Baxi Float Switch Assembly 720126201

The Baxi 720126201 is a float switch assembly kit used on Baxi Bermuda BBU 15 HE back boiler units. The float switch monitors water level within the appliance and signals the control circuit when the level falls outside normal operating conditions. It is supplied as an assembly kit for service and repair work.

• The boiler fails to fire or repeatedly locks out with a water level related fault.
• Intermittent operation that clears and returns without any other fault being found.
• The float no longer moves freely, or the switch does not change state when the float is operated.
• Visible damage, contamination or stiffness in the float and switch linkage.
• Fault codes or symptoms pointing to the level sensing circuit rather than the burner or gas train.

• Confirm the appliance model and GC number against the manufacturer's parts list.
• Check the existing float switch assembly and its part number before removing it.
• Isolate the electrical supply and the water supply to the appliance before starting work.
• Verify that the fault lies with the float switch and not with the wiring or control board.