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New boiler, rollout switch keeps breaking
I have a new boiler Dunkirk DLX100 installed by Sears.
Problem is that rollout switch keeps breaking and stopping the heating. Normally it takes about 30 minutes for this to happen. As soon as I reset the switch, it works for another 30 minutes.
I installed liner in the chimney but it did not help.
People from Sears are clueless.
I tried running boiler with nearby window open but it did not help either.
What is causing this? I suspect it is the switch itself - if it was really flames heating it, I think it would not run for another 30 minutes as soon as I reset it. Any thought on how I can troubleshoot this?