Ideal 175594 Thermistor - No Flow

The Ideal 175594 is a no-flow thermistor supplied by Ideal for use in its heating appliances. A thermistor of this type senses temperature change at the point where water flow is monitored, allowing the appliance to register that water is moving through the relevant circuit. It sits within the group of thermostats, thermistors and sensors used across Ideal's spares range.

• The appliance fails to register a water flow condition when a hot water or heating demand is made.
• Fault codes relating to flow, temperature sensing or dry firing appear on the appliance display.
• Hot water delivery becomes intermittent, or the appliance fires and then cuts out shortly after starting.
• The appliance locks out repeatedly during demand periods without an obvious external cause.
• Resistance readings taken across the thermistor fall outside the values expected for the sensed temperature.

• Confirm the part number on the existing component or in the appliance's service documentation matches IDEAL175594.
• Check the appliance GC number and serial plate against the compatibility list, as no models are currently recorded against this part number.
• Inspect any seal, O-ring or retaining clip at the sensor location and replace it if it shows signs of hardening or damage.