UK trade guideBoiler Spares 5 min readUpdated 10 July 2026

How to Replace a Ideal Logic C30 Fan (UK)

Fit a new fan on the Ideal Logic C30. UK part number, isolation and torque steps.

Ideal

Part number

The Ideal Logic C30 uses the fan 175586. Check the GC serial number sticker inside the case — Ideal revised the fan at least once during production.

Isolate

Turn off the gas at the isolation cock. Switch off 230 V at the fused spur. Drain to just below the fan: on the Ideal Logic C30, the drain-off is on the return pipe.

Fit

Unclip the fan. Transfer the O-rings if OEM includes new ones — always fit the new seals supplied. Torque any brass unions to 25 Nm. Refill to 1.2 bar, bleed and fire for a wet check.

Frequently asked questions

OEM or compatible?
For gas-carrying components on the Ideal Logic C30 always fit OEM. Non-gas parts (fans, PCBs, pumps) — OEM keeps the warranty valid.
Do I need to re-commission?
Yes — record combustion CO/CO₂ ratio after any gas-side work per BS 6798.
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