Hi All,
After a few weeks of going through the forums and trying the cheaper and easier solutions I’m now at a loss. moved into a new home with this tankless system and a dedicated recirc line. with the heater in external recirc (or internal for that matter) the burner will not activate to keep the recirculating water hot. I’ve replaced the flow sensor and the check valve As well as flushed the system extensively. the check valve was clearly faulty as the water now stays warmer, but not hot. As soon as a tap opens, burner activates and hot water is made. The pump is circulating as I can eventually feel warm water come through the return line, but not sure if it’s recirculating enough Since the burner won’t turn on. i did take the pump apart and the impeller seems to be in good shape. It does make some noise though, almost like a clicking. the unit will throw the 038E code on startup after being drained out but a quick pull of the relief valve solves that and it never returns, not sure if that is related.
not sure where to go from here, any help is appreciated!
After a few weeks of going through the forums and trying the cheaper and easier solutions I’m now at a loss. moved into a new home with this tankless system and a dedicated recirc line. with the heater in external recirc (or internal for that matter) the burner will not activate to keep the recirculating water hot. I’ve replaced the flow sensor and the check valve As well as flushed the system extensively. the check valve was clearly faulty as the water now stays warmer, but not hot. As soon as a tap opens, burner activates and hot water is made. The pump is circulating as I can eventually feel warm water come through the return line, but not sure if it’s recirculating enough Since the burner won’t turn on. i did take the pump apart and the impeller seems to be in good shape. It does make some noise though, almost like a clicking. the unit will throw the 038E code on startup after being drained out but a quick pull of the relief valve solves that and it never returns, not sure if that is related.
not sure where to go from here, any help is appreciated!