In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Munchkin 199 Circulation problem
Hello wall, I have a Munchkin 199 about 6 years old. It seems to be running fine, display shows 135 to 145 temp, hot water is fine which is a zone off the boiler, house has 5 zones, water seems to be going out hot ok, but doesn't seem to be coming back warm from some of the zones, bedrooms of course, one zone, the garage, seems to come back pretty warm. I did have an f09 and or f11 code over the past couple weeks, any help is appreciated greatly, thanks!