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Riello Control Box RMO 503SE Z3001150

Riello

Riello Control Box RMO 503SE Z3001150

Riello RMO 503SE burner control box, part number 3001150, replacing the earlier 502SE unit.

At a glance

  • Also known as 3200366
  • Have a Gas Safe or OFTEC registered engineer carry out the replacement
Manufacturer part no.
Z3001150
Showing prices

£386.74

£322.28 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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

Riello control box RMO 503SE, part number 3001150, is the burner control unit that sequences ignition and monitors flame on the manufacturer's oil burner range. It replaces the earlier Riello 502SE unit.

Signs this part needs replacing

  • Burner locks out repeatedly with no diagnostic fault shown
  • Control box fails to power up or hold the ignition sequence
  • Burner will not start despite good power supply and fuel

Before you order

  • Match the part number 3001150 printed on your existing control box before ordering
  • Note that replacing a 502SE with this 503SE unit requires rewiring
  • Isolate electrical power before removing the control box
  • Have a Gas Safe or OFTEC registered engineer carry out the replacement

Not sure which part?

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