Vision Pro 8000

______________________________________________________________________ I recently installed a Vision Pro 8000 TH8321U1006. I’m fairly certain that I wired it correctly and set it up correctly, but I think the temperature guage needs to be calibrated. It’s showing about 5 degrees higher than actual. I’m using the previous thermostat as well as two other accurate thermometers and they all agree that the Vision Pro 8000 is about 5 degrees high. Is it possible to calibrate the thermostat temperature setting? I replaced a Lennox 21J7201 thermostat, my unit is a single stage cool/heat heat pump with auxillary or emergency electric heat and the wiring is as follows: Wire old new Yellow Y1 Y Green G G Orange O O/B Red R R –With jumper in place to RC Lt Blue C C White W1 AUX Black E E [this message was edited by foretm on Sun 17 Oct 18:31] Replies: foretm “Re(1):Vision Pro 8000″ , posted Mon 29 Nov 10:40: ______________________________________________________________________ Xenos, the cooling side is working fine, i’m just not too sure about the heating. I have a Lennox heat pump with 5KW heat strips. My old thermostat is a Lennox 21J7201 or 3AAT89B38E1, and my heat pump is model number CB29M-41-1P. Connections on the old T-stat were as follows: Y1 = Yellow R = Red G = Green O = Orange C = Lt. Blue W1 = White E = Black I opened up the Air handler and I see the connections as follows: C = Lt. Blue G = Green W1 = White and Black W2 = N/C W3 = N/C R = Red My connections to the Vision Pro 8000 are as follows: R/C= Red and jumped to R from factory O/B= Orange Y = Yellow G = Green C = Lt. Blue E = Black Aux= White My questions are: 1. As stated above, the black and white are jumped together in the Air Handler on W1. Does this mean that the heat strips are active anytime the heat is on? With the old thermostat anytime the heat came on, the emergency heat light was on as well, even though the T-stat was set to normal and not emergency. 2. Are my wiring connections correct? The cooling is functioning properly, but the heat seems to be less aggressive than it used to be. 3. If the white and black are jumped in the Air Handler, then should I jump the black and white on the thermostat and connect them to Aux? 4. When the heat is on in normal mode the air is slightly warm, how can I tell if the heat strips are active or not? [this message was edited by foretm on Mon 29 Nov 10:44] Xenos Webmaster “Re(2):Vision Pro 8000″ , posted Mon 29 Nov 18:09 ______________________________________________________________________ My questions are: 1. As stated above, the black and white are jumped together in the Air Handler on W1. Does this mean that the heat strips are active anytime the heat is on? With the old thermostat anytime the heat came on, the emergency heat light was on as well, even though the T-stat was set to normal and not emergency. NO, This means that the heaters will be energized on a call for 2nd stage heat or emergency heat. 2. Are my wiring connections correct? The cooling is functioning properly, but the heat seems to be less aggressive than it used to be. They appear correct, did you set option 170 for a multy stage heat pump? 3. If the white and black are jumped in the Air Handler, then should I jump the black and white on the thermostat and connect them to Aux? Basically there jumped so it wont matter. 4. When the heat is on in normal mode the air is slightly warm, how can I tell if the heat strips are active or not? Heatpumps and electric heaters do not produce high temperatures like an oil or older gas furnace. And easy way to tell if the Aux heaters are running is watch the hydro meter when the thermostat calls for aux heat. Xenos. The best way to escape a problem is to solve it. xenos Webmaster “Re(1):Vision Pro 8000″ , posted Sun 17 Oct 11:20 ______________________________________________________________________ That thermostat uses a resistor to sense the temperature. If its not reading the right temperature I would think its a cold solder joint or it’s touching another component. I recommend returning it for a replacement. Xenos. The best way to escape a problem is to solve it. Mastertech “Re(2):Vision Pro 8000″ , posted Sun 17 Oct 12:47 ______________________________________________________________________ I have found a few times when the hole were the control wire comes out brings in outside air which makes the T-stat temperature off. (If u think that is it try some duct tape over hole) foretm “Re(3):Vision Pro 8000″ , posted Mon 18 Oct 12:32 ______________________________________________________________________ Guys, thanks a bunch for the info… if you could be so kind and refer to my original post that I updated after the fact and let me know if my wiring looks accurate, I would certainly appreciate it. Mastertech “Re(4):Vision Pro 8000″ , posted Mon 18 Oct 17:48 ______________________________________________________________________ only concern i have is the W1 to Aux. W1 some times is the same as Y1 on a heat pump system. I would think the E wire would got to both E and Aux. and Y1 and W1 jumped together at Y. Not real fimilar with lennox Heat pump T-stats. Xenos would know- He’ll be on later on. xenos Webmaster “Re(5):Vision Pro 8000″ , posted Mon 18 Oct 18:46 ______________________________________________________________________ Now that’s funny, I was thinking the same thing. Strange it’s labled W1 and not just W. Xenos. The best way to escape a problem is to solve it. foretm “Re(6):Vision Pro 8000″ , posted Mon 18 Oct 18:50 ______________________________________________________________________ So Should it be wired differently…? xenos Webmaster “Re(7):Vision Pro 8000″ , posted Mon 18 Oct 19:54 ______________________________________________________________________ Well the question is what is W1. is it your Aux heat or is it the heat pump? W= heating W1= first stage heating Why would Aux heating be considered first stage. Can you see the confusion. Xenos. The best way to escape a problem is to solve it. foretm “Re(8):Vision Pro 8000″ , posted Wed 20 Oct 18:41 ______________________________________________________________________ Well if this helps… the old Thermostat only had a W1 and an E regarding the heat… So by that token I would assume the W1 is the 1st stage heat (heat pump) and E is the emergency heat (heat strips). Going with that assumption, how should it be wired…? foreman96 “Re(9):Vision Pro 8000″ , posted Tue 7 Dec 19:50 ______________________________________________________________________ you can change the temperature display offset in the intaller menu setup at number 0700 foreman

Comments are closed.