Tyler26
New Member
I have had a Navien tankless hot water tank for a couple years now. It was installed by my home builder. For the first year it worked great but over the last year I have issues with the outlet going to the furnace. It will heat up to its temperature on the thermostat but the water doesn't seem to make it past the circulating pump and into the furnace coils to heat the house . I have had the circulating pump changed already since the tech said they fail sometimes . It worked for a few days then did the same thing again. The only way I've been able to get it to work is by turning the furnace off turning my tap on to get the temperature down, then let it sit. Also it doesn't send out an error code either.