E385
FAULT CODE
Potterton
Low Voltage — Under 195V
Medium Severity
Engineer Required
The mains voltage supply to the boiler has dropped below 195V — below the minimum operating voltage.
Step-by-Step Fix Guide
-
Step 1
Check with an electrician that the mains supply voltage is correct
-
Step 2 Engineer only
If voltage is correct, the boiler's power supply circuitry may be faulty — call a Gas Safe engineer
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.