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Old 07-02-2015, 02:13 AM   #1
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Brand: Thor Motor Coach
Model: Challenger 37KT
State: Manitoba
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THOR #348
Battery isolater module on 2013 Challenger KT

At the front of the engine compartment on the drivers side is a module with fuses and solenoids. The chassis battery and house batteries are connected to this unit. I feel this maybe the battery isolater. It is chattering a lot, it seems the solenoid is kicking in and out rapidly. We are not having any electrical issues inside the coach. It does not do this all day long, but enough to be of concern. I feel it is a problem on the circuit board and not the solenoids themselves. Any similar experiences or thoughts out there?
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Old 07-02-2015, 01:02 PM   #2
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Model: Challenger 37KT
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THOR #348
Here are two pictures of the module in question.
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Old 07-02-2015, 01:21 PM   #3
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THOR #1150
Stand close to it and have someone cycle the Use/Store switch. If you hear the solenoid clicking/clunking when they cycle the switch then you've found it!
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Old 07-03-2015, 12:36 AM   #4
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Brand: Entegra
Model: Entegra Accolade 37TS
State: Virginia
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THOR #1469
Quote:
Originally Posted by Rascal55 View Post
Here are two pictures of the module in question.
It looks as though they may have changed the setup from 2013 to 2015. My 2015 37ND does not have the configuration pictured in the engine compartment but I do have a couple of solenoids and the bus bar in the house battery compartment.

The only noise I hear coming from my compartment is the inverter fan if the inverter is turned on or a solenoid clicking when going from use to store or vice versa.
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Old 07-04-2015, 02:31 PM   #5
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Brand: Thor Motor Coach
Model: Challenger 37KT
State: Manitoba
Posts: 15
THOR #348
Battery Control Module

Thanks for all the replies to my dilemma. There has been no chattering or bad noises coming from this area for the last few days. Could the problem have been a moisture or humidity issue? We have had some heavy rains recently and the fact that the unit is very exposed and unprotected put that thought in my head.
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