Potterton Flow Controller 16 Section 5141222

The Potterton 5141222 is a flow controller specified for the 16 section build of the Potterton Commercial NXR5i boiler range. It forms part of the boiler's flue-related flow control arrangement, regulating flow through the appliance so the combustion and heat transfer process stays within its designed operating window. The part is listed under gas boiler spares for Potterton Commercial appliances.

• Flow through the flue path is no longer held steady, with the boiler failing to reach or hold its set operating condition.
• The appliance locks out or shuts down repeatedly once it reaches temperature.
• Combustion readings drift outside the expected range for the appliance and cannot be corrected by normal servicing.
• The controller shows physical damage, distortion or debris build-up that prevents free movement.
• Audible noise or vibration from the flue flow control area during firing.

• Confirm the boiler model is a Potterton Commercial NXR5i and that it is built as a 16 section appliance.
• Check the section count of the installed boiler matches the 16 section specification of this controller before ordering, as the range covers other section counts.
• Verify the existing controller's part number is 5141222.
• Confirm the fault lies with the flow controller rather than with the flue, burner or controls, as these can produce similar symptoms.