Honeywell
Honeywell Programmable Thermostat T3 Wired Wall Mounted T3H110A0066
Honeywell Home T3 wired programmable wall-mounted thermostat in white, part T3H110A0066, for Honeywell residential heating controls.
At a glance
- Part type: Programmable thermostat
- Also known as 4201220
£110.94
£92.45 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Honeywell Home T3 is a wired programmable thermostat designed for wall mounting, giving timed control of heating in a domestic system. It replaces the existing room thermostat on the same wiring and provides scheduled temperature control rather than a simple on/off setting. This unit is supplied under part number T3H110A0066 and carries the alternative reference 4201220.
Signs this part needs replacing
- The display is blank or fails to illuminate when the heating system is powered.
- Buttons do not respond, or the set temperature cannot be changed.
- The thermostat no longer switches the boiler on when the room is below the set point.
- The displayed room temperature drifts noticeably from the actual room temperature.
- Time and schedule settings are lost repeatedly, or the unit resets after a power interruption.
Before you order
- Check the part number on the existing thermostat or its packaging against T3H110A0066.
- Older labels may show the alternative reference 4201220 for the same unit.
- Confirm your appliance model against the compatibility list before ordering.
Mechanical
| Part type | Programmable thermostat |
|---|---|
| Colour | White |
Compliance
| Manufacturer part number (MPN) | T3H110A0066 |
|---|---|
| GPC classification | Thermostats |
| Alternative numbers | 4201220 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| HONEYWELL RESIDENTIAL PRODUCTS | — | — | — |
Documents & drawings
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