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07-15-2014, 05:16 PM
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#1
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Member
Join Date: Apr 2014
Posts: 55
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Generator won't run A/C
So I posted in another topic that I bought a dometic lw3000 plus and it would run my 13500 a/c. Well that was before I tried to run it on a hot day 😓.
On our last trip 4th of July weekend I tried to run ac. the fan would run for about 30 seconds then trip the generator. I saw a video on youtube showing how to run the ac w this generator but still no luck.
Do I need a bigger generator? Or would a hard start capacitor help. I donot see that the ac has one. The TT is a 2014 26tbud.
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07-15-2014, 05:25 PM
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#2
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Senior Member
Join Date: Sep 2010
Location: Eastern Ontario
Posts: 4,167
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When trying to run your AC, was the water heater and refrigerator on propane? If on electric you probably were exceeding capacity of your generator.
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Fonzie
2011 Rockwood 8319SS with ProPride 3P hitch/GoodYear Marathons/TST TPMS 507
2019 F350 Ruby Red 6.7l diesel 3.31 axle electronic locker
Yamaha 3000iseb generator:Progressive Ind. EMS-HW30C : Eastern Ontario
Nights Camped: 2014 (18) 2015 (18) 2016 (36) 2017 (32) 2018 (42) 2019 (28) 2020 (35)
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07-15-2014, 05:27 PM
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#3
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Member
Join Date: Apr 2014
Posts: 55
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I turned everything off water heater, fridge, I even tried turning off all breakers except the ac
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07-15-2014, 05:34 PM
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#4
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Senior Member
Join Date: May 2014
Location: Alberta - East of the Rockies, West of the Rest
Posts: 1,785
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1. Do you have a way to check how many Amp the air conditioner draws, looks like the generator can deliver max. 23 Amp at 120 Volts.
2. Make sure nothing else draws electricity and the batteries are fully charged, the converter/charger draws a substantial amount of power until the batteries are full.
3. Don't use extension cords.
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2018 RAM 5500 Laramie CC
Sold: Riverstone Legacy 38RE, 960 Watt Solar, 6x6 Volt AGM Battery Bank, Freedom SW 3012 Inv/Charger
Ordered: 2021....
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07-15-2014, 05:35 PM
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#5
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Senior Member
Join Date: Sep 2010
Location: Eastern Ontario
Posts: 4,167
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According to their website, it should be able to power your AC.
(With a clean, stable power for all home or work applications, the LW3000 Plus easily powers a 13,500 BTU air conditioner.)
I have a Yamaha 3000 and it powers my 13.5K AC with ease. Maybe you need to install a hard start capacitor. Others will chime in with more info at what to do next hopefully.
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Fonzie
2011 Rockwood 8319SS with ProPride 3P hitch/GoodYear Marathons/TST TPMS 507
2019 F350 Ruby Red 6.7l diesel 3.31 axle electronic locker
Yamaha 3000iseb generator:Progressive Ind. EMS-HW30C : Eastern Ontario
Nights Camped: 2014 (18) 2015 (18) 2016 (36) 2017 (32) 2018 (42) 2019 (28) 2020 (35)
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07-15-2014, 05:40 PM
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#6
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Member
Join Date: Apr 2014
Posts: 55
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Not sure if these pics help
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07-15-2014, 05:42 PM
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#7
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Senior Member
Join Date: May 2014
Location: Alberta - East of the Rockies, West of the Rest
Posts: 1,785
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Quote:
Originally Posted by ogmonte
I turned everything off water heater, fridge, I even tried turning off all breakers except the ac
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I'm guessing your converter/charger is still charging the batteries which can be between ~5 and ~15 Amp AC, when you add the initial draw from the air conditioner of ~15 to ~20 Amp that could be too much.
Try running the generator for at least and hour or so before you start the air conditioner.
__________________
2018 RAM 5500 Laramie CC
Sold: Riverstone Legacy 38RE, 960 Watt Solar, 6x6 Volt AGM Battery Bank, Freedom SW 3012 Inv/Charger
Ordered: 2021....
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07-15-2014, 05:50 PM
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#8
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Senior Member
Join Date: May 2014
Location: Alberta - East of the Rockies, West of the Rest
Posts: 1,785
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Quote:
Originally Posted by fonzie
According to their website, it should be able to power your AC.
(With a clean, stable power for all home or work applications, the LW3000 Plus easily powers a 13,500 BTU air conditioner.)
I have a Yamaha 3000 and it powers my 13.5K AC with ease. Maybe you need to install a hard start capacitor. Others will chime in with more info at what to do next hopefully.
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Only difference is your Yamaha 3000iseb has the boost option which the OP's doesn't have, that makes it a little trickier.
