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EPH Controls CP4V2 OpenTherm Programmable Wireless RF Room Thermostat

EPH Controls

EPH Controls CP4V2 OpenTherm Programmable Wireless RF Room Thermostat

Wireless RF programmable room thermostat from EPH Controls with OpenTherm communication and a boost function.

Manufacturer part no.
CP4V2
Showing prices

£77.76

£64.80 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The EPH Controls CP4V2 is a programmable room thermostat that communicates with the boiler over OpenTherm and links to its receiver wirelessly via RF. It controls heating demand according to a programmed schedule and includes a boost function for temporary overrides. It is intended for use on compatible OpenTherm boiler systems.

Signs this part needs replacing

  • The thermostat no longer responds to changes in room temperature
  • The display is blank, flickering or showing fault codes
  • The RF link to the receiver drops out or fails to pair
  • The boost function no longer triggers heating
  • The boiler does not fire when the thermostat calls for heat

Before you order

  • Confirm the boiler is OpenTherm compatible
  • Check the existing thermostat and receiver setup matches this configuration
  • Verify the model number CP4V2 against the manufacturer's parts list for your system

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.