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12-29-2014, 03:17 PM
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#1
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Senior Member
Join Date: Feb 2014
Posts: 208
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Microwave doesn't work on inverter
On our 2014 DS 4018 we are unable to use our microwave oven or even get the lights or fan on it working while we are on battery/inverter power. Can anyone offer suggestions on what to alter in our approach, or what to do trouble shoot this? The microwave works fine when we are on shore power.
The fridge, lighting, and TV's all work whether we are on inverter or shore power.
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12-29-2014, 03:27 PM
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#2
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Registered User
Join Date: Mar 2010
Posts: 8,777
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Quote:
Originally Posted by TinMan Trvlr
On our 2014 DS 4018 we are unable to use our microwave oven or even get the lights or fan on it working while we are on battery/inverter power. Can anyone offer suggestions on what to alter in our approach, or what to do trouble shoot this? The microwave works fine when we are on shore power.
The fridge, lighting, and TV's all work whether we are on inverter or shore power.
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TinMan Trvlr
In many, (most?), RVs the microwave can not be run on battery/inverter power....only with shore or generator power.
Mel
'96 Safari
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12-29-2014, 03:47 PM
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#3
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Senior Member
Join Date: Jul 2014
Posts: 35,317
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Because a microwave uses more power then many inverters can supply. Unless you have lots of batteries, they will run down fast.
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12-29-2014, 03:49 PM
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#4
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Moderator Emeritus
Join Date: Jan 2007
Location: Litchfield Park, Arizona
Posts: 10,530
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Quote:
Originally Posted by mel s
TinMan Trvlr
In many, (most?), RVs the microwave can not be run on battery/inverter power....only with shore or generator power.
Mel
'96 Safari
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Yep... X2 Not all electrical outlets are wired to be fed by the inverter.
Rick
__________________
Rick, Nancy, Peanut & Lola our Westie Dogs & Bailey the Sheltie.
2007 Itasca Ellipse 40FD
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12-29-2014, 03:55 PM
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#5
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Member
Join Date: Feb 2014
Location: canton, ga
Posts: 69
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You might have something else going on there. My microwave lights up and flashes when inverter is on but never tried to use. Would draw to much juice but the front lights should come on
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12-29-2014, 04:37 PM
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#6
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Senior Member
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 13,599
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Hi TinMan Trvlr,
It could depend on the options that were in the coach from the factory. The standard DSDP has:
1. 4 coach batteries
2. 2000 WATT inverter (16.6 AMPS at peak power)
All electric coach has:
1. 8 coach batteries
2. 2800 WATT inverter (23.3 AMPS at peak power)
There are also several independent option choices that can cloud this issue. Like others have posted, the standard layout, most likely, does not power the micro wave. The all electric option, most likely, does power the micro wave.
The lights and fan run through the same circuit as the oven. They will work when the oven is powered.
If the wife needs the micro, I just turn on the generator.
__________________
Gary
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours
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12-29-2014, 05:35 PM
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#7
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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Tell us the make, model, type (TSW/MSW) and capacity (watts) of your inverter.
Mine is a Xantrex Prosine 2.0, 2,000 watts true sine wave, Runs the microwave nicely provided I have enough battery power.
__________________
Home is where I park it!
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12-29-2014, 06:45 PM
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#8
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 15,749
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I have 2300w inverter, powers the MW just fine. Use it on battery for quick heating at breakfast, etc.
__________________
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.
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12-30-2014, 06:07 AM
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#9
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Registered User
Join Date: Mar 2010
Posts: 8,777
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Quote:
Originally Posted by tomusaf
You might have something else going on there. My microwave lights up and flashes when inverter is on but never tried to use. Would draw to much juice but the front lights should come on
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tomusaf
Like in your Safari, the receptacle for the the GE over-the-range microwave/convection oven in my Safari is inverter powered, (because we have inverters capable of operating a microwave).
If/when a coach builder uses an inverter that is not capable of operating a microwave it's NOT unusual for that receptacle to be powered only when the coach has shore or generator 120VAC power.
Most likely that's whats "going on" with the OPs microwave.
Mel
'96 Safari Sahara
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12-30-2014, 06:20 AM
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#10
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Senior Member
Newmar Owners Club Grand Design Owners Club
Join Date: Apr 2014
Location: Winter-New Port Richey
Posts: 456
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08 Dutch Star w/magnum 2200 Ithink. Might be a 2500. The microwave will work on inverter but it makes a buzzing noise - like it really does not want to be doing this! So, I've decided just not to use it. Might be we have the older MSW type. Maybe the Full Sine Wave would not make the noise?
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12-30-2014, 05:29 PM
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#11
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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MCJ, is your inverter TSW or MSW (If MSW try it on a TSW)
What is the difference.. Well MSW is a stepped waveform, There is a word, Stile, it has 3 meanings that I know of.
One is a character in a series of fiction novels, Citizen Blue, nickname Stile, because back when he was a slave, instead of a citizen he looked at a pile of horse dung (The second meaning of Stile) and diagnosed an illness in one of his master's horses, Thus saving the master much money, also the horse's life, and earning a higher ranking among the slaves.
The remaining meaning is the set of steps that a farmer may use to cross over a fence without needing to open the gate, He can climb up/down but the livestock can not (Pig farmers use this I know, grew up on a half and half farm, I usually give my dad's half (Dairy) credit cause that means I've shoveled tons of Political Promises, but Grandpa was a swinheard).
And that is also the waveform of a MSW inverter, same as those steps.
A true sine wave inverter (Think Flute) is the sweetest sounding waveform there is, it is also the ideal wave form for shore power,, Shore power is rarley as clean as a TSW inverter (though it can be). so anything that works on shore power, and does NOT overload the inverter, should work on the inverter just fine.
__________________
Home is where I park it!
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12-30-2014, 05:52 PM
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#12
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Registered User
Monaco Owners Club
Join Date: Oct 2009
Location: Varies Depending on The Weather
Posts: 8,517
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I will second Gary's post. Many coaches are wired differently so it depends on how yours is wired.
My microwave works off of the inverter BUT I will not use it on inverter power now will I use ANY device that draws a significant amount of amps. I fire up the generator when those devices are needed.
There have been numerous people who have had to replace their microwaves and I will speculate that it could have been from using in on inverter power.
Mine is 13 years old and gets used multiple times everyday and it still works fine.
Dr4Film ----- Richard
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12-30-2014, 07:37 PM
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#13
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Quote:
Originally Posted by mel s
TinMan Trvlr
In many, (most?), RVs the microwave can not be run on battery/inverter power....only with shore or generator power.
Mel
'96 Safari
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Even our "old" 2002 DSDP 2000 watt MSW inverter will run our Advantium microwave/convection oven. The Advantium really doesn't like the MSW wave form but it still runs and works but it does take longer.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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12-31-2014, 06:16 AM
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#14
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Senior Member
Newmar Owners Club
Join Date: Dec 2002
Location: Pasadena, Md.
Posts: 1,117
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Check the Inverter breaker box and make sure the breaker in on for the Micro Wave. If it appears on then reset it.
My MW works fine on the Inverter.
__________________
CC..... Happy Rving!!
2013 Newmar - Canyon Star 3940
2021 Ford Edge ST
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