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Baxi Electronic Controller PCB Promax 5106791

Baxi

Baxi Electronic Controller PCB Promax 5106791

Baxi electronic controller printed circuit board (5106791) for Baxi and Potterton Promax 15HE boilers, monitoring boiler processes and safety cut-outs.

At a glance

  • Part type: Electronic controller printed circuit board (PCB)
  • Also known as 1117534
Manufacturer part no.
5106791
Showing prices

£380.66

£317.22 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 Baxi electronic controller printed circuit board, part 5106791, is the control centre of the boiler. It monitors and controls every process occurring throughout the system through switches, thermostats and sensors. It also enforces safety precautions, turning off boiler operations when internal readings point to a fault such as excessive pressure or a low water level.

Signs this part needs replacing

  • The boiler fails to fire or does not respond to a call for heat
  • Repeated lockouts or fault codes shown on the boiler display
  • Thermostat, programmer or switch inputs are ignored
  • The boiler shuts down unexpectedly on a pressure or water level reading
  • Intermittent running that clears briefly after a power cycle

Before you order

  • Confirm the GC number 41-590-58 and the exact appliance model before ordering.
  • Cross-check the alternative part number 1117534 against the board being removed.

Not sure which part?

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