E84
FAULT CODE
Potterton
Room Controller Not Recognised
Medium Severity
Engineer Required
The room controller connected to the boiler is not being recognised by the PCB.
Step-by-Step Fix Guide
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Step 1
Check the controller is correctly wired
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Step 2
Try restarting the boiler
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Step 3 Engineer only
If fault persists, call a Gas Safe engineer — the controller or PCB may need replacing
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.