Page 1 of 3 123 LastLast
Results 1 to 10 of 30

Thread: ac refrigerator on inverter

  1. #1
    hecleo50 Guest

    Angry ac refrigerator on inverter

    want to use a conventional refrigerator with my 3000 watt inverter..is there any units out there that are efficient enough to run on a small solar system? Dont want to use propane ! Recently purchased a new magic chef 10 cu.ft. fridge 1.96 amps ..but after 3 months of use it quit working ...its under warranty but i noticed that the manual says "this unit is not designed to run on an inverter".. Any suggestions !!

  2. #2

    Default Re: ac refrigerator on inverter

    Quote Originally Posted by hecleo50@yahoo.com View Post
    ....but i noticed that the manual says "this unit is not designed to run on an inverter".. Any suggestions !!
    What that really means is that they are not designed to run on a modified sine wave inverter.

    We use standard off the shelf Energy Star rated refrigerators etc all the time in our off grid installations, but we also only use sine wave inverters, such as Outback, Magnum, or Xantrex.
    Northern Arizona Wind & Sun Forum & Website Administrator

  3. #3
    Join Date
    Mar 2006
    Location
    SF Bay Area (California)
    Posts
    21,264

    Default Re: ac refrigerator on inverter

    Link to True Sine Wave Inverters (yea, WindSun's online store ) and a couple Inverter FAQ's where you can read about TSW and Modified Square Wave Inverters.

    -Bill

    PS: TSW inverters (which are, overall, more efficient) are much more expen$ive than MSW inverters--So, one option is to get a smaller TSW inverter for sensitive loads, and a large (and cheap) MSW inverter for running power tools and a well pump.

  4. #4

    Default Re: ac refrigerator on inverter

    I ran a standard 16 Cu. Ft. Frigidaire off 3kW MSW inverter for years - no problem, except it made 'clattering' noise when starting: the motor had a hard time getting up to speed. Because of this and other motor needs, I replaced the MSW with a True Sine Wave and now everything runs better. I suspect your 'frige's motor burnt out from the extra effort of trying to run off what it saw as 'low voltage'.
    The MSW are really only good for light bulbs. I agree with BB about getting a small one just for the 'frige as a viable solution: mine only draws 500 watts at defrost, and running draw is about half that (it varies with conditions).
    1220 Watts of PV, OB MX60, 232 Amp hrs, OB 3524, Honda eu2000.

    Ohm's Law: Amps = Volts / Ohms
    Power Formula: Watts = Volts * Amps

  5. #5
    Join Date
    Mar 2006
    Location
    SF Bay Area (California)
    Posts
    21,264

    Default Re: ac refrigerator on inverter

    And, I should add, if you don't have one yet, get a Kill-A-Watt meter...

    Really helpful to measure and understand your AC loads (note, Watts are not the same as Volt*Amps or VA). Also can help you understand your total power used during the day and figure out where you can conserve.

    -Bill

  6. #6

    Default Re: ac refrigerator on inverter

    Quote Originally Posted by Cariboocoot View Post
    The MSW are really only good for light bulbs. .
    Sweeping comments like this dont really help anyone, Im not having a pop at Cariboocoot but MSW Inverters and especially MSW Inverter Chargers have a place in the market place. They will run TVs ,Satalite Reciever , Power Tools , Fridges , not all but many basic types without fancy digital and electronic controls without problems. Yes there is a fry and die list and these items can easily be avoided with a little research but as I said in an earlier post many people live happily full time with a MSW inverter charger and are happy with there life style. I ran a DR2424E for two years and my mate two years after me. Yes I m on TSW now, but when my permanent home was still a holiday home I was glad to leave an inexpensive but totally adaquate MSW insitu for our needs. The times I needed TSW forcharging laptop and power tools I waited till the genny was running, if MSW inverters were only good for light bulbs I dont think Xantrex would have bothered to upgrade there Dr units to the new TR models with PFC with low volume sales for a light bulb only unit.

