Alarm: hot drop shaft

[funami]

hello everybody, i have one problem with Woody boiler. After one hour of operating it says Hot drop shaft.

In the manual is writed following:

Cinders/ash in the combustion head
Ash in the boiler, smoke pipe and chimney
Backflow valve instaled incorrectly in the boiler
No draught in chimney
Performance too high (KW) in proportion to boiler
Defecive senzor
Air flow wrong

I dont know what is backflow valve for example.

Can it also cause something else?

thank you

[Jannich]

hello everybody, i have one problem with Woody boiler. After one hour of operating it says Hot drop shaft.

In the manual is writed following:

Cinders/ash in the combustion head
Ash in the boiler, smoke pipe and chimney
Backflow valve instaled incorrectly in the boiler
No draught in chimney
Performance too high (KW) in proportion to boiler
Defecive senzor
Air flow wrong

I dont know what is backflow valve for example.

Can it also cause something else?
thank you

Hi
If the drop shaft getting warm after an hour,
then check the back of boiler for ash, ( air flow way in boiler blocked )
Check also fire grate , that it is properly fitted, and air hole not blocked.

regards Jannich