What does the Johnson Starley E31 fault code mean?

Your boiler has sensed that the air inside the system is getting dangerously hot and has shut down to protect itself.

How much does it cost to fix Johnson Starley error code E31?

Typical repair cost for the Johnson Starley E31 fault is £120-280 including labour.

Check all warm air vents (registers) throughout the house are open and not blocked by furniture.

Duct temperature too high (overheating)

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Each noise points to a different fault.

Sludge build-up — needs flushing, not bleeding.

7 signs repair isn't worth it anymore.