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Originally Posted by CoolShowers I found out about weathering the hard way haha! They're a sub company of rheem/ruud I think? Also Thermalzone and a few others.
Originally Posted by klee7013 x2 weatherking also Also some of the older amana models energized in heat. I think. I found out about weathering the hard way haha! They're a sub company of rheem/ruud I think?
Originally Posted by 54regcab +1, I have yet to run into a Rheem/Ruud that energizes in cool. x2 weatherking also Also some of the older amana models energized in heat. I think.
Somewhere a jumper may need clipped...
ive got a question very similar to this. installed a new comfortsense tstat with new lennox heat pump and air handler. reversing valve wouldnt energize ( allow cooling). i double checked wiring and programming and didnt find anything wrong. condemned tstat and replaced with same thing, all seems to work fine but here is the kicker. very next week did essentially same system changeout and it does same deal. am i missing something obvious or did i find two bad tstats in a row?
Originally Posted by Kevin O'Neill Last Ruud unit I worked on still energized the reversing valve in heat. Rheem too. +1, I have yet to run into a Rheem/Ruud that energizes in cool.
Last Ruud unit I worked on still energized the reversing valve in heat. Rheem too.
Thanks guy.
Depends on the manufacturer. Rheem, Ruud, and their subdivisions were notorious for the reversing valve energizing in heating. I think they've switched and pretty much any new heat pump reversing valve energizes in cooling, which is the "O" terminal. The "B" terminal was used on older stats for energizing in heat. Now, pretty much all stats give you the option of how the reversing valve energizes in the installer options.
yes b energizes the rv in heat mode mainly ruud/rheem
Heat pump thermostats I am working on a Goodman 3 ton heat pump and I notice there is a B port and O port for heat pump t-stat. I know that O will be energized the 3 ways reversing valve during cooling mode. Does B work the other way around? which B will energized during heat mode?? Is all reversing valve work the same way, which only energized during cooling mode?
Heat pump thermostats
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