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Johnson & Starley Clock 24 Hr CL3S

Johnson & Starley

Johnson & Starley Clock 24 Hr CL3S

24 hour clock, part CL3S, for Johnson & Starley Hispec and warm air units.

At a glance

  • Also known as 1691344
Manufacturer part no.
CL3S
GC number
244-985
Showing prices

£218.28

£181.90 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 CL3S is a 24 hour clock supplied by Johnson & Starley for use in its warm air units and air heaters. It provides the time control function within the appliance, switching the unit on and off according to the set daily schedule. It is listed under clocks, timers and programmers for gas boiler spares.

Signs this part needs replacing

  • The clock loses time or stops running altogether.
  • The appliance no longer switches on or off at the set times.
  • The dial or setting mechanism is stiff, damaged or will not turn.
  • Heating runs continuously or not at all, regardless of the timer setting.
  • The time control has no effect on appliance operation.

Before you order

  • Check the appliance rating plate to confirm the model and GC number.
  • Confirm the existing clock is a 24 hour type and matches part CL3S.
  • Check the clock connections and wiring before condemning the unit, as faults elsewhere can mimic a failed clock.

Not sure which part?

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