BoilerFaultCodesPotterton E161 Fault Code
The Potterton E161 fault code means: your boiler has stopped working because the fan used to clear out waste gases is not spinning at the correct speed or has failed to start.. It appears on 1 Potterton model in our database.
Technical description: Fan fault
What causes the Potterton E161 fault?
This fault occurs when the boiler's control system detects that the fan is not spinning fast enough to safely clear waste gases from the flue. The most common reasons are a buildup of dirt on the fan blades, moisture causing the motor to seize, or a communication failure between the fan and the main circuit board.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Potterton models that show the E161 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton E161 fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026