Digital Thermostat

I am hoping that someone might have a suggestion.....

I bought a ritetemp digital thermostat from Home Depot. I have a two wire system, one white and one black wire.

I followe the instructions for 2 wire wiring and everything worked fine. Two weeks later I came home to find the furnace running eventhough the thermostat was in the "OFF" position. I returned the thermostat and got a new ritetemp digital. I wired it up and I am having the same problem. I reversed the wires and there is no change. I have one wire to the "W" and the second to the "RH" that has the jumper.

Is it my wiring, the thermostat or an issue at the furnace?

Reply to
CRW
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It's almost always the thermostat. It's normal to have to go through several of those RiteTemp thermostats before you find one that works. I guess you lucked out on the first one, and got one that worked. Keep trying. You might get one that works again.

Reply to
Mo Hoaner

Might have to bring home three or four at a time, to save trips to the store. Price of gas, and all.

Reply to
Stormin Mormon

Oh, don't you love those Rite Temps? Honeywell work much better. Sad that you got a defective thermostat.

One friend of mine went through four thermostats before he finally called me into the picture. It was an old Heil 80 percenter. He had to turn off the switch on the side of the furnace to turn the furnace off. I did some trouble shooting and replaced the defective..... well, you trade boys know what I replaced.

Reply to
Stormin Mormon

The tires to your pinto are not a part of the furnace dumbass.

Reply to
Al Moran

Al Moran posted for all of us... I don't top post - see either inline or at bottom.

New set of recaps; course they won't last because he uses motorcycle ones which are two sizes too small.

Reply to
Tekkie®

Well, for guys who claim to be heating and AC fellows, you sure are doing a poor job of internet diagnosis. How sad. You both had a perfect chance to display some professional wisdom. Your posts speak volumes about you.

Reply to
Stormin Mormon

Well, teased you enough about the thermostat. That's a really, really old joke on this list.

At this point, one of a couple problems come to mind. It's possible that the thermostat wire is worn through,a nd shorting.

But, more likely there is a sticky relay inside the furnace which is not releasing. It is time to call a HVAC repair company. Another thermost is not likely to change anything except the thermostat.

Please let us know how things work out.

Reply to
Stormin Mormon

Didn't think you would know. Well, even ignorant people such as yourself can type.

Reply to
Stormin Mormon

Wait, WAIT!. Lemme guess, Chris. Im guessing you replaced................."Your shit for brains"? Bubba

Reply to
Bubba

You replaced the friend???

Reply to
daytona

Please dont.

Hey Chrissy boi...what relay would that be? I have a feeling that hes got a gas unit, UNLESS of course its an electric, and then chances are, its not a RELAY, but a sequencer, and that makes much more sense..but hey...your ball aint working..since you cant see what the issue is over the net eh? Unless of course, one of your magical Mormy aliens told you the issue.

Hey..you wanna show professional internet troubleshooting? Show us...here is a simple one.

Customer calls. Has a LuxPro stat that he wants wired. Simple enough. 4 wire. No common. Just R, G Y and W......old stat was a simple COOL ONLY White Rodgers mercury stat. Sep T87F for the electric furnace...Coleman if it matters.. The Lux is for the Gas-electric thats wired for AC only....leaving the W out of the equasion above...Old Day and Night, if it matters to you... Now..here is the issue, and think about it real careful, cause it took me about 20 seconds talking to the owner to get that information posted above to know what the problem was.

Issue: When the Lux was turned to ON, fan position, the blower would start and run fine. When the stat was set to AUTO, and COOL, and turned low enough that the AC would start, the compressor, condensor fan motor and nothing else would run. IE: No Blower. Now, it runs fine, no matter what the setting, remember....heat is NOT used on the old gas-electric package unit..the gas valve is not even in the unit..

The repair was simple as pie...what was it?

No parts replaced. No stuck relays.. No more than a service call and 20 minutes of time to insure it all worked and worked correctly after a under 5 minute repair.

What was it?

Amaze us with your tech ability. Any tech thats been in the field a bit can figure out basic electricity. Lets see how much knowledge you really have, and regs, please leave this one to the new internet god of repair advice.

Id bet the farm you aint got a clue, and if you dont Chris, be man enough to admit it.

Reply to
aka-SBM

I'll admit I've not used one of these thermostats. But, from what you're describing, I've got two ideas. The first is less likely.

1) there is a switch inside the thermostat to change from heat pump to split system. Causes the therm to supply signal to the G lead (or not). 2) The new thermostat shoulda been wired to Y2 instead of Y1, at the air handler. Or the other way around. Y1 instead of Y2.

Since the customer replaced a two wire stat, you didn't say if s/he pulled a new wire. But we'd have to guess s/he did.

Reply to
Stormin Mormon

Had NOTHING to do with the thermostat.

Reply to
aka-SBM

Nope..I told you that there were TWO thermostats. Read it again.

Did I say it had a Y2? Nope..just a Y...NO HEAT PUMP IN THIS.

I didnt say that either, I said, that it had a W, Y, G, and R...read it again.

Now think Chrissy, so far, you are so far off its silly. You didnt read, therefore in the Usenet world, you didnt listen..so...lets try it again....

No parts replaced. Not a heat pump Fan would run with fan switch to ON, but not auto. Compressor and condensor fan motor would run but no blower. GAs not conected and not used.

