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New install buderus with Hydrostat 3250 control

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bink
bink Member Posts: 97
in THE MAIN WALL
what could cause intermittent attempts to start. We hear the boiler try to start up but shutdown before even getting the boiler to fire. This in between normal runs that are run by the zones. Works normal then. There is a sound for few seconds upto 15 sec. It Does this repeatly at approx. 10 minutes intervals after a normal boiler run. My wife calls it phantom runs. It does not show zones calling heat on the Argo panel when this happens the zone led's on the side do not light up.
Any ideas , contractor is coming tomorrow but was hoping to get some independent ideas. Figure this could be tricky to find.
Thanks for your help.

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