I know this has been answered before but I can't find post. I've had no hot water all weekend and am looking for someone to fix it :) Furnace runs but water isn't heating up
Looking for fast, responsible and reasonable - recommendations?
Carol G. replied:
Amtrol has some good troubleshooting videos on their website. About halfway down is a video clip describing the Er3 code. They call it "slow recovery", which means the water isn't heating right. Based on what you're describing of the problem, I think Er3 is just confirming the symptoms you are experiencing rather than telling you something new. Hope you get it fixed soon! http://www.amtrol.com/troubleshooting.htm