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Horstmann (Secure) C1727 Smart Programmer with 2 Channel Receiver and Thermostat

Horstmann Controls

Horstmann (Secure) C1727 Smart Programmer with 2 Channel Receiver and Thermostat

At a glance

  • Also known as 4210051
Manufacturer part no.
C1727
Showing prices

£114.24

£95.20 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next working day
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Horstmann (Secure) C1727 is a smart, wireless 2-channel heating programmer with an integrated receiver and programmable thermostat display. It controls heating (and stored hot water, where fitted) on combi, system or heat pump boilers, and is app-enabled via Bluetooth with an optional plug-in Wi-Fi adapter for full smart control.

Signs this part needs replacing

  • Wireless display loses connection with the receiver or fails to update
  • Heating or hot water no longer follows the programmed schedule
  • Display is unresponsive or blank even with fresh batteries
  • App or Bluetooth pairing repeatedly fails

Before you order

  • Confirm the existing backplate is the standard 6-pin type used by CentaurPlus/ServicePlus programmers
  • Check whether a Wi-Fi adapter is needed separately for remote app control

Not sure which part?

Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.