Ideal WLX RS50 / RS60 Fault codes & diagnostics

1 fault code with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.

Regular Natural Gas 14.6-17.6 kW 1983-1994 Discontinued

Replaced by: Classic NF

Download the Ideal WLX RS50 / RS60 manual The official installation & service manual (PDF) — the exact document these fault codes were verified against. PDF

The fault code is already on your display

Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Fault codes

All 1 documented codes

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1. PILOT WILL NOT LIGHT

Your boiler is unable to start its small internal flame, meaning the main heating system cannot turn on.

High Engineer only £90-180

Parts commonly replaced

  • Pilot Injector
  • HT Lead
  • Ignition Electrode
  • Piezo Igniter Unit
Full explanation for 1. PILOT WILL NOT LIGHT
Status & diagnostic codes

1 operating states & engineer diagnostics

Not faults — these are normal operating states. Tap to expand.

3. PILOT LIT, BUT NO MAINS GAS Status Your boiler's small pilot light is on, but the main burner is failing to ignite to provide heating or hot water.