My aquastat is set at 180 and the boiler will not reach that temperature so it keeps running. I just had it serviced. Any ideas? thanks
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since it was just serviced
give them a call.
Pretty reasonable to assume the service had something to do with the problem.
Otherwise, cut the power to the boiler and pumps-this might reset the system if there's a controller problem.
After a couple minutes, power it up again.
Make sure there's water in it.