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Satronic Photocell MZ770S 50003

Satronic

Satronic Photocell MZ770S 50003

Satronic photocell MZ770S 50003 for flame detection on oil-fired burners and appliances.

At a glance

  • Also known as 3062556
Manufacturer part no.
GS471021037
Showing prices

£50.40

£42.00 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 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 Satronic MZ770S 50003 is a photocell (light-sensitive flame detector) manufactured by Honeywell Satronic. It is fitted to oil-fired burner and boiler assemblies, where it monitors the flame and signals the burner control box to prove combustion. If the photocell does not register a flame, the control box will lock out the burner.

Signs this part needs replacing

  • Burner fires then locks out after the safety time, with no flame signal registered
  • Repeated or intermittent lockouts despite a visible, stable flame
  • Burner runs but the control box does not hold the flame-proving sequence
  • Photocell window is sooted, clouded or discoloured and cleaning does not restore reliable operation
  • Erratic flame signal causing nuisance shutdowns during normal running

Before you order

  • Confirm the existing photocell part number matches MZ770S 50003
  • Check the burner or appliance model against the manufacturer's parts list
  • Inspect the photocell holder and lead for damage before fitting a replacement
  • Check the control box is compatible with the photocell type fitted

Not sure which part?

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