Honeywell Programmable Room Thermostat 24 hour CM921

Product Information

If you take a good look at the Pro Series Wireless Programmable Thermostat, you will see it is nearly identical to Honeywell Home’s T3 Series Thermostat (the user display menu is identical). However, the big difference is that the Pro Series Wireless Programmable Thermostat will bind directly to any existing Honeywell Wireless Relay Boxes, where the T3 Series won’t, so you don’t have the hassle of having to get an installer out to fit this.

Honeywell Programmable Room Thermostat 24 hour CM921

Direct replacement for a Honeywell CM927/CMS927/CM727/CM921, if you are unsure about compatibility please call us on 01302 279234.Can be installed standalone* or part of an existing heating system*, including conventional and combi boilers, as well as new heating systems. Honeywell CM921 Wireless 24Hr Programmable Room Thermostat is p art of the Honeywell Controls Range from Plumbarena. Honeywell are one of the market leaders in heating control technology, providing quality products for domestic comfort.

Honeywell CM921 Wireless Thermostat Problems - PlumbersForums.net Honeywell CM921 Wireless Thermostat Problems - PlumbersForums.net

Would consider smart radiator Control, but can see that isn’t cheap and not sure how good it actually is. The Intergas Combi Compact ECO RF 30 features a built-in RF module (some Honeywell RF thermostats can communicate with the boiler directly) and OpenTherm technology as standard. If I set the wireless unit to 18 degrees and the room temp is 21 degrees then surely the heating should stay off when it's in manual mode? PF Community Forums General Off-Topic Chat For Sale & Wanted Make a suggestion about the forum in generalMore Add Plumbing Business Post / Search Plumbing Jobs Add Plumbing Video Advertise on PlumbersForums.net Hello, my Honeywell CM921 Thermostat does not display properly, I can hardly see anything on the LCD screen. Wireless connection to the boiler allows you to mount the Chronotherm in your room without disruption