104
FAULT CODE
Ariston
Insufficient Circulation / Pump Fault
High Severity
Engineer Required
The pump is not providing adequate water circulation. The temperature rise is too fast, indicating restricted flow.
Step-by-Step Fix Guide
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Step 1
Check system pressure and repressurise if low
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Step 2
Bleed all radiators to remove trapped air
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Step 3 Engineer only
A Gas Safe engineer should check the pump is running and the system is free of 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.