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F.87 FAULT CODE
Glow-worm

Electrode Fault (Energy Range)

Medium Severity Engineer Required

On Glow-worm Energy boilers, F.87 indicates an ignition or sensing electrode fault.

Step-by-Step Fix Guide

  1. Step 1 Engineer only

    Call a Gas Safe engineer to test and clean or replace the electrode

Gas Safe Reminder

Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.

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