Ideal Flow Switch GT 11SE 175137

The Ideal 175137 is a flow switch used on Ideal Commercial appliances. It is listed by the supplier as F/SWITCH and carries the manufacturer reference 88024726. The switch senses water movement through the appliance and signals the control board that flow is present, allowing the boiler to fire and modulate when there is a demand.

• The appliance fails to fire on a heating or hot water demand even though the pump is running.
• Operation is intermittent, with repeated lockouts during demand.
• The control board reports a flow-related fault, or the appliance cycles on and off.
• Hot water temperature fluctuates, or the appliance drops out part way through a draw-off.
• No change in switch state when flow is present, confirmed by testing across the switch.

• Confirm the appliance model and, where shown, the GC number on the data badge before ordering.
• Check that the part number on the component being replaced matches 175137.
• The supplier lists manufacturer reference 88024726 against this item — quote it when cross-referencing an older parts list.
• Isolate the electrical supply and the water before removing the switch, and inspect any seals on refitting.