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06-22-2022, 01:35 PM
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#1
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Seasoned Camper
Join Date: Mar 2019
Location: Cookeville
Posts: 51
M.O.C. #23654
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No AC with Generator
We cannot get AC to come on will running Generator. We have a 2022 3121RL, Inverter showing Status: Amber, Display: Green, 12.3 volts. Have a CSW2012HX pure sine wave inverter.Thanks
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David & Debbie
2022 3121RL Legacy Edition, Cobalt, 2021 Chev 2500 Diesel
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06-22-2022, 01:40 PM
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#2
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Montana Master
Join Date: Feb 2008
Location: woodstock
Posts: 565
M.O.C. #8174
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Did you put your air in off mode then turn your air on 1 at a time, what size is the air?
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Ed
Montana Master
Woodstock Ga
2020 3931 FB Legacy
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06-22-2022, 01:46 PM
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#3
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Seasoned Camper
Join Date: Mar 2019
Location: Cookeville
Posts: 51
M.O.C. #23654
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13 in front and 15 in rear I believe. Yes tried turning on again and also checked breaker
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David & Debbie
2022 3121RL Legacy Edition, Cobalt, 2021 Chev 2500 Diesel
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06-22-2022, 02:43 PM
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#4
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Seasoned Camper
Join Date: Mar 2019
Location: Cookeville
Posts: 51
M.O.C. #23654
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Just realized no Power to outlets, except solar outlets go I switch in bathroom ok.
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David & Debbie
2022 3121RL Legacy Edition, Cobalt, 2021 Chev 2500 Diesel
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06-22-2022, 02:52 PM
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#5
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Montana Master
Join Date: Jan 2022
Location: Shingle Springs
Posts: 2,573
M.O.C. #30417
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Your inverter has nothing to do with the AC. Your AC will only run on gen or shore power. If it's not running check your breaker, thermostat or the unit itself.
Correction, I do recall an option for a second inverter prep for the AC unit. But the AC should still work on gen and shore regardless.
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Tony & Donna & the best dog ever, Murphy.
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide
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06-22-2022, 02:59 PM
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#6
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Seasoned Camper
Join Date: Mar 2019
Location: Cookeville
Posts: 51
M.O.C. #23654
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AC works great on Shore power. So I assume no issues with AC unit, therm or breaker. But thank you very much for trying to help
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David & Debbie
2022 3121RL Legacy Edition, Cobalt, 2021 Chev 2500 Diesel
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06-22-2022, 03:02 PM
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#7
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Montana Master
Join Date: Jan 2022
Location: Shingle Springs
Posts: 2,573
M.O.C. #30417
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So it works on shore but not on gen. Check the transfer switch.
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Tony & Donna & the best dog ever, Murphy.
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide
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06-22-2022, 03:10 PM
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#8
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Seasoned Camper
Join Date: Mar 2019
Location: Cookeville
Posts: 51
M.O.C. #23654
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Where is the Transfer Switch? Have checked the battery switches
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David & Debbie
2022 3121RL Legacy Edition, Cobalt, 2021 Chev 2500 Diesel
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06-22-2022, 03:30 PM
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#9
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Montana Fan
Join Date: Aug 2020
Location: Aurora
Posts: 429
M.O.C. #26926
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There are 2 circuit breakers in your Onan. Pull off the front cover and the breakers are top left - make sure both are on before checking the ATS.
The ATS is behind the rear wall of the basement, behind the panel closest to the door side.
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Rip & Beth
2021 3121RL Legacy Cobalt FBP, MORryde IS & pin box
2020 F350 PSD CCLB SRW
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06-22-2022, 03:38 PM
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#10
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Seasoned Camper
Join Date: Mar 2019
Location: Cookeville
Posts: 51
M.O.C. #23654
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Thanks, will check these out, appreciate you time.
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David & Debbie
2022 3121RL Legacy Edition, Cobalt, 2021 Chev 2500 Diesel
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06-22-2022, 06:34 PM
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#11
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Montana Master
Join Date: Jan 2022
Location: Shingle Springs
Posts: 2,573
M.O.C. #30417
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There is a transfer switch that the shore power and gen connect to. It's usually in the utility compartment under the steps. If the gen is working and the TS is working you'll hear a clunk after 30 seconds of starting the gen. Best test is to unplug shore and start the gen. If you hear the clunk the TS should have sent power to your AC outlets. If no clunk then no power from the gen or faulty TS or wiring to the TS.
