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B&Q£160.00Visit shop B&Q - Honeywel T4R Wireless 7 Day Programmable Thermostat Y4H910Rf4003 Replaces
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The Honeywell T4R is an ideal solution for homeowners looking to upgrade from older CM-series thermostats to a more flexible, wireless heating control system. It offers precise comfort management through 7-day or 5/2/1-day scheduling and advanced features like TPI control and optimum start, making it perfect for energy-conscious users; however, prospective buyers should note that while it is highly versatile, it requires physical access for manual temperature adjustments as it lacks integrated Wi-Fi or smartphone app support.
| Colour | White |
|---|---|
| Model Part Number | Y4H910RF4003 |
| Brand | Hanicks |
No, the T4R is a dedicated wireless programmable thermostat and does not support Wi-Fi or app-based control.
Yes, the T4R is designed to be a functional replacement for the Honeywell CM series, including the CM927.
Battery life typically lasts approximately 2 years under normal usage conditions.
Yes, the T4R supports OpenTherm communication for advanced modulation with compatible boiler systems.
The pre-paired receiver has a reliable operating range of up to 30 meters in a typical residential setting.
Yes, it includes a built-in frost protection feature to prevent pipes from freezing in very cold conditions.
Check if the batteries are inserted correctly or if they have reached the end of their service life and require replacement.
Verify the wireless link between the thermostat and the receiver. If the signal is lost, perform a re-binding process according to the manual.
Ensure the thermostat is not located near a heat source such as a radiator or in direct sunlight, which may interfere with temperature sensing.
Installation of the T4R is straightforward, especially if replacing a legacy Honeywell CM-series unit like the CM727 or CM927. The receiver unit comes pre-paired with the thermostat, minimizing setup time.
