Discuss Central heating problem. in the Central Heating Systems area at ElectriciansForums.net
And so would be looking at a EMC problem, i.e. some thing else in the home producing a strong signal which is upsetting the programmer, as a radio ham this is a common problem, with car alarms, and security lights going off when they shouldn't.I have replaced the programmer but no joy
hi DaveIs the programmer making proper electrical contact with the backplate? Was the backplate replaced at the same time as the programmer?
hi Dave
1. Yes to contact, and yes to replacement of back plate, as much as one can tell as fastened with both securing screws at bottom of programmer
Thanks Dave, you are right. Bad contacts could be the problem. Redone wiring Centre with that in mind.If the backplate is flat and firmly fixed then with the securing screws done up the programmer will be making good contact.
It was just a thought as I've seen odd behaviour like this from poor contact causing momentary power loss to programmers.
Have you contacted honeywell technical support to see if they can shed any light on this odd behaviour?
Thanks Dave, you are right. Bad contacts could be the problem. Redone wiring Centre with that in mind.
Honeywell said they've experienced this problem and the insertion of a capacitor would normally help in suppressing or absorbing the over voltage. To be honest I think it made it worse. I removed it and the problem is less frequent now! Go figure
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