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Honeywell CM907 blank LCD screen - changed batteries correctly and still blank - still works the boiler as when put to manual and increase temperature button the heating is on - do I need to somehow reboot the screen - or is this the screen of death?

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  • Read more: How to Troubleshoot Honeywell Thermostats ' eHow.com http://www.ehow.com/how_6596826_troubleshoot-honeywell-thermostats.html#ixzz17aWIl2Xt

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