    MSW arent the be all end all but the are certainly more versatile than just fit for light bulbs and come with a considerable price saving over TSW .

    IMHO
    Outback FlexpowerOne FP1-6 , with Mate 3, Solar 2400W 12 x 200wp Isophoton mono Fixed Array, Tracked Single axis 972wp from 6 x 162wp Sharp Poly. Midnite Classic 150 CC. The Battery bank 12 yrs old and counting ! 700ah Exide 24 x 2v Cells, Zepher Power Vent, Midnite PV Combiner and SPD. To fit Lakota Longbow 48v Windturbine. Gesan 4.5kw 1500rpm Deutz Engined Autostart Diesel Generator.

  7. #7

    Exclamation Re: ac refrigerator on inverter

    Links to discussions re MSW vs TSW inverters:

    http://www.xantrex.com/support/readf...did=268&p=1348
    http://www.xantrex.com/web/id/260/docserve.asp
    http://www.homepower.com/article/?fi...g128_Letters_3

    FWIW, I use both MSW and TSW inverters. My small MSW model works well for charging laptop computers in my truck. I use only TSW inverters at home, and the instructions for my cordless tools' battery charger state to not use an MSW inverter.

    Xantrex does indeed make MSW inverters, and some are quite poplular. But, they also make several TSW inverter models, and their literature addresses some of the application advantages:

    http://www.xantrex.com/web/id/7/p/1/pt/8/product.asp
    http://www.xantrex.com/web/id/9/p/1/pt/5/product.asp
    http://www.xantrex.com/web/id/10/p/1/pt/7/product.asp

    HTH,
    Jim / crewzer
    Last edited by crewzer; January 7th, 2009 at 4:41 PST.
    120618: System off-line for a while...

  8. #8

    Default Re: ac refrigerator on inverter

    Anybody here started out with an MSW and not either switched to or added TSW?

    By "light bulbs" I of course meant simple applications. I have used MSW to run 'frige and computer set-up, and I still recommend TSW if you're going to do that. It is essential for AC induction motors; they may run on MSW, but their lifespan will be shortened.
    1220 Watts of PV, OB MX60, 232 Amp hrs, OB 3524, Honda eu2000.

    Ohm's Law: Amps = Volts / Ohms
    Power Formula: Watts = Volts * Amps

  9. #9
    Join Date
    Sep 2007
    Location
    Telford,Pa
    Posts
    738

    Default Re: ac refrigerator on inverter

    Ran a 4 Cu. Ft. Magic Chef off a MSW this summer. I listed the current draw and temps of the motor between the MSW and grid power somewhere here.
    Ken
    Telford,Pa
    Old Homepage: http://home.comcast.net/~n3qik
    Updated 6-7-2009

    Updated Homepage: http://home.comcast.net/~n3qik/site/?/home/
    Updated 12-3-2011

    Home Automation: http://n3qik.homeip.net:5800 Password = guest
    Software/hardware is 100% complete. At least for today. Tomorrow is a different story.
    Updated 2-17-2012

  10. #10

    Wink Re: ac refrigerator on inverter

    "Somewhere here": http://forum.solar-electric.com/show...rter#post20837

    HTH,
    Jim / crewzer
    120618: System off-line for a while...

Similar Threads

  1. Replies: 18
    Last Post: June 16th, 2013, 22:57 PDT
  2. Minimum inverter for small refrigerator
    By Steve961 in forum Off Grid Solar & Battery Systems
    Replies: 20
    Last Post: July 27th, 2010, 18:07 PDT
  3. Refrigerator power
    By Moe in forum Energy Use & Conservation
    Replies: 77
    Last Post: April 7th, 2010, 17:18 PDT
  4. New Refrigerator?
    By Tumbleweed in forum Energy Use & Conservation
    Replies: 4
    Last Post: August 20th, 2009, 18:53 PDT
  5. Gas refrigerator?
    By nu2solar in forum Solar Product Reviews & Opinions
    Replies: 12
    Last Post: May 20th, 2008, 11:00 PDT

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •