If you hear the transformer clicking but see no spark at the burner

ensuring consistent compressor and fan motor activation

By using the Honeywell Home cover plate

and various legacy CG and GV models

Lochinvar & A.O. Smith 100163263 Tubing Kit Els PW 17895 If you hear the transformerThe Lochinvar & A. O. Smith 100163263 Tubing Kit is a critical field service assembly engineered for high efficiency commercial water heaters and hydronic boilers. This OEM replacement part, which is the direct functional equivalent of the MSC3702 tubing kit, provides the necessary conduits for maintaining precise fluid circulation and pressure regulation within the combustion or heat exchange circuit. Constructed from high grade, durable materials,