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Main Overheat Thermostat 5110870

Main

Main Overheat Thermostat 5110870

Overheat thermostat (part 5110870) for Main Multipoint BF and Multipoint BF ErP water heaters.

At a glance

  • Part type: overheat thermostat
  • Appliance family: Multipoint BF water heaters
  • Also known as 1160468
Manufacturer part no.
5110870
GC number
H18-281
Showing prices

£77.88

£64.90 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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 Main 5110870 is an overheat thermostat used on Main Multipoint BF water heaters. It monitors temperature at the appliance and interrupts the burner sequence if the unit overheats, acting as a safety cut-out. It is a serviceable spare for the Multipoint BF range.

Signs this part needs replacing

  • The appliance locks out or shuts down during or shortly after firing.
  • The overheat cut-out trips repeatedly and needs frequent manual resetting.
  • Hot water production stops even though the burner has been running normally.
  • The burner cuts out before the appliance reaches its normal operating temperature.

Before you order

  • Confirm the appliance model and GC number from the rating plate before ordering.
  • Check the existing thermostat's part number against 5110870.
  • Investigate the underlying cause of overheating, such as scale or restricted flueing, before fitting a replacement.
  • Refer to the manufacturer's parts list if your model is not listed above.

Not sure which part?

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