Heat cycles back on very frequently with Honeywell vision pro
#1
12-01-07, 05:20 AM
Heat cycles back on very frequently with Honeywell vision pro
I'm not sure if this is possibly a setup or configuration issue (or just normal), but I have a 2 stage heat pump/strips controlled by a Honeywell VisionPro 8000. Now that it's winter again, it keeps the temp at the programmed temperature, but does so with the heat on almost all day. Heat turns on for 5 minutes, shuts off for 1, then back on, etc.
Now I'm sure it's nice that the tstat is really trying to keep the temperature EXACTLY as set, but I can live with some +/- around the set temperature.
Am I missing something, or is this how it goes?
thanks
Now I'm sure it's nice that the tstat is really trying to keep the temperature EXACTLY as set, but I can live with some +/- around the set temperature.
Am I missing something, or is this how it goes?
thanks
#2
12-01-07, 05:44 AM
here are my settings:
120 - 20
130 - 07
140 - 12
150 - 1
160 - 4
170 - 7
190 - 0
200 - 0
220 - 2 (was 3, just changed)
250 - 4 (was 9, just lowered)
270 - 9
280 - 0
300 - 0
320 - 0
330 - 1
340 - 2
350 - 20
360 - 40
500 - 2
510 - 0
520 - 0
530 - 0
540 - 4
580 - 5
600 - 90
610 - 50
640 - 12
650 - 90
660 - 90
680 - 1
120 - 20
130 - 07
140 - 12
150 - 1
160 - 4
170 - 7
190 - 0
200 - 0
220 - 2 (was 3, just changed)
250 - 4 (was 9, just lowered)
270 - 9
280 - 0
300 - 0
320 - 0
330 - 1
340 - 2
350 - 20
360 - 40
500 - 2
510 - 0
520 - 0
530 - 0
540 - 4
580 - 5
600 - 90
610 - 50
640 - 12
650 - 90
660 - 90
680 - 1
#3
12-01-07, 09:32 PM
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What you may be missing may have nothing to do with the heat pump. Your house may be losing heat at a much faster rate than you are aware of and the cycling is your first tip off. Secondly, there may be a cold draft behind your thermostat. We always plug the hole where the wires come through the wall with tissues. It prevents air from coming out of the hole and giving a false reading to the thermostat.
Ken
Ken
#4
12-01-07, 10:09 PM
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When you changed 250 to 4, it will leave the Aux on longer, and off longer. 9 is just too many cycles per hour.
I would change 270 - 4 as well.
Did you change 680 to 1? I would put it back to 2.
I agree with Ken, check behind the t-stat and fill the hole with insuation, or a rag.
I would change 270 - 4 as well.
Did you change 680 to 1? I would put it back to 2.
I agree with Ken, check behind the t-stat and fill the hole with insuation, or a rag.
#5
12-01-07, 11:10 PM
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It's late (early) and I don't feel like getting the cheat sheat from the truck.
But 340 isn't that an outdoor tstat?
But 340 isn't that an outdoor tstat?
#7
12-01-07, 11:36 PM
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Buggs me so I went and got the sheet
Change 250 back to 9 (elect heat).
170 is set to 2 heat 1 cool heat pump. if it's two stage it should be set to maybe 9.
Do you have an outdoor stat?
170 is set to 2 heat 1 cool heat pump. if it's two stage it should be set to maybe 9.
Do you have an outdoor stat?
#8
12-01-07, 11:56 PM
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Originally Posted by Jarredsdad
Change 250 back to 9 (elect heat).
Do you have an outdoor stat?
#9
12-02-07, 10:44 AM
Thanks for all of the replies, here goes:
Yes, sorry I have a 2 heat 1 cool heat pump (I wasn't concerned with the AC here so I didn't mention it). I do have a C7089 outdoor sensor connected.
I think I'm good on the heat loss. All windows are draftless and I just put a second layer of 8" insulation (on top of exisiting 8") in the attic. Garage is also insulated.
I do have a small hole behind the tstat, I'll fill that with some insulation. I didn't think about behind there.
Thanks, I'll change 270 too, I didn't see that one initially. I had changed 680 awhile ago, I'll put it back to 2.
Thanks again for the help!
Originally Posted by Jarredsdad
Change 250 back to 9 (elect heat).
170 is set to 2 heat 1 cool heat pump. if it's two stage it should be set to maybe 9.
Do you have an outdoor stat?
170 is set to 2 heat 1 cool heat pump. if it's two stage it should be set to maybe 9.
Do you have an outdoor stat?
Originally Posted by KField
What you may be missing may have nothing to do with the heat pump. Your house may be losing heat at a much faster rate than you are aware of and the cycling is your first tip off. Secondly, there may be a cold draft behind your thermostat. We always plug the hole where the wires come through the wall with tissues. It prevents air from coming out of the hole and giving a false reading to the thermostat.
Ken
Ken
I do have a small hole behind the tstat, I'll fill that with some insulation. I didn't think about behind there.
Originally Posted by Jay11J
When you changed 250 to 4, it will leave the Aux on longer, and off longer. 9 is just too many cycles per hour.
I would change 270 - 4 as well.
Did you change 680 to 1? I would put it back to 2.
I agree with Ken, check behind the t-stat and fill the hole with insuation, or a rag.
I would change 270 - 4 as well.
Did you change 680 to 1? I would put it back to 2.
I agree with Ken, check behind the t-stat and fill the hole with insuation, or a rag.
Thanks again for the help!
