Hi guys. I have a weil mclain wm97+ 155 boiler for my house. It is running crazy these days. It fires up for may be 10 seconds then gas stopped, and the fan keeps running for another 10 seconds then the fan stops. Right after that the system starts again and repeat everything just happend. I checked close with the temp reading on the display, the supply temp never reaches the target temp, so I don't think that is because the boiler is lack of water flow and the system shut off when it hit the target temp for supply. Thus it is not the circulation pump. What goes wrong here? Any thoughts? Thanks in advance!
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