There is not a service kit available for the Ambirad AR unit, but you can use the following parts to complete the service for U Tube/ Linear & Herringbone heaters manufactured between 1986-2008: Probe assembly - 3175 Igniter cable/HT lead - 2243-1 Rectification/Flame sensor cable - 2243-2 Burner Gasket - 3190
Is there a service kit available for Ambirad AR unit?
General technical information about Reznor's products