Community Forums

Cdr151 · 06-04-2019, 04:31 PM

Hello I know what most are going to say get rid of the 4 button. Someday I will. Weird thing has happened the rear thermostat works fine I have heat pump air and furnace. The front one I lost my furnace option and heat pump and the ac won’t kick on. I checked the 5 amp fuse under the cover on both. Any ideas.

RamiDav · 06-04-2019, 07:43 PM

Are you saying you have 2 thermostats ?
If you do , try swapping the thermostats and see if the problem moves
with the thermostat .
That should let you know if it is the thermostat or something else .

Cdr151 · 06-05-2019, 02:55 AM

I tried that as well and I still don’t have furnace and heat pump.

veraken · 06-05-2019, 05:15 AM

Here's a link that tells you how to reset a 4 button thermostat. I'd try that.

https://www.williamhendrix.com/RESET.html

Cdr151 · 06-05-2019, 05:38 AM

We I get back I’ll try that again I did that yesterday.

RamiDav · 06-05-2019, 05:54 AM

The next troublesome area is those little phone type connectors .
Many times just messing with them will cause a temporary fix , inspecting
and cleaning might be a good idea .
If you can get on the roof you could try swapping the control boards .
It would be a good idea to photo a picture of the dip switches positions
because I believe you will need to reposition their settings to match the
air cond it is located in .

Any chance you have had mice ? A recent owner had he data wires ( phone )
chewed and had to run a new wire and relocate the thermostat .

http://www.irv2.com/forums/f115/temp...ol-440879.html

Cdr151 · 06-05-2019, 07:48 AM

No mice that I have seen I’ll try switching out the boards.

PlanBee · 06-05-2019, 08:16 AM

Mine did almost exactly this. I reset t-stats, checked all phone connectors with no help. Then my buddy turned off the main power disconnect for the house batteries, waited 10 seconds and turned it back on and everything re-booted and worked perfectly.

Cdr151 · 06-05-2019, 08:31 AM

I’ll try that.

AgentOrange · 06-05-2019, 08:48 AM

Hey, my front A/C went out this spring also , turned out it was the circuit board in the main power box . It was the Intellitec board . It’s still available on line for about $200 . Mine is a 2007 Holiday Rambler

Cdr151 · 06-05-2019, 09:26 AM

Thanks if it ends up being that or more than 200 I’m just going to bite the bullet and put two new ac and thermostat was hoping to get this year out then get new ones next spring.

RamiDav · 06-05-2019, 10:00 AM

Quote:

Originally Posted by Cdr151

Thanks if it ends up being that or more than 200 I’m just going to bite the bullet and put two new ac and thermostat was hoping to get this year out then get new ones next spring.

Quote:

Originally Posted by AgentOrange

Hey, my front A/C went out this spring also , turned out it was the circuit board in the main power box . It was the Intellitec board . It’s still available on line for about $200 . Mine is a 2007 Holiday Rambler

Yeah but if the intellitec board is bad you will still need a new one even with
new A/Cs .

Agent Orange , how did you determine the intellitec board was bad ?

Cdr151 · 06-05-2019, 10:02 AM

Mine is a 2000 dynasty did they have intellitec boards then.

RamiDav · 06-05-2019, 11:33 AM

Quote:

Originally Posted by Cdr151

Mine is a 2000 dynasty did they have intellitec boards then.

I believe it does have one but I'm not sure .

Up above the filter is a panel that you can remove and then access the
wiring .
If you are comfortable you can measure to see if 120 volts is present .

Does your thermostat light up , it must have 12 volts to operate the
thermostat and controls .

So you must have 12v and 120 v present at the wiring .