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Honeywell L4006A2114 Issue
I have a Crown MS40 I installed almost 3 years ago. Lately I noticed the water was hotter than in the past. I checked it and it reads 140° which I consider too high. So I backed the stat down 20° and read the stat again after two days, now it is at 135°. I am thinking the stat has gone bad and I need to replace it.
My question is 1) Should I use the same Honeywell L4006A2114? 2) Is there any other brand that is more reliable? 3) Is well grease required?