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Tony & Donna & the best dog ever, Murphy.
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide
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06-22-2022, 06:47 PM
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#12
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,685
M.O.C. #4831
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The 12.3V display on the inverter tells me the converter is not charging the batteries. The converter uses 120V power so it sounds like the generator is not passing power into the RV>
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Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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06-22-2022, 08:47 PM
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#13
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Seasoned Camper
Join Date: Mar 2019
Location: Cookeville
Posts: 51
M.O.C. #23654
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Thank you, will check that out .
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David & Debbie
2022 3121RL Legacy Edition, Cobalt, 2021 Chev 2500 Diesel
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06-29-2022, 02:25 PM
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#14
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Seasoned Camper
Join Date: Oct 2019
Location: Peoria
Posts: 84
M.O.C. #25158
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Quote:
Originally Posted by tricky
we cannot get ac to come on will running generator. We have a 2022 3121rl, inverter showing status: Amber, display: Green, 12.3 volts. Have a csw2012hx pure sine wave inverter.thanks
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transfer switch is the problem
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06-29-2022, 02:36 PM
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#15
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 2,892
M.O.C. #24086
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There was a bad batch of transfer switches.
I believe Progressive Dynamics issued a recall on them.
If that's what you determine it is, call their help desk. They will ship you a new one.
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Daryl and Marianne,
2019 3130re 20th Anniversary Edition
2016 F350 Lariat
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06-29-2022, 03:29 PM
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#16
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Montana Master
Join Date: Aug 2015
Location: Mena
Posts: 504
M.O.C. #17723
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Is this the first time running the rig on genny?
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Ron & Rhonda
2021 3230CK Montana Legacy w/ Super SolarFlex
(old rig) 2015 Montana 3611RL 8K I.S., Disk Brakes, Sailun Tires
2015 F350 XLT Crew Dually 20K B&W Companion
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06-29-2022, 10:14 PM
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#17
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 5,182
M.O.C. #1920
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It’s a 2022, so it has a Southwire ATS. The problem last year was the PD ATS. It’s under warranty, your dealer should have caught that in the PDI. Your ATS doubles as an EMS, so if you have an open ground, low voltage, high voltage, open neutral, etc it will not let power through. It could be wires crossed at the ATS, a loose wire, etc. I would start with Rip’s suggestion. Also, with factory installed Solar you would benefit from our Montana Solar Flex Facebook page. Keep us updated on your progress.
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Ron and Terrie Ames plus Meg - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar+ Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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06-30-2022, 05:51 AM
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#18
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Montana Master
Join Date: Aug 2015
Location: Mena
Posts: 504
M.O.C. #17723
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Do you have a Bonded plug for the genny?
A bonded plug ties the neutral and ground together.
Usually an EMS will indicate an open ground and not allow power to pass.
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06-30-2022, 12:01 PM
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#19
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Montana Master
Join Date: May 2020
Location: UPLAND
Posts: 1,279
M.O.C. #26190
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__________________
2019 Keystone Montana 3560RL, 2020 Chevy 2500 HD, Firestone airbags, Air Lift wireless compressor, Curt gooseneck, 20K Reese Goosebox, TST-507, USMC combat vet & retired LEO. Robert, Anika, Breanna, Dylan (daughter-in-law Stephanie). & our Great Pyrenees Layla
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06-30-2022, 01:40 PM
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#20
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Montana Fan
Join Date: Aug 2020
Location: Aurora
Posts: 429
M.O.C. #26926
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David,
Is this an onboard generator (usually Onan if factory installed)? We're all trying to help, but it would help us to help you if we know. The open ground is an issue when using a prtable generator that quickly becomes an issue when you have an EMS system which, as others have noted, will shut down power when it senses the open ground.
__________________
Rip & Beth
2021 3121RL Legacy Cobalt FBP, MORryde IS & pin box
2020 F350 PSD CCLB SRW
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