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These one size fits all controllers often do not actually fit all the systems they say.
These have dip switch settings and 6 or 8 wiring options included to help aleviate the problem.. My advice, purchase an OEM replacement for the water heater from Rheem, and sell the new unit you purchased to a customer when the need arizes.
or...... look for some dip switch, jumper, or wiring diagram issue you might have missed when installing the new controller.
Let me know what you think, we can go from there if necessary, otherwise please click the big green accept button. thats how I get paid from your deposit.
From what I can tell this is the replacement honeywell offers for the S8600M. They made so many different controls which were very similar that they needed to consolidate with a universial for replacements.
Hello again, I see this in the commercial building controls also, broadly ... the latest and greatest wiz bang system (that no long has all the bugs and built in disaster of the previous one sold last year)....... is sold into the market....
then in two or three years, or less, sometimes just 6 months... a replacement system is developed that fixes those bugs.
and frailties natural to all most cheap bits of electronics
These are made in china for less than $10 in many if not most cases.. then wholesale here for $150.. and retail for twice that.
10 dollar electronics don't last.
thats the larger view of it... keeping track of these hundreds of tons of failed gismo's I see has become a problem ... so that now new 10 gismo's are built that can replace entire species, even piles and piles of previously wonderful devices, that fail and that sold for $200 to 500 dollars. so now when a 5 dollar fan relay fails on a furnace you mist by a whole new control card for a few hundred dollars...