E317
FAULT CODE
Potterton
Wrong Power Supply Frequency
Medium Severity
Engineer Required
The boiler is detecting an incorrect mains power frequency (should be 50Hz in the UK). This may indicate a power supply issue.
Step-by-Step Fix Guide
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Step 1
Check with an electrician that the mains power supply to the boiler is correct (230V, 50Hz)
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Step 2 Engineer only
If power supply is correct, call a Gas Safe engineer as the PCB may be faulty
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.