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Andrew Smith
Andrew Smith, Home Appliance Technician
Category: Appliance
Satisfied Customers: 3706
Experience:  Gas cooker specialist
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I have a Honeywell CM927 thermostat, where the display faded

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I have a Honeywell CM927 thermostat, where the display faded out completely. I replaced the two AA batteries, and it briefly came to life, though the display was fading in and out. It has now stopped working, and despite a further battery change is not responding. Can you help please? Am I looking at a replacement unit?
Is sounds like the display board is on its way out.
Best to swap it out now.
https://www.screwfix.com/p/honeywell-cmt921-wireless-room-thermostat/87377
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