Joined in 2023 
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It has come to the end of it's life and now has to be reprogrammed after each power failure. To save expense (New programmer / rewire etc.), has anybody any information about the battery type or replaced one? We would rather not remove the programmer, have a look and then have to do it all again if possible. Sparky, that explanation is a great help for me thank you. Could I trouble you with a couple of follow on questions please? The thermostat is compatible with a wide range of heating systems, including gas, electric, and oil boilers. It offers basic functionalities such as temperature control, allowing users to set their desired room temperature and adjust it as needed.
ChannelPlus H37XL Series 2 - Secure Meters ChannelPlus H37XL Series 2 - Secure Meters
If you absolutely need hot water control with tado, we fully recommend you hire a heating electrician. This person should then "permanently bridge" both heating zones in the existing programmer. Jurian I have a similar issue with replacing a 3 channel programmer (Horstmann ChannelPlus H37XL Series 2). My elderly mother finds the H37 XL confusing to use, also the buttons are now badly worn & requires a new device, is anything similar & easier to use without rewiring. Am thinking a 2 channel possibly.I am concerned because I'm being told by Tado that it is not compatible. The only option they are offering is to keep my current programmer and use this in conjunction with their thermostats. If I do this I will not be able to control my hot water. As I said I currently use three channels and tado only supports two. I've a similar 2 CH zone+ HW system as you. I've installed 2 tado smart room thermostats in each of the zones. Final part is to replace the programmer with the extension kit to be able to control hot water. Tado have paused my online installation saying tado is incompatible with a 3 channel system. Like you I can see I should just wire both existingCH ON wires to the single CH ON terminal on the extension kit, and let the call for heat from the smart thermostats drive the zone valves and boiler. I've explained this to tado and asked for installation instructions based on an equivalent 2 channel system and wait for a response. Had a new boiler replaced so the electrician came to wire the boiler helped me to install the Tado system (He never did Tado before). So we read the instruction and wired.
PROGRAMMER (Cont.) - TLC Direct FITTING THE PROGRAMMER (Cont.) - TLC Direct
The thermostat is crafted using high-quality materials, ensuring its reliability and durability over time. It is designed to withstand everyday wear and tear, providing long-lasting performance. So I can wire the extension kit, but could you explain what other configuration steps you took please? Could I ask, are the Smart Thermostats in relay mode (wired) and not wireless? I'm guessing they are wired to a motorised valve which controls the heating zone.
Furthermore, the H21XL thermostat has a built-in frost protection function, which prevents pipes from freezing during cold weather. This feature is particularly useful for homeowners who often leave their houses unoccupied for extended periods. The H21XL thermostat features a clear display screen that shows the current temperature and settings, making it easy for users to monitor and make adjustments. It also offers programmable scheduling options, allowing users to set different temperature levels for different times of the day, ensuring optimal heating efficiency.
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