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Old 06-30-2020, 05:21 PM   #1
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Question Something Weird Happened, Any Ideas

We recently purchased a 2000 Monaco Dynasty and are in the process of getting it road ready. I installed a 50 amp circuit by the side of the garage so we could have shore power while working on it. Yesterday, plugged into shore power, the front a/c was running and I decided to check the water heater to determine if the propane side was working correctly. I turned on the switch to the water pump and everything stopped. The switch light went out, the a/c quit working, no power in the coach. Checked the circuit breakers, all good. Checked fuses, all good. Checked circuit breakers in the house that feed the 50 amp circuit, all good. After about 10 or 15 minutes everything started working again. Boy am I stumped. Any ideas or suggestions would be appreciated. The coach has a 2000 watt inverter and a 90 watt solar panel on the roof. Also, I changed out the fridge unit for a residential 110 unit. Should the fridge run on power from the inverter when not on shore power or generator power?
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Old 06-30-2020, 05:27 PM   #2
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Since everything turned off and then turned back on, do you have a hardwired surge protector or something similar to a Progressive EMS?

As far as the fridge is concerned, I had 2 circuits for my old Norcold. One was through the inverter for the ice maker. when I changed out to a residential, I put the new fridge on that circuit.
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Old 06-30-2020, 05:27 PM   #3
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Have you looked for a Surge Guard device ?

Could be that your home or neighborhood has low voltage . That will cause the device to shut the RV down.

As far as the fridge, its normal outlet will not be on an inverter circuit, otherwise it wouldn't switch to gas.

You may have a second outlet that was for the ice maker that would be on the inverter circuit. Use a outlet tester to find out.

Pull the shore cord and test them both, if two are there. If not, you will need to do some rewiring.
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Old 06-30-2020, 05:38 PM   #4
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Originally Posted by Notn2bars View Post
... The coach has a 2000 watt inverter and a 90 watt solar panel on the roof. Also, I changed out the fridge unit for a residential 110 unit. Should the fridge run on power from the inverter when not on shore power or generator power?

Not sure what happened with your power outage. As others have suggested, I would look for some type of surge suppression or energy management system.



Residential refrigerators are usually set up to run off of the inverter when not powered from shore power. 2 and 3 way RV refrigerators typically aren't. So, if you replaced a gas/electric refrigerator with a residential refrigerator you would need to rewire the outlet to be on the inverter. You could run it as is from the generator, but that would mean running the generator all the time or at least on a regular basis to keep things cold. This wouldn't be ideal by any means.
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Old 06-30-2020, 06:11 PM   #5
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Something Weird

Thanks to all of you for your help I will look for an EMS or surge protector, not sure it has one or what it will look like, but time to learn. The ice maker circuit was teed into the 110 main 110 plug. Any additional help or suggestions would be greatly appreciated.
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Old 06-30-2020, 06:16 PM   #6
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If I wire the plug to run off the inverter, would it still run off the generator or shore power. I'm very good at making repairs on just about everything, including wiring in the house, but inverter stuff is Greek to me!
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Old 06-30-2020, 06:18 PM   #7
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I agree sounds like a surge guard or EMS system kicked in on low line voltage. Some transfer switches have these features built in.
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Old 06-30-2020, 06:18 PM   #8
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Not sure what you mean by pull shore power and test them both, would you please elaborate.
I think what he is saying is unplug the coach. Turn your inverter on and test both outlets behind the fridge (if you have 2). The one that has power is the one you want.
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Old 06-30-2020, 06:38 PM   #9
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Quote:
Originally Posted by Notn2bars View Post
We recently purchased a 2000 Monaco Dynasty and are in the process of getting it road ready. I installed a 50 amp circuit by the side of the garage so we could have shore power while working on it. Yesterday, plugged into shore power, the front a/c was running and I decided to check the water heater to determine if the propane side was working correctly. I turned on the switch to the water pump and everything stopped. The switch light went out, the a/c quit working, no power in the coach. Checked the circuit breakers, all good. Checked fuses, all good. Checked circuit breakers in the house that feed the 50 amp circuit, all good. After about 10 or 15 minutes everything started working again. Boy am I stumped. Any ideas or suggestions would be appreciated. The coach has a 2000 watt inverter and a 90 watt solar panel on the roof. Also, I changed out the fridge unit for a residential 110 unit. Should the fridge run on power from the inverter when not on shore power or generator power?
Note bold.

My reading of that part indicates a loss of 12v power, not 110 vac. The pump is 12v, the a/c controls are 12v, and itís not clear that your loss of power is 110 vac. You may have a self-resetting 12v circuit breaker that tripped and later reset. Just a guess, based on what was in the OP.
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Old 06-30-2020, 06:40 PM   #10
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If I wire the plug to run off the inverter, would it still run off the generator or shore power. I'm very good at making repairs on just about everything, including wiring in the house, but inverter stuff is Greek to me!
Yes it will. Shore and generator power travel thru the inverter when its available.

When power is not available , the invter takes over, using the batteries to create 120 volt power.
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Old 06-30-2020, 06:57 PM   #11
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I may be wrong about this, hope I am. I will check tomorrow!
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Old 06-30-2020, 10:51 PM   #12
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Originally Posted by Notn2bars View Post
If I wire the plug to run off the inverter, would it still run off the generator or shore power. I'm very good at making repairs on just about everything, including wiring in the house, but inverter stuff is Greek to me!

Most permanently installed inverters are set up to run kind of like an uninterruptible power supply. When the inverter is turned on, if there isn't any shore power, it kicks in and converts 12V from the batteries to 120V AC. When shore power is available, the inverter typically recognizes this and bypasses the inverter providing shore power to the devices being powered.



If your inverter was factory installed, it most likely operates this way. If it was an add on, there are no guarantees.


Do you have any information on what inverter is installed?
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Old 07-01-2020, 06:03 PM   #13
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Tried Circuits as suggested by Windsor Bill and Twinboats

Finally was able to take the time to test the socket in the fridge bay. The socket has 120 volts when plugged in to shore power. When I tested the socket off of shore power it only reads 104 volts. This may be the reason my fridge is showing no AC on the mode readout. The fridge is a norcold 1200 that has been converted to a 120 volt compressor model.
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Old 07-01-2020, 07:02 PM   #14
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Cannot locate any ems or surge protection

I checked all the places I can think of, and cannot locate an EMS or hard wired surge protection. The inverter is a Trace Recreational Series Inverter 2000 watts. In addition there is an ESCO Poweer 50 Transfer. Does anyone know how many volts the inverter should be providing? If it's only putting out 104 volts, is the inverter going out?
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