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Two things...........is the thermostat configured correctly and is it programmed correctly? Do you have the User's Guide for this or not?
Was this working before? Did you set it up to work on Zone 1 or not?
Did anyone mess with the dip switches on the control box or were they ever set? That may be the problem, unless this was working before and nobody touched those.
Then that would be the first place to check. The dip switches on the control board may not be set correctly. Those are on the A/C itself. Depending on the model you have, there will be either a silver colored control box on the bottom of the A/C OR just a control board up on top of the A/C. The box has a small cover that you remove to access the dip switches. There are 10 of them. Check that and see which ones are on. The box will be under the ceiling grill where the return air is and filter (if you have that model) or up on top on the side of the A/C and that can be accessed when you remove the A/C shroud. Let me know what you have.
You are welcome! Yes, that is the problem. Turn on #1 and #8 which should be the furnace. Then try it. I don't think you need #5, but I can check on that for you. Good information you sent! Wish all my customers were as through!
Sorry for the delay in getting back to you.............I was up in Oregon all day. Did you try re-booting the thermostat? I am wondering if it is working properly.
I think either the thermostat or control board is bad, but let me call Dometic in the morning and ask them to be sure. I am in California and it may be 9 or 10 my time before I get through. I will get back to you with an answer.
Sorry for the delay in getting back to you. My wife had her family out here from Florida all last week. Let me call Dometic Technical line and see if they can shed some light on this.
Don't blame you a bit..........sorry for the delay. Hope they got it figured out for you.