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Old 08-07-2012, 11:14 AM   #1
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Monaco Owners Club
Join Date: Aug 2012
Location: GreenRidge, MO.
Posts: 7
Problem Solved

Was having a problem with my coach not receiving power when not on shore power or without generator running. Checked all fuses and did a continuity check on wires going from Aux battery switch relay to the house distribution panel and they all checked ok. Off of house Aux relay there are two wires that run to two Short Stop breakers that are suppose to reset themselves after as a short. They did not reset, probably because of age I am guessing. The breakers checked ok for continuity but would not let 12v pass there them for power coach. This is FYI so that you will know that just because you may have a circuit that checks ok for continuity doesn't mean it will carry a load. Hopefully this will help someone else some grief.

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Old 08-07-2012, 07:17 PM   #2
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Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 21,178
There are two types of self-resetting circuit breakers..

ONE will always test for continuity (if that's all you check) even if it's open, the other won't.

The type that always tests good for continunity you have to REMOVE POWER for a period of time (or else remove all he load) then it will (in theory) reset.

I have one on the bench in pieces as I type this.

Here is why, This is a "hold open, self reset when load/short removed" type. it has a heater coil wrapped around the main bi-metal bar. Normally current flows through the bi-metal bar and the heater only has a small trickle (not enough to heat it) but if excess current flows, the breaker OPENS, now the heater is connected ACROSS the terminals so it's getting the full 12 volts, it gets hot enough to burn my fingers (Well I got off it in time) I have at least two of that type in this rig. ONE runs my air conditioner. That one just got replaced it is the one on the bench.

Try disconnecting the battery for like 20 minutes, Then if that don't work, new breakers.
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