32
warmhaus.com
Error
Code
Description of the Error
Malfunction
Probable Cause
Solution(s)
E 15
Fan failure (feedback/
supply)
Boiler does not work,
E15 error code flashing
on the screen
> Fan harness
1-) Call for authorised service at first
2-) Check intermittent contacts or open contacts on harness carefully
on fan main supply, if main supply not connected then fan will not
operate and boiler will not ignite
3-) Check intermittent contacts or open contacts on harness carefully
on fan PWM connection, if PWM connection not connected then fan will
work at %100 capacity
4-) Reset & Restart boiler
E 16
Central heating
temperature RETURN
sensor faulty
Boiler does not work,
E10 error code flashing
on the screen
> Central heating RETURN
temperature sensor faulty
1-) Call for authorised service at first
2-) Check intermittent contacts or open contacts on harness carefully
3-) Check RETURN Central heating temperature sensor ressistance
according to page 93 at section 4.28 if its out of tolerance replace NTC
4-) Check cabeling and connectors between RETURN NTC and board
5-) Reset & Restart boiler
E 17
Temperature difference
between FLOW and LIMIT
NTC (Double Heating
Probe) faulty
FLOW and LIMIT sensor
(DOUBLE NTC)
malfunction
> FLOW and LIMIT Sensor
( double NTC ) faulty
1-) Reset & Restart boiler
2-) Call for authorised service at first
E 19
Water flow selection with
water flow meter input
reading
Lack of domestic heating
water on request
Wrong parameters settled on TsP
menu
1-) Call for authorised service at first
2-) Only authorised service must adjust TsP Parameter P01=0 with
defalut value
E 20
CH Overtemperature,
Temperature Central
Heating > TSP 81 value °C
Boiler does not work,
E81 error code flashing
on the screen
> Lack of water on the system
> Pump blockage
> Pump failiure
> Pump harness
> Installation blockage
1-) RESET boiler at first check if problem removed
2-) Check boiler central heating valves are open if they are closed open
of all
3-) Check all radiator valves are open if they are closed open of all
minimum 3 meters of radiator must be open
4-) RESET boiler and check if problem removed
5-) Call for authorised service at first
E 21
Delta Temperature
Central Heating flow
and Return > TSP 82
value °C
Boiler does not work,
E21 error code flashing
on the screen
> Lack of water on the system
> Pump blockage
> Pump failiure
> Pump harness
> Installation blockage
1-) RESET boiler at first check if problem removed
2-) Check boiler central heating valves are open if they are closed open
of all
3-) Check all radiator valves are open if they are closed open of all
minimum 3 meters of radiator must be open
4-) RESET boiler and check if problem removed
5-) Call for authorised service at first
E 28
Maximum allowed
consecutive lock-out reset
reached
Usable RESET number
reached.
Too many consecutive lock-out
failures (followed by reset) due to
other possible causes
1-) Removing power supply reset will be allowed
2-) Check the root cause of Error code to solve
3-) If fault still persists call for authorised service
E 37
Low voltage anomaly
Boiler does not work,
E37 error code flashing
on the screen
Low voltage < 165 VAC +/- 5%
on the supply network operatio
mode OR During Au-TO calibration
mode < 182 VAC +/- 5%
1-) Call for Electrical supply network provider
2-) Error will remove if supply voltage > 170 VAC +/- 5%
3-) If you seen seen this E37 during calibration calibration can not be
complete unless supply voltage > 188 VAC +/- 5%
E 40
Wrong network frequency
survey
Boiler does not work,
E40 error code flashing
on the screen
Wrong frequency survey out of
tolererance 50 Hz +/- 5% on the
supply net work
1-) Call for Electrical supply network provider
2-) Error will remove if supply frquency 50 Hz +/- 5%
E 41
Loose of flame more than
6 successive times
Boiler does not work,
E41 error code flashing
on the screen
> Too many domestic heat water
request in short period ( 1 min )
> Low gas pressure
1-) Call for authorised service at first
E 42
Buttons anomaly
Boiler does not work,
E42 error code flashing
on the screen
Wrong parameters settled on
TsP menu
1-) Call For service
E 43
Opentherm ommunication
error
Boiler does not work,
E43 error code flashing
on the screen after 1
minute of communucation
error
Opentherm line disconnected
1-) Remove energy from boiler and re energised E43 will be removed
and boiler & buttons will get back to funcitional
2-) Replace the room unit batteries with the fresh ones and reset from
room unit
3-) Check cabeling between boiler and room unit and re connect if any
disconnection, if connection set up succesfully then connection symbol
page 37 symbol 19 will be activated on the screen
4-) Call for authorised service to re connect openterm connection
rE 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 request from in shotr
time from out side room units or
thermosad bridge etc.
1-) Reset & Restart boiler
2-) Call for authorised service at first
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 board dismantled
> Service key damaged or
disconnected
> Updating Software (probable)
1-) Call For 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 on
position
1-) Call for authorised service at first
2-) Check RETURN and FLOW sensor on position.
