Built-in memory holds the user program indefinitely so that it is never lost – even if you remove the batteries

Honeywell Programmable Room Thermostat 24 hour CM921

Can be installed standalone* or part of an existing heating system*, including conventional and combi boilers, as well as new heating systems. Wireless connection to the boiler allows you to mount the Chronotherm in your room without disruption Looking at replacing my CM921 and maybe even the receiver, it’s 10 years old and even with new batteries in the CM921 it seems to be temperamental to touch, in screen sometimes goes blank.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.

CM900 Wireless Installation Guide - Plumbworld

The ‘Pro Series’ is made in the UK by Resideo (who were formally part of Honeywell International Inc.) and distributed to independent merchants via a national merchant wholesaler. Resideo (Honeywell Home) is the same manufacturer who made the CM700 & CM900 Series 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

Honeywell CM921 user manual (English - 18 pages)

The Honeywell CM921 Wireless 24Hr Programmable Room Thermostat can be used to control the heating circuit in a Sundial S or Y Plan and is particularly well suited to control combination boiler installations or additional zones in a S Plan Plus system. The Honeywell CM921 Wireless 24Hr Programmable Room Thermostat is for use where heating needs are the same from day to day. The CM927 can provide a different heating programme for each day of the week to maximise energy efficiency. Two wire, volt free connections are ideal for use with combination boilers. Honeywell CM921 Wireless 24Hr Programmable Room Thermostat Product Features: Year Warranty is available when fitted with an Intergas System Filter and both items are warranty registered with Intergas Heating at the same time. Reliable RF communication utilising 868 MHz band with 1 percent duty cycle limit to minimise communication disturbance Hello, my Honeywell CM921 Thermostat does not display properly, I can hardly see anything on the LCD screen.

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. Optimum Start & Stop saves energy and money by getting to the correct temperature at the correct time and turning off the heating early if the room temperature is correct.

CM921 - User Guide - Plumb Arena CM921 - User Guide - Plumb Arena

Pro Series Wireless Programmable Thermostat | Direct Replacement for Honeywell CM927/CMS927/CMS927B1049 Wireless Programmable Room Thermostat 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. PF Community Forums General Off-Topic Chat For Sale & Wanted Make a suggestion about the forum in general This is a Pro Series Wireless Programmable Thermostat ONLY and does not include a Wireless Relay Box!Can I buy another same thermostat and bind it with my current receiver, or do I have to change both of them? Seen these have smart features app controlled , geo fencing and the like and can add individual radiator control later.