Ideal Water Pressure Switch 075176

The Ideal 075176 is a water pressure switch listed under the Ideal Spares range and also referenced as Sit-0340002. It monitors system activation and changes in flow, sending the signal that lets the appliance respond to demand and keep running as intended. It is used across a number of Ideal and Henrad models, including the Response and Systemiser families.

• The appliance fails to respond when there is a call for heat or hot water.
• Ignition is intermittent, with the boiler dropping out shortly after starting.
• The boiler locks out or shows a fault code linked to pressure or flow sensing.
• Operation becomes erratic, with the appliance cycling on and off without a clear demand pattern.
• The switch shows signs of water ingress, corrosion or a damaged diaphragm around the sensing point.

• Confirm your appliance model and serial number against the compatibility list before ordering.
• Check the part number on the existing switch and compare it with 075176 and the alternative numbers 1173939 and 0340002.
• Inspect the sealing washers and connections at the switch during removal, as these are often disturbed when the part is changed.
• Work on the appliance should be carried out by a competent person, with the gas and electrical supplies isolated before the switch is removed.