Water heater doesn't work on peak setting Welcome › Forums › Residents Forum › Water heater doesn't work on peak setting This topic contains 0 replies, has 1 voice, and was last updated by rich833 1 year, 11 months ago. Viewing 1 post (of 1 total) Author Posts March 18, 2018 at 11:50 am #214 rich833Keymaster I have one of the water heaters which has a switch for peak and off peak heating. The water heats fine during off peak but not at all during peak. I guess something is broken. Has anyone else experienced this? Who did they use to fix it? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.