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Ferroli Flue Sensor 39845080

Ferroli

Ferroli Flue Sensor 39845080

Ferroli flue temperature sensor, part number 39845080, for use in the listed Ferroli boiler models.

Manufacturer part no.
39845080
Showing prices

£30.29

£25.24 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 Ferroli 39845080 is a flue temperature sensor (thermistor) used on a range of Ferroli gas boilers. It monitors flue gas temperature and feeds that reading back to the boiler's control system. It is a serviceable spare part for the appliance families listed below.

Signs this part needs replacing

  • Boiler locks out or shuts down with a flue temperature related fault
  • Repeated overheat trips during or shortly after firing
  • Intermittent operation or nuisance lockouts that clear on reset
  • Flue temperature readings that are erratic, implausible or absent at the control
  • Boiler fails to complete its ignition sequence

Before you order

  • Confirm your appliance model and variant against the fit list above
  • Check the part number on the existing sensor against 39845080
  • Inspect the sensor lead and connector for damage before fitting
  • Verify the fault is sensor related rather than a flue or airflow problem

Not sure which part?

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