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Old 04-25-2015, 12:35 PM   #1
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Furnace breaker triped

Awoke this morning to a tripped 20 amp breaker that is labeled furnace. This happened as I was making a coffee on my espresso machine that now doesn't work, it no longer heats up however there is power to the electrical outlet it is plugged into.
I have a new Aqua Hot system just recently installed on my 38' 06 Beaver Monterey that I suspected could be the problem. However, the diesel burner is working perfectly as well as all the heat exchangers. The electric furnace on switch has power as it is lit up. Even with the breaker tripped the electric heat seems to work.
The heat pump/AC works. I have found no electrical outlets, lights, or appliances that are not working ether, other than the espresso machine that isn't working. Obviously there is a short somewhere but I don't know where to begin to look.

I did call the installer of the Aqua Hot and described the situation to him. He suggested keeping the electric element to the Aqua Hot turned off. He thought perhaps there is a short in a junction box where the Aqua Hot wiring leads to. I haven't found that yet. I plan to replace the breaker to eliminate that as a cause.

Any thoughts would be appreciated.

Thanks
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Old 04-26-2015, 09:33 AM   #2
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Do you have an EMS or surge protector between your RV and shore power? I wonder if a surge caused your issue. The espresso machine, unless it has electronics always on, shouldn't have been effected buy a surge if it's truly off. Did you turn the breaker off, then on again? Does it stay on? The fact that the switch, which might only be connected to a relay or electronic control, sounds like it's not wired to the 20 amp circuit that tripped. Check the wiring diagram for your furnace installation or ask the tech exactly what that 20 amp CB is wired to. I wouldn't change out the CB yet, best to figure out what it controls and test that.
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Old 04-27-2015, 06:39 AM   #3
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Quote:
Originally Posted by BFlinn181 View Post
Do you have an EMS or surge protector between your RV and shore power? I wonder if a surge caused your issue. The espresso machine, unless it has electronics always on, shouldn't have been effected buy a surge if it's truly off. Did you turn the breaker off, then on again? Does it stay on? The fact that the switch, which might only be connected to a relay or electronic control, sounds like it's not wired to the 20 amp circuit that tripped. Check the wiring diagram for your furnace installation or ask the tech exactly what that 20 amp CB is wired to. I wouldn't change out the CB yet, best to figure out what it controls and test that.
The espresso machine is working fine resolved that issue.
However the CB problem still there. I can not find anything that is not working on the coach even with the breaker switched off. I was going to replace it yesterday but could not find a combo breaker with 15 and 20 amp switches to it. I do believe there is a surge protector on the coach so I will look for that.

Thanks BFlin181 for your input.

Steve
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Old 04-28-2015, 12:55 PM   #4
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Answers to post.

Yes there is a Surge Guard model 40250 on my Beaver.

The furnace CB trips only when I am on 50 amp shore power and when unplugged from shore power it does not trip.

Still have not figured out why or where to go from here.

Thanks for your help.

Steve
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