Glow worm boiler f4 fault

Glow worm boiler f4 fault

This error code indicates an ignition failure. Make sure that the condenser output pipe is not blocked, because it is a common cause of the error. In most boilers, the pipe is located at the bottom.

Also, this can be caused by an electrode failure and low gas pressure. It is better to trust a trained technician to troubleshoot the issue.