Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Hanicks
Basket
Ravenheat Double Microswitch 5012027

Ravenheat

Ravenheat Double Microswitch 5012027

Double microswitch for the gas valve on Ravenheat RSF 820/20 series boilers, part number 5012027.

At a glance

  • Also known as 1840089
Manufacturer part no.
5012027
GC number
372-882
Showing prices

£27.50

£22.92 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 Ravenheat 5012027 is a double microswitch assembly for the gas valve. It is used on Ravenheat RSF 820/20 series boilers to provide switching signals from the gas valve to the boiler's control circuit. This part is listed under gas boiler spares in the switches category.

Signs this part needs replacing

  • Boiler fails to fire or ignite when there is a demand for heat or hot water.
  • Intermittent operation — boiler fires then cuts out shortly after.
  • No response from the gas valve when the boiler receives a demand signal.
  • Error code or lockout related to gas valve or flame detection.
  • Visible damage, burning, or loose connections on the microswitch.

Before you order

  • Confirm your boiler model is one of the Ravenheat RSF 820/20 variants listed above.
  • Check the GC number on your appliance data badge matches the relevant GC number.
  • Inspect the existing microswitch for physical damage or loose wiring before ordering.
  • Ensure the part number 5012027 matches the component you are replacing.

Not sure which part?

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