirculation on fluegas path
> Blokage on flue or wrong flue
> Aging or rust on the electrode
> Electrode position
> Combustion calibration
> Gas valve failure
> Electronic board
1-) Reset & Restart boiler
2-) Call for authorised service.
Attention:
Only authorised service must perform Au-To calibration
E 95
Intermittent combustion
value
Boiler does not work,
E95 error code flashing
on the screen
> Harness on electrode and earth
> Aging or rust on the electrode
> Electrode position
> Combustion calibration
1-) Reset & Restart boiler
2-) Call for authorised service.
E 96
Flue or air suction way
blockage
Boiler does not work,
E96 error code flashing
on the screen
> Blokage on flue
> Blokage on air suction path
1-) Reset & Restart boiler
2-) Call for authorised service.
E 98
SW error, board start-up
error fault
Boiler does not work,
E98 error code flashing
on the screen
> Boiler software problem
1-) Reset & Restart boiler
2-) Call for authorised service.
E 99
Generic fault
Boiler does not work,
E99 error code flashing
on the screen
> Boiler electronic hardware
problem
1-) Reset & Restart boiler
2-) Call for authorised service.
(1) Call the Authorized Service if failure continues.
(2) 81 numbered failure corresponds any blocking in the exhaust gas pipe. In such case, you should consult the authorized service technician before re-starting the combi boiler.
