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Worcester Bosch Air Flow Sensor 87161411900

Worcester Bosch

Worcester Bosch Air Flow Sensor 87161411900

Worcester Bosch 87161411900 air flow sensor for CBI and SBI appliances, monitoring air movement through the combustion circuit to prove fan operation.

At a glance

  • Part type: Air flow sensor
  • Also known as 1017807
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161411900
GC number
299-363
Showing prices

£9.49

£7.91 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 Worcester Bosch 87161411900 is an air flow sensor used on Worcester Bosch CBI and SBI appliances. It sits in the combustion air circuit and reports air movement back to the appliance control board, which uses that signal to confirm the fan is running and the flue path is clear before allowing the burner to light. When the sensor stops reporting correctly, the board will not permit ignition and the appliance either fails to fire or drops into lockout.

The sensor is a serviceable component within the air proving circuit, so it is a common first check when a fan-related fault appears on these models.

Signs this part needs replacing

  • The appliance fails to fire, or fires briefly and then shuts down
  • Repeated ignition lockout with the fan audibly running
  • Intermittent fault codes relating to fan or air flow proving
  • The fan runs normally but the control board does not register air movement
  • Lockouts that clear on reset and return after a short run cycle

Before you order

  • Check the GC number and the appliance data plate to confirm the sensor matches your model.
  • The alternative number 1017807 identifies the same sensor where it appears on older documentation.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

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

Worcester Bosch 87161411900 Air Flow Sensor