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Ideal Printed Circuit Board Kit Logic Code Combi ES33 177321

Ideal

Ideal Printed Circuit Board Kit Logic Code Combi ES33 177321

Ideal printed circuit board kit for Logic Code Combi boilers, part number 177321, alternative 1776277.

At a glance

  • Part type: Printed circuit board kit
  • Also known as 1776277
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
177321
Showing prices

£34.54

£28.78 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 Ideal 177321 is a printed circuit board kit manufactured by Ideal for the Logic Code Combi range of gas boilers. It serves as a replacement control board, managing the boiler's electronic functions such as ignition, heating, and hot water production. This kit is suitable for the Logic Code Combi ES26, ES33, and 33 models, as well as Ideal Commercial Parts. The kit is designed to replace a faulty printed circuit board in these appliances, restoring correct operation.

Signs this part needs replacing

  • Boiler fails to ignite or fire, often accompanied by a lockout condition that requires a manual reset.
  • Error codes or fault messages appear on the display, indicating a control board fault or communication error.
  • Intermittent lockouts or unexpected shutdowns during operation, sometimes with no obvious pattern.
  • No power or unresponsive control panel, with the boiler not responding to demand from the thermostat or programmer.
  • Erratic boiler behaviour that does not match thermostat settings, such as fluctuating temperatures or inconsistent hot water.

Before you order

  • Check your appliance model and GC number against the compatibility list to ensure the correct part.
  • Confirm the part number 177321 and alternative number 1776277 before ordering.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

Not sure which part?

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