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Old 10-06-2024, 12:41 PM   #1
Bman
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Converter breaker Tripping

Have had issues with the converter breaker tripping. Have had it to dealer and they say that they did not find any issues with converter. Last time it tripped both AC units were running, ceiling lights and TV. After resetting breaker voltage was 12V, then picked up to 13.7V. Afraid to keep food in the fridge. Left the camper for the week and returned and fridge was not running and all the food had thawed and was bad. Any suggestion on what may be causing this issue?
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Old 10-06-2024, 12:46 PM   #2
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There is a finite probability that the breaker has aged or otherwise gone bad. It's a "shotgun fix" tactic, but breakers are cheap and easy to replace. The voltage behavior you report is just what you should be seeing from a good converter.
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Old 10-06-2024, 12:57 PM   #3
flybouy
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More info would help. Year, make, full model of trailer. Plugged into a 50 Amp pedestal? Do you have an EMS.?
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Old 10-06-2024, 03:30 PM   #4
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Breaker

The unit is a 2023 316RLS Cougar. Still under warranty.
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Old 10-06-2024, 03:53 PM   #5
NH_Bulldog
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The converter only produces DC power, so it has nothing to do with the TV, air conditioners or anything that runs on 120v AC.

If you have two AC’s you have a 50A camper. Are you plugged into a 50A power source? Do you have an EMS/EPO (electrical management system)? Are both AC’s factory installed? What type of batteries do you have and how many?
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Old 10-06-2024, 07:43 PM   #6
Bman
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Breaker

Connected to 50A service. Batteriese factory installed. lithium batteries. The breaker tripping has gone on for at least 9 months now and has tripped 5 times in 9 months. The unit also has solar panels factory installed. TV stayed on but lost signal. AC shut down due to incommand lost power when breaker tripped.
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Old 10-06-2024, 09:32 PM   #7
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Have to ask: the converter has a setting to charge lithium batteries correctly, I hope?
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Old 10-07-2024, 07:55 AM   #8
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Quote:
Originally Posted by Bman View Post
Connected to 50A service. Batteriese factory installed. lithium batteries. The breaker tripping has gone on for at least 9 months now and has tripped 5 times in 9 months. The unit also has solar panels factory installed. TV stayed on but lost signal. AC shut down due to incommand lost power when breaker tripped.
With InCommand and KeyTV, those devices require 12VDC to operate. BOTH will shut down if the battery AND/OR the converter are no longer providing 12VDC power to the trailer electrical systems.

It sounds like either there is a connection/corrosion issue with the 120VAC wiring on that converter circuit breaker/wiring connections to the converter unit or a bad breaker. You say they replaced the converter, but did not mention whether they inspected the actual power distribution 120VAC wiring, connections and circuit breakers. It's possible that your trailer may have been shipped from the factory with a defective circuit breaker and it's still being used for the converter. It's possible that there might be a loose connection on either the neutral wire for that circuit or on the "hot wire" where it's screwed to the circuit breaker. It's possible that there's a loose connector where the converter plugs into the power distribution system or, if your specific converter is "hard wired to the power distribution system, that one of those screws is loose....

Unfortunately, many "service techs" find a problem (or don't find a problem and change out the major assembly), things work so they stop looking for a second malfunction which, in a few weeks, causes the new major assembly to fail just like the original major assembly failed....

I'd start by unplugging your trailer from shore power, turn off the 12VDC system at the batteries and then spend half an hour or so, on your belly, behind your trailer power distribution center. Use a good flash light, look for brown stains/burn marks on EVERY wire. Check EVERY screw with a wire under it for tightness (and check every wire "stripped end" for pitting, signs of being overheated/melted insulation) and actually put a screwdriver on EVERY screw you see to make doubly sure they are ALL tight.

Inspect the converter circuit breaker by pulling it out of its connectors, disconnecting the wire connections, inspect under the connections for any signs of being overheated and check the black wire connected to the circuit breaker for signs of melted insulation/hot copper wire.

Then, I'd replace the circuit breaker with a new one. If you don't have a new circuit breaker, then swap it out with one of the other circuit breakers in the power center. MAKE NOTE OF WHICH BREAKER YOU SWAP and if the problem moves to that circuit, you've confirmed the problem....

My guess is that if you're on a 50 amp power supply from the campground, and that one circuit breaker is the only one causing problems, there's a "resistance in the wires" being caused by something, probably in a connection under a screw or a bad breaker.
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Old 10-14-2024, 06:53 AM   #9
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We purchased a new 2023 Fuzion 428. The .ain't GFI was tripping daily. Only thing hooked up was the residential Frig. Which run on converter when shore power is not use. Finally after 5 or 6 trips to service I convinced them it was not a defective GFI . They kept telling me they couldn't find anything wrong. They finally found a broken wire on the back of the GFI when replacing it. Wiring issue not GFI problem.
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Old 10-14-2024, 07:33 AM   #10
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Quote:
Originally Posted by Pearce369 View Post
We purchased a new 2023 Fuzion 428. The .ain't GFI was tripping daily. Only thing hooked up was the residential Frig. Which run on converter when shore power is not use. Finally after 5 or 6 trips to service I convinced them it was not a defective GFI . They kept telling me they couldn't find anything wrong. They finally found a broken wire on the back of the GFI when replacing it. Wiring issue not GFI problem.
Welcome to the forum...

Just for future clarity, the statement in red should say, "... residential Frig. Which run on INVERTER when shore power is not used..." The converter changes 120VAC to 12VDC to charge the batteries and run the 12 volt trailer systems. The inverter changes 12VDC to 120VAC to run the 120 volt "shore power things" when unplugged from shore power and operating on the battery.

That said, it's good that they "finally" checked the wiring and found a broken wire on the GFI.
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Old 10-16-2024, 03:37 PM   #11
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Thanks for the correction I do know the difference but miss quoted the issue
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