The answers easy and I have 5 correct answers so far...and ones from a homeowner. Sad. This is the best you got Chris?

Reply to
aka-SBM

about ten minutes later, it hits me that the Rheem I've been installing, it's YL and YH. Oops.

Reply to
Stormin Mormon

Well, th at leave the yellow wire to YH or YL at the air handler.

Reply to
Stormin Mormon

Nope..I told you that there were TWO thermostats. Read it again. CY: You did write aobut two thermostats. Quoting: "White Rodgers mercury stat. Sep T87F for the electric furnace...Coleman if it matters.. The Lux is for the Gas-electric thats wired for AC only". So, we have an old mercury T87 coming out. And a Lux going in.

Did I say it had a Y2? Nope..just a Y...NO HEAT PUMP IN THIS. CY: The equipment I've installed most of them have a YH and YL. Rheem contours.

I didnt say that either, I said, that it had a W, Y, G, and R...read it again. CY: You said that the old one was a cooling only stat. Which could have been a two wire pull.

Now think Chrissy, so far, you are so far off its silly. You didnt read, therefore in the Usenet world, you didnt listen..so...lets try it again.... CY: OK, if you think you can add anything.

No parts replaced. Not a heat pump Fan would run with fan switch to ON, but not auto. Compressor and condensor fan motor would run but no blower. GAs not conected and not used. CY: That's about what you wrote earlier.

The answers easy and I have 5 correct answers so far...and ones from a homeowner. Sad. This is the best you got Chris? CY: I didn't read any other replies. From what I can gather over the news group, those are my two ideas. Of course, if I was there at the location with my VOM, it would be a different matter.

enough.

Reply to
Stormin Mormon

"Stormin Mormon" wrote in message news:ZRxsg.19916$ snipped-for-privacy@twister.nyroc.rr.com...

That part you got right...

Wrong. GOD...ok..if the T87F is for HEAT, what in hell you thinks for the COOLING, since thats what we are talking about????????

Humm...we aint talkin about INSTALLS, we are talkin about a simple retro fit thermostat, no matter how cheap, with only two jumpers in it, one for gas, one for electric, and one for a time delay for the compressor, no C terminal, just W, Y, R and G..thats it..........

Could have been, but.... I have already told you that the FAN would run in the ON position, therefore you have at least 3. I also told you that all the wires were connected at the stat, and there was NO PROBLEM at the thermostat.

Actually no Chris...you dont need a VOM to figure this one out. All the answers are there and there are no replies to this that you can see.

Its kinda funny tho....you giving advice and you cant figure this one out and its simple.

Give ya a hint tho...

When you open the cover on the unit..the package unit that wont work right with a new stat, its simple..standard gas package controls, in order from right to left..a contactor, properly wired, a blower fan peanut relay, a fan limit control, and a capacitor. Thats in the upper control box. Lower, near the old inoperative gas valve, is nothing but a spark ignition module and the gas valve with a couple of safetys that are not even in the equasion. The blower motor is a three speed GE, yellow as a common, with red, black and blue wires as most have, with a single cap terminal. Its wired so that red, slow, is on the burner side, and black, high, is on the cooling side. The gas side is inoperative. The W lead is disconnected in the machine. The machine was installed by the landlords brother who happens to be in HVAC as a licenced contractor and this unit was a take off that was placed on a rental unit. Everything works. The blower will run as long as the stats on ON, and not when its on AUTO postion. You cant run a jumper from G to Y, cause if you do, you will cause the compressor to operate when all you want is a fan. The heat is provided by a T87F stat, THREE wire pull, with a Coleman electric furnace that is wired sep. It all works fine. Its not part of the equasion. Nothing about the Coleman matters here, since the repair was made outside in the package unit. Ill go ahead and tell you in a bit since its now painfully obvious to all the homemowners reading this that you are not qualified to make any repair ideas over the net when you cant even figure out one simple thing...BASIC ELECTRICAL TROUBLESHOOTING here Chris.

You have a fan relay thats obviously working. You have a thermostat thats obviously fine..actually, its brand new. You have a unit thats a take off from another home. and it worked fine before...oh..but wait....I did say it had a cooling only white rodgers common stat on it didnt I? Oh....goodness...you have never seen one have you? You dont have a clue what it looks like or how its wired....golly gee...you dont know if its even got a sub-base....

Ok Chrissy...its learning time.

Those stats, 1E31-910 ,that are used all over the country and are cheap as all get out, look like this:

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The one that replaced it is this:
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Now do you know what was done to the unit OUTSIDE that made it work like it was supposed to? Remember, the gas part isnt used anymore and if thats not a f****ng clue, I dont know what is.

Reply to
aka-SBM

Ready Chris? I told you it was learning time.

Simple nuff here...The relay in the unit worked fine. Thus, the fan ran on the ON position. The lack of the fan running in AUTO was due to the fact that the White Rodgers stat that is cooling only, had the G and the Y wired at the base together. The Lux didnt do this. Therefore, all one had to do, was simply remove the low speed fan ternimal from the relay, and splice the high speed line in. That makes the fan run on high when the thermostat is switched to ON, and then, you take the terminal end of the lead, and plug it on the contactor so that when it closes, BADDA BING..ya got air. Since the heat isnt used on this, but the landlord wanted the fan to run on both settings, this altho odd setup will work fine and will not have you trying to cook the motor with power applied to the low and high windings at the same time.

Reply to
aka-SBM

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