E2
FAULT CODE
Biasi
Safety Thermostat Activated
High Severity
Engineer Required
The boiler has overheated and the safety thermostat has cut out to prevent damage.
Step-by-Step Fix Guide
-
Step 1
Allow the boiler to cool down
-
Step 2
Check system pressure and repressurise if low
-
Step 3 Engineer only
If pressure is fine, a Gas Safe engineer should check the pump and system for blockages
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.