Honeywell RTH7500D Rapid Cycling / Display
#1
11-04-10, 11:24 AM
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Honeywell RTH7500D Rapid Cycling / Display
Have it attached to a York Diamond 80 Two-stage Furance / AC. Notice that in the evening, furnace will cycle on and off about every three minutes.
Just talked to Honeywell. They said to make sure that installer setting 0170 System Type was on 9 for "Multistage Conventional Heating and Cooling". It was.
They then said to go to installer setting 0240 for Heating Rate Cycle. I do not have a 0240.
Also, it drives me nuts that I am always pushing buttons to get the backlite on. Am in dark hallway. Honeywell says that it is not adjustable.
I am looking for recommendations for a quality programmable multistage thermostat where I can adjust cycle rate and have backlite permanently on.
Also, large display for my old eyes.
Thanks
Just talked to Honeywell. They said to make sure that installer setting 0170 System Type was on 9 for "Multistage Conventional Heating and Cooling". It was.
They then said to go to installer setting 0240 for Heating Rate Cycle. I do not have a 0240.
Also, it drives me nuts that I am always pushing buttons to get the backlite on. Am in dark hallway. Honeywell says that it is not adjustable.
I am looking for recommendations for a quality programmable multistage thermostat where I can adjust cycle rate and have backlite permanently on.
Also, large display for my old eyes.
Thanks
#2
11-04-10, 06:34 PM
Forum Topic Moderator
A Honeywell VisionPro TH8321 would be a good choice.
Here is a demo...
http://www.forwardthinking.honeywell...ionprodemo.swf
Here is a demo...
http://www.forwardthinking.honeywell...ionprodemo.swf
#4
11-05-10, 08:37 AM
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Yes - Last night I checked W and W2.
I had asked Honeywell when W2 would turn on. they had said that if there was less than 2 degrees difference between what the themostat was reading and what the heat what set for, only W (stage one) would turn on. If it was more, then both stages, W and W2, would come on.
I was at the furnace and watched it under both conditions. Worked perfectly.
I had asked Honeywell when W2 would turn on. they had said that if there was less than 2 degrees difference between what the themostat was reading and what the heat what set for, only W (stage one) would turn on. If it was more, then both stages, W and W2, would come on.
I was at the furnace and watched it under both conditions. Worked perfectly.
#6
11-05-10, 11:03 AM
Jay...
Isn't this the same thing from a while back? They need to make sure they are in the INSTALLER menu..not the user menu?
I think this is the same stat I have..and though I can't find my manual right now...I remember there were things that didn't show up in the regular menu....
Isn't this the same thing from a while back? They need to make sure they are in the INSTALLER menu..not the user menu?
I think this is the same stat I have..and though I can't find my manual right now...I remember there were things that didn't show up in the regular menu....
#7
11-05-10, 11:57 AM
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I am in the "Installer Setup Menu".
It jumps from 0190 to 0320. No 0240.
Maybe there is a "Double Top Secret" Installer Menu??
Fraser Jim
It jumps from 0190 to 0320. No 0240.
Maybe there is a "Double Top Secret" Installer Menu??
Fraser Jim
#9
11-05-10, 03:51 PM
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Originally Posted by fraser jim
I am in the "Installer Setup Menu".
It jumps from 0190 to 0320. No 0240.
It jumps from 0190 to 0320. No 0240.
Again, I think you may have a bad stat.
Maybe there is a "Double Top Secret" Installer Menu??
#10
11-05-10, 08:24 PM
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Well the plot thickens.
Talked to Honeywell again. Was on hold for about 15-minutes after I asked the question. Not even Bangladesh.
Anyway, the tech. said that the only time you can access 0240, the cycle rate, is if you set 0170 to either 1 or 3. These are the settings for conventional single stage furnaces.
Tried 3 and 0240 popped up.
So, I guess, Honeywell figures that you don't need to prevent rapid cycling if you have a mutli-stage furnace.
Time for a different manufacturer.
FJ
Talked to Honeywell again. Was on hold for about 15-minutes after I asked the question. Not even Bangladesh.
Anyway, the tech. said that the only time you can access 0240, the cycle rate, is if you set 0170 to either 1 or 3. These are the settings for conventional single stage furnaces.
Tried 3 and 0240 popped up.
So, I guess, Honeywell figures that you don't need to prevent rapid cycling if you have a mutli-stage furnace.
Time for a different manufacturer.
FJ
#11
11-05-10, 08:40 PM
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That's odd.. I've helped many people with these retail stats, and no one came back to me saying 240 didn't show.. I'll have to look at the one on our display at the store.
If nothing works for me, then I'd go with the VisionPro TH8320. I don't suggest any other brands.
If nothing works for me, then I'd go with the VisionPro TH8320. I don't suggest any other brands.
