Alarm 05 – Safety thermostat! Boiler overheating!
The system will be switched off.
When an operating temperature of up to 95 °C is reached, the safety thermostat (more precise-
ly: safety temperature limiter "STL") is triggered.
4
Perform a visual inspection of the system
4
Allow the boiler to cool down
4
Reset thermostat: Screw off the black cap on the switch bracket on the front and press the
head below it with a pin until you hear a clicking sound.
4
Observe the boiler for a longer period of time!
Power failure, power cut-off
4
Observe the boiler for a longer period of time!
The boiler is running under full load at high setpoint temperatures and the heat
dissipation suddenly stops.
4
Notify customer service.
Pressure drop in the heating system
4
Notify your system integrator/installer/SHK.
The boiler circuit pump is defective and cannot dissipate the heat.
4
Notify your system integrator/installer/SHK.
Alarm 06 – Main drive motor is overheated!
The system will be switched off.
Thermal motor protection has tripped
4
After some time, the drive motor cools down and the system can be put back into opera-
tion by turning the main switch off and then on again.
4
If the fault occurs regularly, please notify customer service.
Foreign objects in the stoker trough
4
Notify customer service.
Alarm 07 – The ignition does not function!
The system was not able to ignite the fuel on the burner plate despite several attempts.
Ignition set incorrectly or defective
4
Notify customer service.
Fuel missing or of poor quality
4
Is the burner plate filled?
4
Check the fuel supply.
Too much ash in the combustion chamber
Causes
8.2.6
Reaction to
Alarm 05
8.2.7
8.2.8
Troubleshooting
8
The alarm list
B KWB Easyfire EN, 05.2011
53
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