E03
FAULT CODE
Hamworthy
Overheat Protection
High Severity
Engineer Required
The safety temperature limiter has been activated.
Step-by-Step Fix Guide
-
Step 1
Allow the boiler to cool
-
Step 2
Check circulation and pressure
-
Step 3 Engineer only
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.