Honeywell Programmable Room Thermostat 24 hour CM921

Product Information

Not sure what you mean to be honest. The boiler is fixed, the thermostat is wireless and fires the relay to start stop the boiler when thermostat at temperature. That thermostat allows a several time periods throughout the day. I have a Ferolli boiler not even 2 years old with the Honeywell wireless thermostat control unit built on to the thermostat circuit, The window sensor, isn’t a window sensor as such it’s looking at temperatures changing rapidly due to drafts and the video says it’s hit and miss on open windows so probably wouldn’t use that feature as such. PF Community Forums General Off-Topic Chat For Sale & Wanted Make a suggestion about the forum in general

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Also this has gone on for months and months I have given up with my landlord and as I am buying the house anyway I 'd rather spare myself the hassle of speaking with him. The Pro Series Wireless Programmable Thermostat is a BRAND NEW 2021 launched, 7 day programmable room thermostat designed to replace all existing Honeywell CM Series Wireless Thermostats. Find a Plumber Plumbers Looking for Work - Post Here Looking for a Plumber? Post Jobs Here Looking for a Heating Engineer? Post Jobs Here Find a Renewable Energy Specialist Plumbers Directory Listings The control unit/timer that is built into the boiler has been disabled so there is no chance that the boilers built in controller is conflicting with the honeywell wireless units.The Honeywell CM921 is a programmable thermostat designed for use in homes and small businesses in the United Kingdom. It features a clear digital display and simple controls, making it easy to set schedules for heating and cooling systems. The device is compatible with a wide range of boilers, making it versatile and suitable for different types of heating systems. Pro Series Wireless Programmable Thermostat – Replaces Honeywell CMS927 & CMS921 Wireless Programmable Room Thermostats The Honeywell CM921 is wireless and can be controlled remotely using the Honeywell Total Connect Comfort app, available for iOS and Android devices. This allows users to adjust their heating schedules and monitor their heating systems from anywhere, at any time. The device also features a frost protection mode that helps to prevent pipes from freezing during cold weather.

Honeywell CM900 Wireless Installation Guide - Honeywell

If you leave it below 1.5m above floor level it may be reading the wrong temperature and causing the boiler to fire up. eg: on a coffee table. The Honeywell CM921 can be programmed for up to six different time periods per day, allowing users to tailor their heating schedules to their individual needs and preferences. The device also features a holiday mode that allows users to set a lower temperature when they are away from home for an extended period of time, helping to save energy and reduce costs.More Add Plumbing Business Post / Search Plumbing Jobs Add Plumbing Video Advertise on PlumbersForums.net The Pro Series Wireless Programmable Thermostat will replace the following Honeywell CM Series products: Pro Series Wireless Programmable Thermostat | Direct Replacement for Honeywell CM927/CMS927/CMS927B1049 Wireless Programmable Room Thermostat Pro Series Programmable Wireless Thermostat Box contains: