We are having problems with an A.O. Smith 75 gal Commercial 120K BTU water heater. It has Flue control, that leads to a transformer, which leads to a Johnson Controls G77 control box.
After three years of use, we are experiencing continuing shut downs, lockouts, whenever we put it under heavy load. (92 gph)
We've had two factory authorized repairmen visit, but they don't seem to understand the complete system. We may be stuck with having to buy a new system.
Question: are we better off buying a common Kenmore or equivalent without all the "doodads" and a 6 to 12 yr. warranty. The temperature we require is 140F. Our booster brings the rinse cycle to 185-190F.
After three years of use, we are experiencing continuing shut downs, lockouts, whenever we put it under heavy load. (92 gph)
We've had two factory authorized repairmen visit, but they don't seem to understand the complete system. We may be stuck with having to buy a new system.
Question: are we better off buying a common Kenmore or equivalent without all the "doodads" and a 6 to 12 yr. warranty. The temperature we require is 140F. Our booster brings the rinse cycle to 185-190F.