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Honeywell Driver/Electronic W9335A1023B

Worcester Bosch

Honeywell Driver/Electronic W9335A1023B

Electronic driver module for Worcester Bosch Heatslave 9.24 MK 1 and MK 1.5 boilers.

At a glance

Manufacturer part no.
87161463250
GC number
397-930
Showing prices

£117.60

£98.00 ex. VAT · VAT at 20%

Out of stock — order for next delivery

Call 01302 279234 to check availability

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 Honeywell W9335A1023B is an electronic driver module used in Worcester Bosch Heatslave 9.24 MK 1 and MK 1.5 boilers. It forms part of the boiler's control electronics.

Signs this part needs replacing

  • The boiler fails to respond to demand for heat or hot water.
  • Frequent lockouts or ignition failures occur.
  • Intermittent or unexplained shutdowns.
  • Visible damage, burn marks, or corrosion on the module.

Before you order

  • Confirm the boiler model is Worcester Heatslave 9.24 MK 1 or MK 1.5 (BF, OF, or RSF).
  • Check the existing part number is W9335A1023B or Worcester Bosch 87161463250.
  • Inspect the module for any visible signs of damage before ordering.
  • Consult a qualified heating engineer if unsure about compatibility.

Not sure which part?

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