START-UP ISSUES

[Gowerism]

Hello. We have a TSC ProPel 90. It goes through the start cycle and then shuts down on missed ignition but has a good fire. I’ve changed the combustion blower, the auger motor& the control board.
Another question I have is the vacuum switch. I can only find one with normally open contacts. Is this normal?
Any information would be so greatly appreciated! Thanks in advance!

 

[johneh]

The Exhaust prob is dirty or failed
Let's see if I have this right
start stove fire starts burns about 15/20
min then goes out correct
Most likely dirty exhaust prob
It tells the stove that a fire has been established.