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Johnson & Starley Electronics Module ET005

Johnson & Starley

Johnson & Starley Electronics Module ET005

Electronics module for Johnson & Starley Hispec J25SC and J25SCA warm air units, handling control sequencing and monitoring.

At a glance

  • Appliance family: Hispec J25SC and J25SCA
  • Also known as 1691515
Manufacturer part no.
ET005
Showing prices

£399.71

£333.09 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 ET005 is an electronics module manufactured by Johnson & Starley for use in its Hispec warm air unit range. It forms part of the appliance's control electronics, handling the sequencing and monitoring functions that the boiler relies on to run. It is supplied as a control component within the Gas Boiler Spares category.

Signs this part needs replacing

  • The appliance fails to start or sequence through its normal operating cycle.
  • The fan or burner does not respond when there is a call for heat.
  • Repeated lockouts or shutdowns that clear only after a power cycle.
  • No response to the room thermostat or programmer.
  • Erratic or absent control behaviour that cannot be traced to another component.

Before you order

  • Check the appliance rating plate to confirm the model is a Hispec J25SC or J25SCA.
  • Confirm the existing module is marked ET005 before ordering.
  • Verify the fault lies with the electronics module and not with the thermostat, sensor or wiring.
  • Isolate the electrical supply to the appliance before any inspection or replacement work.

Not sure which part?

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