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hav it
hi i went to a call today at work, with a lock out fault on a 28 si. When i got there i reset it it ran for a few mins then locked it out agian. I opened the cover and could hear the air pressure switch clicking intermitantly, so possbly shorting out.
When i reset the boiler i have power to the air pressure switch. When i create a demand fan starts to run for a few seconds, then cuts out with no power going to fan, pump runs ok and still power to pressure switch. only way to get it to reset is to blow down pressues switch then power goes to fan and it runs for a few mins and cuts out. just thinking if anyone had any dealing with them as all signs say pressure switch.
When i reset the boiler i have power to the air pressure switch. When i create a demand fan starts to run for a few seconds, then cuts out with no power going to fan, pump runs ok and still power to pressure switch. only way to get it to reset is to blow down pressues switch then power goes to fan and it runs for a few mins and cuts out. just thinking if anyone had any dealing with them as all signs say pressure switch.