Heat cycles back on very frequently with Honeywell vision pro


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Old 12-01-07, 05:20 AM
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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
 
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Old 12-01-07, 05:44 AM
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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
 
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Old 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
 
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Old 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.
 
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Old 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?
 
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Old 12-01-07, 11:17 PM
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Originally Posted by Jarredsdad View Post
I
But 340 isn't that an outdoor tstat?
Yes it is, and 2 is for outdoor sensor for heat pump.
 
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Old 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?
 
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Old 12-01-07, 11:56 PM
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Originally Posted by Jarredsdad View Post
Change 250 back to 9 (elect heat).
The book may say 9, but god, the thing comes on and off way too often. avg 9 times an hour at 50% load. I've had others change it from 9 to 4 or 5, and they said it don't cycle as often.



Do you have an outdoor stat?
He does, #340 is turned on.
 
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Old 12-02-07, 10:44 AM
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Thanks for all of the replies, here goes:

Originally Posted by Jarredsdad View Post
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?
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.

Originally Posted by KField View Post
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
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.


Originally Posted by Jay11J View Post
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.
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!
 
 

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