3
FAULT CODE
Halstead
Fan / Air Pressure Switch Fault
High Severity
Engineer Required
The fan is not running correctly or the air pressure switch is not confirming airflow.
Step-by-Step Fix Guide
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Step 1
Check the external flue terminal for blockages
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Step 2
A Gas Safe engineer should check the fan, APS and silicon tubing
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Step 3 Engineer only
On Ace High models, the PCB is a common cause of phantom fan/APS faults
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.