Help! Austroflamm is running strange again

[bke7]

The stove is running strange, the combustion fan seems to pulse continuously .
Last night extremely cold 6 degrees
After my post a few days ago, I jumped out the low limit switch and unplugged the unit for a few minutes. Austroflamm integra ii insert
It ran as it should , so I replaced the low limit switch.
Also if I do jump the low limit switch , how long is too long to run like this?
I must be out of town for a day and a half
Are all these switches so cheaply made? It appeared to not be very high quality. Bought it from a local stove shop who said they are all the same. It appears that it is the same switch used in many appliances.
Any suggestions are appreciated
Stove is clean, air sensor clean, exhaust and flue clean.

 

[Flammam]

So you jumped the new switch and its working properly? Usually when I get surging it means I either have a gasket leak at the door or the Air sensor needs cleaning.

 

[bke7]

Air sensor is clean , gasket appears in great shape but will check it.
The odd part is that it runs fine with the low limit jumped
After I installed the new one it ran great for a few days then started surging again