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Ideal Logic Heat fault L-5

Repeated lockout within time period

Gas boiler

What it means

Shown if the boiler reset occurs 5 times within 15 minutes, indicating a repeated lockout condition.

Likely causes

  1. Persistent ignition failure
  2. Recurring fault causing repeated lockouts

Where to start

  1. Investigate underlying cause of repeated L-2 lockouts
  2. Remove power to reset L-5 condition

The full answer, free

  • How to put it right, step by step
  • The manual page for this fault (page 36), right under the answer
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Safety: Isolate gas and power before you open the case. If you have been into the gas side, do a tightness test, and a combustion and flue check before you hand back. Gas Safe (UK) or RGI (Ireland) work only.

From the Ideal manual for the Logic Heat. Check the model on the data plate before you order parts.

Other Ideal Logic Heat fault codes