__________________
2018 RAM 5500 Laramie CC
Sold: Riverstone Legacy 38RE, 960 Watt Solar, 6x6 Volt AGM Battery Bank, Freedom SW 3012 Inv/Charger
Ordered: 2021....
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07-15-2014, 05:52 PM
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#9
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,268
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Our Yamaha 3000Sib also has trouble sometimes even when not in ECO depending on outside air temp.
Putting in a time delay module to delay fan start up until after the compressor is on speed solved it.
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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07-15-2014, 05:53 PM
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#10
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Member
Join Date: Apr 2014
Posts: 55
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I will try testing the amps and letting generator run for an hour thanks
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07-15-2014, 05:53 PM
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#11
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Member
Join Date: Apr 2014
Posts: 55
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Were would I get the time delay module?
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07-15-2014, 06:03 PM
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#12
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Senior Member
Join Date: May 2014
Location: Alberta - East of the Rockies, West of the Rest
Posts: 1,785
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Herk, I installed the Amp/Volt meters you recommended a couple of weeks ago, they are a real eye opener. Thanks
__________________
2018 RAM 5500 Laramie CC
Sold: Riverstone Legacy 38RE, 960 Watt Solar, 6x6 Volt AGM Battery Bank, Freedom SW 3012 Inv/Charger
Ordered: 2021....
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07-15-2014, 06:16 PM
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#13
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Senior Member
Join Date: Apr 2013
Location: South Jordan, Utah
Posts: 349
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I have the same generator/set up. We need to use the A/C during the summer camping we do in the southern Utah desert. (105) yesterday. Had the exact same problem when the temps were hi. The 30 amp breaker would trip when the compressor would kick in. Called dometic customer support. Excellent response! They'll need the model number from the A/C unit. If you need to find it just remove the plastic diffuser inside the TT. There is a factory sticker right there. Don't forget your glasses. They sent me a soft start kit no charge specific for the model A/C on the TT. Wired it up inside the A/C unit and have not any issues since. Their customer support folks absolutely stand behind their claim that the Dometic 3000 gennie will run the 13,500 A/C. It will. Just remember higher outside temps increase amp draw in your electrical service cord that feeds the TT so keep that cord as short as possible. And don't run a 100 ft extension cord cause that adds amp draw as well.
Like others have said. Let the Gennie run on full throttle for several minutes before running the A/C. Have the fridge on gas or just off for a few minutes.
Turn on the A/C and enjoy the comfort with a cold beverage.
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FR Wildwood 22 RKS
2007 1/2 Dodge 2500, Cummins 6.7
Retirement training completed
Currently enjoying second childhood
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07-15-2014, 06:21 PM
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#14
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,268
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Quote:
Originally Posted by Cypressloser
Herk, I installed the Amp/Volt meters you recommended a couple of weeks ago, they are a real eye opener. Thanks
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Real nice job and you can see the load on each line of your 50 amp service.
Perfect
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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07-15-2014, 06:24 PM
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#15
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,268
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Quote:
Originally Posted by ogmonte
Were would I get the time delay module?
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ICM Relay,Time Delay - Cooling Equipment Relays - 4E233|ICM102 - Grainger Industrial Supply
Goes in the thermostat line to the fan. 12 volt control power and NOT the 120 volt AC side.
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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07-15-2014, 06:28 PM
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#16
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Member
Join Date: Apr 2014
Posts: 55
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I will contact them tomorrow first thing, the only cord I use is the 30amp cord that came w trailer. Thanks for all the responses. I will post after talking w customer service
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07-15-2014, 07:01 PM
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#17
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Member
Join Date: Apr 2014
Posts: 55
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Canonman do u have the # you used to contact them?
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07-16-2014, 09:18 AM
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#18
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Senior Member
Join Date: Apr 2013
Location: South Jordan, Utah
Posts: 349
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The number in Elkhart Indiana is 574-294-2511
I think that's one I used. There was also an 800 # 800-544-4881, 888-446-5157
You'll be OK with that cord good heavy #10 gauge
__________________
FR Wildwood 22 RKS
2007 1/2 Dodge 2500, Cummins 6.7
Retirement training completed
Currently enjoying second childhood
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07-16-2014, 10:21 AM
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#19
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Id ALSO do as suggested by herk and install the fan delay module.
Supco makes the hard start capacitor spp6 I believe.
Ive done both to mine.
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07-16-2014, 11:24 AM
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#20
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Senior Member
Join Date: Oct 2013
Posts: 1,443
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Like others have said make sure everything is off except the ac but I found that in Auto mode, on the thermostat, the Ac would not start on a real hot day. I switched it to the on mode and ran the fan for a few minutes then switched on the cool mode and it worked fine. That was on an old 3000 watt gen I had. Looking to get a new one and was hoping the one you have would do what I wanted plz let us know if any of the tricks mentioned in the posts you received worked.
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