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 > Does a digital thermostat cause more cycling of furnace?

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LAdams

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Posted: 11/16/09 04:22pm Link  |  Quote  |  Print  |  Notify Moderator

I think it's built into the stat JJ - thought I remember seeing that in the Hunter manual...

Les


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JJBIRISH

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Posted: 11/16/09 05:59pm Link  |  Quote  |  Print  |  Notify Moderator

I am sure your are right Les that the hunter digital has a 3.5 min delay built in… but I am not sure it is necessary or that the old analog t-stat had one…

I could be completely wrong and am going totally from a fading memory… I thought most RV AC’s have either a time delay (sure start models) and/or a TPCR (thermal protection control relay) that serves to prevent motor start if the head pressure is to high or any other problems… while not a actual time delay prevents start until the head pressure drops (reduced load) to a acceptable level…


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NORCALer

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Posted: 11/16/09 10:20pm Link  |  Quote  |  Print  |  Notify Moderator

Darn! I just installed my new digital thermostat in my trailer last weekend and my heater shut-off and wouldn't turn back on. Oh wait, it shut off because it reached one degree above what I set it at and the temperature was perfectly stable. WOW! for a minute there I thought my thermostat "smoked" my unit.

* This post was edited 11/17/09 09:43am by an administrator/moderator *


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Posted: 11/17/09 04:43am Link  |  Quote  |  Print  |  Notify Moderator

Related question.

What company makes a digital thermostat that has the two-speed fan switch? I realize that you can add a switch to do that but I would prefer one as part of the digital thermostat, not an add-on. We run the A/C on low fan most of the time but occasionally need it on high for short periods.

willald

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Posted: 11/17/09 07:44am Link  |  Quote  |  Print  |  Notify Moderator

Haha, I knew relating that technician's comments would stir up quite a hornet's nest here, and it did. This is why I've hesitated for some time, to say anything (it was back in August when the technician came out to our site).

I don't proclaim to know 100% one way or the other, and there are some very valid points made here, to suggest there really is no harm done in using a '3rd party' thermostat. Could just be that a unit used 'part-time' like so many RVs are, have just a few extra 'cycles' to spare, like Gale said.

I just wanted to relate what the RV service professional thats been working on these units for a living longer than most of us have been camping, had to say on the subject. The fact that another RV professional on here, javaseuf, disagrees....Hahaha, I'm not sure what to think. Until I find an after-market thermostat that includes a switch for low/hi fan, as well as switching between furnace and A/C...Well, I'll stick with what I have.


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mecreature

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Posted: 11/17/09 08:38am Link  |  Quote  |  Print  |  Notify Moderator

willald wrote:

Haha, I knew relating that technician's comments would stir up quite a hornet's nest here, and it did. This is why I've hesitated for some time, to say anything (it was back in August when the technician came out to our site).

I don't proclaim to know 100% one way or the other, and there are some very valid points made here, to suggest there really is no harm done in using a '3rd party' thermostat. Could just be that a unit used 'part-time' like so many RVs are, have just a few extra 'cycles' to spare, like Gale said.

I just wanted to relate what the RV service professional thats been working on these units for a living longer than most of us have been camping, had to say on the subject. The fact that another RV professional on here, javaseuf, disagrees....Hahaha, I'm not sure what to think. Until I find an after-market thermostat that includes a switch for low/hi fan, as well as switching between furnace and A/C...Well, I'll stick with what I have.


I seen the storm coming as well.. LOL

I have a digital at home and original in the TT.. we are just pleased as punch to have heat..


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BarneyS

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Posted: 11/17/09 08:44am Link  |  Quote  |  Print  |  Notify Moderator

willald wrote:

Until I find an after-market thermostat that includes a switch for low/hi fan, as well as switching between furnace and A/C...Well, I'll stick with what I have.

Will,
I believe this one will do exactly what you have described. I have one and it works great and has a three speed fan control. It came with my Sunnybrook so I didn't have to add it, but I think it is quite pricy. Might be worth it to you though.
Barney


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javaseuf

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Posted: 11/17/09 08:49am Link  |  Quote  |  Print  |  Notify Moderator

BarneyS wrote:

willald wrote:

Until I find an after-market thermostat that includes a switch for low/hi fan, as well as switching between furnace and A/C...Well, I'll stick with what I have.

Will,
I believe this one will do exactly what you have described. I have one and it works great. It came with my Sunnybrook so I didn't have to add it, but I think it is quite pricy. Might be worth it to you though.
Barney


I do believe that the Dometic thermostat will only work with their units that have the plug-in control cable.


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javaseuf

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Posted: 11/17/09 08:53am Link  |  Quote  |  Print  |  Notify Moderator

willald wrote:

Haha, I knew relating that technician's comments would stir up quite a hornet's nest here, and it did. This is why I've hesitated for some time, to say anything (it was back in August when the technician came out to our site).

I don't proclaim to know 100% one way or the other, and there are some very valid points made here, to suggest there really is no harm done in using a '3rd party' thermostat. Could just be that a unit used 'part-time' like so many RVs are, have just a few extra 'cycles' to spare, like Gale said.

I just wanted to relate what the RV service professional thats been working on these units for a living longer than most of us have been camping, had to say on the subject. The fact that another RV professional on here, javaseuf, disagrees....Hahaha, I'm not sure what to think. Until I find an after-market thermostat that includes a switch for low/hi fan, as well as switching between furnace and A/C...Well, I'll stick with what I have.


All residential stats that are for heating and air (including the Hunter) can be switched from heat to AC. in fact, my White Rodgers stat automatically changes from heat to air.
None of the residential stats we sell out of the hundred or so different models, offers a two speed blower switch for the air.

cathanas

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Posted: 11/17/09 09:41am Link  |  Quote  |  Print  |  Notify Moderator

I installed a Hunter programmable thermostat 4 years ago my TT that is on a permanent site (it never moves). The A/C is always on at 85 degrees (when we are not there) to 75 degrees (when we are) from March through October (give or take a little depending on Texas weather). Thankfully, it continues to work great. And FYI for another thread, the refrigerator has also run continually for the last 4 years.

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