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Old 08-09-2016, 07:22 AM   #15
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Quite a few MH owners, including me, installed the Samsung RF197 fridge because Samsung stated in an FAQ that it would run on an MSW inverter. The RF197 has now been replaced by the RF18 which has an entirely different variable-speed compressor and, to my knowledge, there is no FAQ stating that this unit will run acceptably with an MSW inverter.

Although we did run our RF197 for ~2 years with our Xantrex MSW inverter, we subsequently replaced the inverter with a Magnum MS2800 pure sine wave inverter. The good news is that everything in the RV now works properly with inverter power, even our induction burner which completely refused to operate with the MSW Xantrex.
Docj, had the same problem with our Induction cook top and MSW inverter. I had to install a power switch on the hot line to it. While driving down the road with the inverter on it would be on standby, when we went to use it while hooked up or on generator I had to reset it every time or it would freak out, needless to say it got old!
When my Xantrex MSW 2000 watt dies I will upgrade, for now it works.
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Old 08-09-2016, 08:26 AM   #16
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Quote:
Originally Posted by docj View Post
Quite a few MH owners, including me, installed the Samsung RF197 fridge because Samsung stated in an FAQ that it would run on an MSW inverter. The RF197 has now been replaced by the RF18 which has an entirely different variable-speed compressor and, to my knowledge, there is no FAQ stating that this unit will run acceptably with an MSW inverter.
The Samsung RF18 is the one I called Samsung about and was told would be fine with a MSW inverter. Now, I could've gotten some doofus who didn't know what he was talking about. That's a real possibility nowadays.
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Old 08-09-2016, 09:43 AM   #17
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If I were starting from scratch, I would install a PSW inverter. I you already have a high quality MSW inverter, then it's just a personal decision whether you want to spend the extra $1500-$2000 to upgrade.
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Old 08-11-2016, 07:18 AM   #18
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I agree with Scottyb. You get the best bang for your buck and for the coach and all its sensitive equipment by upgrading to pure sine wave unit. Your frig really does not need its own inverter unless you main unit is undersized for your needs and/or you want to conserve power consumption while disconnected from shore power. To do this with two inverters will require you to always remember to turn the main one off in order to benefit......a real pain in my opinion.


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Old 08-11-2016, 11:10 AM   #19
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I agree with Scottyb. You get the best bang for your buck and for the coach and all its sensitive equipment by upgrading to pure sine wave unit. Your frig really does not need its own inverter unless you main unit is undersized for your needs and/or you want to conserve power consumption while disconnected from shore power. To do this with two inverters will require you to always remember to turn the main one off in order to benefit......a real pain in my opinion.


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I don't agree that a separate dedicated inverter is not necessary. It all depends on what the goal is that you're trying to reach. We had our coach specially built with LP gas heat, hot water and range so we could boondock for up to 2 weeks at a time in Alaska without having to move it. We did have a residential refer installed as we'd chased Norcold problems for 2 years in a previous coach. In addition we have 840W of solar on the roof running through a Morningstar MPPT controller to a bank of Lifeline batteries. When we set up remote, we shut the house inverter off and leave it off. We don't need it. The dedicated takes care of the refer, and up to two additional freezers we may have along. In addition to eliminating the efficiency losses inherent in a very large PSW or MSW house inverter, when we turn off the main inverter we also disconnect all the unknown parasite loads Tiffin has connected that you never see. All coaches have these. Since we're usually in an area where TV is not possible, we do not lose much in entertainment and if we want to watch a movie, we can turn the house inverter on for the task or run the generator if battery power could be driven too low.

As I said, your needs are going to drive what you do to make your system as efficient as you can make it, for how and where you use it. Please do not dismiss a dedicated inverter out of hand.
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