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Worcester Bosch Greenstar Comfort twin channel programmer 7733600003

Worcester Bosch

Worcester Bosch Greenstar Comfort twin channel programmer 7733600003

Worcester Bosch plug-in twin channel digital programmer for the Greenstar Comfort range, giving separate 7-day heating and hot water scheduling.

At a glance

  • Also known as WB7733600003
Manufacturer part no.
7733600003
Showing prices

£144.00

£120.00 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next working day
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 7733600003 is Worcester Bosch's Greenstar Comfort twin channel programmer, a digital control that plugs directly into a compatible Greenstar Comfort boiler fascia. It uses load compensation to read the boiler's output and temperature and adjusts flow temperature to match heating demand.

Signs this part needs replacing

  • Display blank, frozen or unresponsive to button presses
  • Programmed heating/hot water times not being followed
  • Buttons sticking or failing to register presses
  • Programmer not recognised or communicating with the boiler after plugging in

Before you order

  • Confirm your boiler model accepts the Greenstar Comfort twin channel programmer before ordering
  • No isolation of gas/water is needed to fit a plug-in programmer, but power down the boiler before removing the old unit
  • Reprogram heating and hot water schedules once the new unit is fitted

Not sure which part?

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