Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 09-06-2015, 08:59 PM   #1
Senior Member
 
Join Date: Jun 2012
Posts: 478
Air Conditioning Struggling Using Portable generator

3100 watt generator. Two roof units. Haven't had trouble running one at a time in the past. This weekend neither of them wanted to start on the portable generator. The transfer switch sounded like it was chattering. Not sure if I should be lookng at the transfer switch, the generator or the start up capacitors on the air conditioners. Does replacing the capacitors help them start easier?
__________________

__________________
1999 Harney Renegade
Used mostly for weekends at the dragstrip with my rear engine dragster and my son's jr dragster.
Bucky1320 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 09-06-2015, 09:08 PM   #2
Senior Member
 
vsheetz's Avatar


 
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 11,789
Air Conditioning Struggling Using Portable generator

Have you disabled the economy mode on the generator?

Checked for low voltage coming out of the generator?
__________________

__________________
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
vsheetz is online now   Reply With Quote
Old 09-06-2015, 09:40 PM   #3
Senior Member
 
DonDee's Avatar
 
Join Date: May 2012
Location: Spring Valley AZ
Posts: 1,204
High altitude?
__________________
Don, Mary and Spooky
'00 Bluebird Skoolie Conversion
Geo Tracker/Dodge Neon/Aprilia Scooter towed
DonDee is offline   Reply With Quote
Old 09-06-2015, 09:44 PM   #4
Senior Member
 
Join Date: Sep 2013
Posts: 596
I installed a hard start capacitor on my AC, now it starts and runs in econ mode. (on a Champion 3100w inverter). I'd highly recommend it, it's a lot less wear and tear on the genny.

I'd start with the transfer switch, since it's behaving strangely. Check for loose connections.
__________________
marcham is offline   Reply With Quote
Old 09-06-2015, 09:59 PM   #5
Senior Member
 
Join Date: Jun 2012
Posts: 478
Even on not economy mode it was doing it. Not high altitude. How do you check for low voltage during short bursts of high load?
Where do you get the hard start capacitors? I will check for loose connections as well.
__________________
1999 Harney Renegade
Used mostly for weekends at the dragstrip with my rear engine dragster and my son's jr dragster.
Bucky1320 is offline   Reply With Quote
Old 09-06-2015, 10:25 PM   #6
Senior Member
 
Join Date: Jul 2014
Posts: 9,838
Is the generator booging down when the load is applied ?

If it's running at speed and you switch on the AC, it should hold the speed but get louder as it takes on the load.

If it's slowing down, check for a plugged gas filter or worse, a dirty main jet in the carb.

If there is an open outlet you could measure the voltage there. Get a AC volt meter and stick a probe in each slot of the receptical and read the meter. It should hold 120 volts, even when starting the AC.

If It worked before, both start capacitors probably didn't fail.
__________________
twinboat is online now   Reply With Quote
Old 09-07-2015, 07:33 AM   #7
Senior Member
 
Join Date: Jun 2012
Posts: 478
Not bogging. You can hear it load the generator though. It has always been marginal when it was cycling. Once it is on, you are good to go. A hard start kit seems like a no brainer. Wish I could find them locally. Pretty cheap through Amazon though. I will check voltage also.
Thank you all for your input!!
__________________
1999 Harney Renegade
Used mostly for weekends at the dragstrip with my rear engine dragster and my son's jr dragster.
Bucky1320 is offline   Reply With Quote
Old 09-07-2015, 07:52 AM   #8
Senior Member
 
Join Date: Jul 2014
Posts: 9,838
A Kill A Watt meter will give you a idea of what going on, for $25.00.

Are you using the RV plug directly into the generator or possibly a light duty extension cord ?

You should be able to get 25 amps out of a 3100 watt generator.
__________________
twinboat is online now   Reply With Quote
Old 09-07-2015, 02:35 PM   #9
Senior Member
 
Join Date: Jun 2012
Posts: 478
Quote:
Originally Posted by twinboat View Post
A Kill A Watt meter will give you a idea of what going on, for $25.00.

Are you using the RV plug directly into the generator or possibly a light duty extension cord ?

You should be able to get 25 amps out of a 3100 watt generator.
Plugging right in, but I don't recall a kill a watt in the 30 amp rv cord style.
__________________
1999 Harney Renegade
Used mostly for weekends at the dragstrip with my rear engine dragster and my son's jr dragster.
Bucky1320 is offline   Reply With Quote
Old 09-07-2015, 02:57 PM   #10
Senior Member
 
Join Date: Feb 2011
Location: Snowbird - Waterford Mi and Citrus Springs Fl.
Posts: 3,609
Is it possible that your water heater is turned on (or other large elec. appliance), creating a larger load for the transfer switch?

In other words, have you turned everything possible off prior to hooking up the genny?
__________________
1997 37' HR Endeavor, 275hp Cat, Freightliner
03 CR-V Blue Ox, Ready Brake
ahicks is offline   Reply With Quote
Old 09-07-2015, 02:58 PM   #11
Senior Member
 
Join Date: Jul 2014
Posts: 9,838
No, but you could dog bone it for a test. One AC should run at less then 20 amps.

Or plug it in, inside and watch the volts, when the AC kicks on.

I tested mine and it ran at 15 amps.
__________________
twinboat is online now   Reply With Quote
Old 09-08-2015, 08:14 PM   #12
Member
 
Join Date: Feb 2015
Posts: 34
I would say a 3100 watt generator would be borderline for starting an A/C unit.
__________________
mn.roadking is offline   Reply With Quote
Old 09-08-2015, 09:01 PM   #13
Senior Member
 
Join Date: Jun 2012
Posts: 478
No electric element in water heater.

Yesterday afternoon we ordered two of the hard start capacitors from Amazon. I come home from work today......here! A half hour later both were installed, and tested. I can leave the generator on economy mode just as was said above. Thanks for the great tip!
__________________
1999 Harney Renegade
Used mostly for weekends at the dragstrip with my rear engine dragster and my son's jr dragster.
Bucky1320 is offline   Reply With Quote
Old 09-08-2015, 09:07 PM   #14
Senior Member
 
WSRG's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2008
Posts: 292
This may sound stupid...but I have fixed a problem like this by sanding the contacts on the plug that you plug into the gen.

Bill
__________________

__________________
BILL & CINDA SCHWARTZ
2005 SEABREEZE LX 8360
W-22 WORKHORSE 8.1 LTR.
BEAUTIFUL PHOENIX, AZ
WSRG is offline   Reply With Quote
Reply

Tags
air conditioning, generator



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Heat and Air Conditioning Vardon RV Systems & Appliances 5 08-30-2015 03:47 PM
Portable Generator Hookup Radio Flyer 5th Wheel Discussion 12 08-14-2015 12:52 PM
Country Coach roof air recyling on 30 amp shore & generator jpseven RV Systems & Appliances 2 08-08-2015 09:22 PM
Dash air conditioning MsDiana77 Class A Motorhome Discussions 11 06-28-2015 07:26 PM
Portable compressor for emergency air up adamfolger MH-General Discussions & Problems 29 03-11-2015 07:21 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:00 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.