6.3 Troubleshooting table
Display text
Possible cause
F1
Drip tray is full.
Drip tray full
Boiler is warming up or has
reached the min. boiler
temperature.
F2 Heating
Boiler is not heating up.
Temperature safety feature is
switched off.
During start-up – boiler is empty
F3 Filling
and being filled.
During use - boiler is filling too
slowly. After approximately 3
minutes F3 changes to E3.
Engineer
Minimum electrode does not detect
water.
Display Error
Possible cause
Temperature sensor problem in the
B0
hot water system.
Engineer
Temperature error – NTC sensor
detects a temperature lower than
0°C.
Temperature sensor problem in the
B1
hot water system.
Engineer
Temperature error – NTC sensor
detects a temperature higher than
108°C.
Problem with temperature
E0
regulation in the hot water system.
Engineer
No NTC sensor is detected.
Problem with temperature
E1
regulation in the hot water system.
Engineer
NTC sensor has short-circuited.
E3
Hot water system fills too slowly.
The inlet valve is closed for safety.
Engineer
Filling time error. Max. electrode is
not reached within approximately 3
minutes. Inlet valve of the hot
water system closes.
01/2007 (rev. 6) V2.0
Action
Empty the drip tray, message disappears.
The message disappears when the boiler
has reached the set temperature.
Reset the temperature safety feature on the
back. Check whether the boiler must be de-
scaled, de-scale if necessary.
No action required. When the boiler has
reached the correct level this is followed by
F2 Heating.
No action required. When the boiler has
reached the correct level this is followed by
F2 Warm up.
See error E3.
Action
Call the dealer or service engineer.
Check the NTC sensor. Tip: check the
function of the NTC sensor with service
menu 2.9.0.
Call the dealer or service engineer
Check the NTC sensor. Tip: check the
function of the NTC sensor with service
menu 2.9.0.
Call the dealer or service engineer.
Check the NTC sensor. Tip: check the
function of the NTC sensor with service
menu 2.9.0.
Call the dealer or service engineer.
Check the NTC sensor. Tip: check the
function of the NTC sensor with service
menu 2.9.0.
Check the water pressure. Open the water
supply valve completely and check the
connection hose for kinks. Switch the
machine off and then on again.
Check the water circuit of the inlet valve to
the reservoir for blockages. Check the inlet
valve. Replace if necessary.
39
service enclosure
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