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Old 09-15-2023, 06:00 PM   #1
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AC fan only runs on hi

I have a brand new off the lot tt and the ac unit only runs the fan on hi. On low the compressor starts, but the fan never comes on. The same happens on fan only mode except no compressor running.
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Old 09-15-2023, 07:28 PM   #2
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At the thermostat, put your fan in auto.
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Old 09-15-2023, 07:40 PM   #3
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At the thermostat, put your fan in auto.
x2, if you have ducted a/c.
If you have BFC(Blast From the Center)non-ducted a/c, it would be different.
You need to provide make and model number of your a/c.
Different RVs have different brands and model numbers.
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Old 09-15-2023, 07:43 PM   #4
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x2!
X3

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Old 09-15-2023, 09:08 PM   #5
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camp in your driveway for a few days

and make a list of things (other than the a/c) that needing fixing
make sure your microwave actually makes food hot......... mine didn't lights were ON it was getting power but no heat...



once you have your list contact Forest river to get someone to fix your stuff

https://forestriverinc.com/Contact-Us


click above and s find the brand of TT you have.
ask them who close by they can recommend to fix your stuff
You don't have to use the dealer you bought it from


FR paid a mobile guy to swap out my Microwave at my house!
No out of pocket/re-reimbursement either!
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Old 09-15-2023, 09:18 PM   #6
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camp in your driveway for a few days

and make a list of things (other than the a/c) that needing fixing
make sure your microwave actually makes food hot......... mine didn't lights were ON it was getting power but no heat...



once you have your list contact Forest river to get someone to fix your stuff

https://forestriverinc.com/Contact-Us


click above and s find the brand of TT you have.
ask them who close by they can recommend to fix your stuff
You don't have to use the dealer you bought it from


FR paid a mobile guy to swap out my Microwave at my house!
No out of pocket/re-reimbursement either!
I agree with what Aussieguy says. A trial run in the driveway for a couple of days and nights or yard is always best. Make a written list of issues or concerns. Your dealer will need a copy. No misunderstanding about a written list.

Be sure you know where all the valves are located and what they do, be sure you know where the circuit breakers for 120V items, and fuses for 12V items are located. Have 2 sets of spare fuses. If the circuits are not labeled then label them.

If you need manuals, you will need the brand and the model of the item for which you need the manual. i.e. AC, microwave, Water heater, Cooktop, Converter, Tongue jack, Slide out system, etc. Then GOOGLE each one and print a copy to put in a 3-ring binder which is always on the RV.

Also, add a few pages of lined paper to record the dates when maintenance is performed: tires rotated, balanced, bearings lubricated, brakes adjusted, battery terminals cleaned, electrolyte checked, AC filter checked, coils cleaned, WH anode rod checked and replaced. etc etc.

I've always said "New only guarantees new. It does not guarantee good."

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Old 09-24-2023, 09:51 AM   #7
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How do I post

Sorry folks, can’t figure out how to ask a question separate of these posts.
I’m in a 2021 Crusader fifth wheel. The furnace runs fine but the fan from the rooftop A/C also runs. It blows cool air while the furnace runs and after it shuts down. This makes the room uncomfortable. How do I stop the fan from the rooftop. Thanks and again sorry to intrude.
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Old 09-24-2023, 11:00 AM   #8
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Sorry folks, can’t figure out how to ask a question separate of these posts.
I’m in a 2021 Crusader fifth wheel. The furnace runs fine but the fan from the rooftop A/C also runs. It blows cool air while the furnace runs and after it shuts down. This makes the room uncomfortable. How do I stop the fan from the rooftop. Thanks and again sorry to intrude.
Set the thermostat to AUTO.

Bob
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Old 09-24-2023, 11:02 AM   #9
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Originally Posted by mbwilliie View Post
Sorry folks, can’t figure out how to ask a question separate of these posts.
I’m in a 2021 Crusader fifth wheel. The furnace runs fine but the fan from the rooftop A/C also runs. It blows cool air while the furnace runs and after it shuts down. This makes the room uncomfortable. How do I stop the fan from the rooftop. Thanks and again sorry to intrude.
As said. If you have multi settings (HI/LO/AUTO) for a fan mode set to AUTO (AU etc.). Note: The furnace fan speed is not adjustable.
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Old 10-02-2023, 05:54 PM   #10
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It's a Coleman Mach 15,000 BTU, but I have no clue where to find the numbers. It has auto hi and lo, and lo doesn't run on auto either. Just the compressor. No fan.
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Old 10-02-2023, 06:38 PM   #11
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It's a Coleman Mach 15,000 BTU, but I have no clue where to find the numbers. It has auto hi and lo, and lo doesn't run on auto either. Just the compressor. No fan.
Not clear to me what the exact issue is. I understand the AC fan runs when you have the furnace on. That is a typical symptom of the fan being set to HI or LO. In that case, the fan runs when the furnace comes on.

Set the thermostat to AUTO and the fan should NOT run when the furnace comes on. There is NO speed control for the furnace fan.

If the fan doesn't run on HI or on LO then I would suspect a starting capacitor for the fan being defective.

Bob
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Old 10-02-2023, 06:52 PM   #12
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I've not tried the furnace. The AC fan only runs on the hi settings. The fan never turns on on the any lo setting. Only the compressor runs, but the fan doesn't blow.
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Old 10-03-2023, 10:05 PM   #13
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Have you removed the T-stat from the wall and checked the wire connections? Might it be as simple as the low fan control wire is not connected?
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