Discuss If I replace CM927 will it work with the existing Relay box? in the Plumbing Forum | Plumbing Advice area at PlumbersForums.net
Before buying a replacement... Have you reset the pairing ('binding') of the existing devices and installed new good quality batteries in the CM927? (By 'good quality' I don't mean some fake you got cheap from eBay but branded, e.g. Duracell, and bought from an authorised stockist with a big turnover, such as a supermarket.)If I buy a replacement CM927 will it work with the existing Relay box?
Before buying a replacement... Have you reset the pairing ('binding') of the existing devices and installed new good quality batteries in the CM927? (By 'good quality' I don't mean some fake you got cheap from eBay but branded, e.g. Duracell, and bought from an authorised stockist with a big turnover, such as a supermarket.)
I would expect the new device to bind to the existing receiver without any trouble but personally I'd buy the pair because the cost won't be much more if you hunt around a bit and it won't hurt to have a spare 'in stock' if it's not needed.
What happened 3 days ago, in AUTO (always used auto) it failed to heat (cold rads), & now every time we have to give it a nudge by increasing the demand Temp 1-2 degrees from 29 (Ambien room Temp 19 dc) & it starts heating again, & also 3 midnights ago it came ON on its own when its programmed to go off at 10:00.
Okay, I'd say those are the symptoms of a CM927 problem not a communication ('pairing') problem.
You could try performing a 'factory reset':
and reprogramming your cm927 but the chances of it fixing the problem are slim to zero.
In your position I'd just order a replacement. The only way to be sure with these problems is to test by substitution.
Interesting, the up button on our CM927 unit (the remote wifi bit) has become less and less responsive and now I can only turn the temperature down which is good for reducing gas bill but I'd prefer for the unit to work as intended. There are also some issues with the screen flickering but doesnt seem to be battery related but having read thread above I might get some new ones as a douible check. The other issue I'm having is that with hot water not coming on when the room thermostat thinks the boiler should be off so i'm having to disable the central heating in order to haver the hot water coming on. Very odd.Hi just wondering what the outcome on this was? I too have a Honeywell CM927 and the screen is not displaying the numbers correctly anymore and difficult to read what the display is actually showing.
Can I buy a compatible unit that would work with the existing receiver or do I need to buy a combo (unit + receiver)?
Appreciate any feedback on this
This symptom usually means that the zone valve that feeds the hot water cylinder coil is either not opening fully or its microswitch has failed.The other issue I'm having is that with hot water not coming on when the room thermostat thinks the boiler should be off ...
Reply to If I replace CM927 will it work with the existing Relay box? in the Plumbing Forum | Plumbing Advice area at PlumbersForums.net
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