Intergas NTC Heat Exchanger Sensor 230034

This is the Intergas NTC heat exchanger sensor, supplied under part number 230034. It is a temperature sensing component fitted to the heat exchanger on Intergas Xclusive and Xtreme condensing boilers, where it provides the boiler control with a resistance signal proportional to temperature. The control uses that signal to regulate firing and to monitor the heat exchanger for overheat and dry-fire conditions.

• Boiler locks out or shows a heat exchanger temperature related fault code that will not clear on reset
• Erratic or implausible flow and return temperature readings on the boiler display
• Boiler short cycling, with firing cutting in and out more frequently than normal
• Overheat lockout during domestic hot water or heating demand
• Resistance reading at the sensor that falls outside the expected NTC curve for the ambient temperature

• Confirm the boiler model and GC number against the fitment list above before ordering
• Check the existing sensor plug and wiring for damage, as a poor connection can mimic sensor failure
• Verify the fault with a resistance check across the sensor at a known temperature before replacing
• Isolate the appliance and depressurise as required before removing the sensor from the heat exchanger