Good Sam Club Open Roads Forum: Fifth-Wheels: 2017 montana
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devildog1971

Rome

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Posted: 07/05/19 08:00pm Link  |  Quote  |  Print  |  Notify Moderator

I had to park the fifth wheel almost a year, everything was dead plugged into 50 amp plug the fridge worked it is a compressor model put a battery charger on batteries all the 12 volt stuff worked. I know this is either simple or the converter charger is bad. it does have a separate inverter for the fridge when going down the road. it is a HM 381 TH model all the breakers are good and I could not find a bad fuse the battery switch is in the on position. What am I missing?


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Carl n Susan

Carmichael, CA

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Posted: 07/05/19 08:13pm Link  |  Quote  |  Print  |  Notify Moderator

The most common causes:
1. The disconnect switch in the convenience center is in the wrong position. The labeling is confusing at best. The key is if you can remove the red key, the battery is disconnected.

2. The batteries were disconnected and/or replaced and wired backwards (even if for just a second or two). This blows the protection fuses in the converter. Replace the four fuses and things are good (assuming the battery is connected correctly)

3. The 50 Amp circuit breaker has failed completely. You can jumper it to verify.

If none of the above apply, get out the voltmeter and follow the voltage from the converter to the battery (or vice versa). Plugged into shore power you should see +/- 13.4 volts all the way down the path.

BB_TX

McKinney, Texas

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Posted: 07/06/19 09:27am Link  |  Quote  |  Print  |  Notify Moderator

Not clear from your wording (honestly due to lack of punctuation), but sounds like it sat for a year without being plugged in. And when you plugged it in your 12 volt stuff was not working. There are some devices that always draw 12 volt power and will drain a battery over time if not connected to shore power. Likely your battery was drained completely.

Did the 12 volt stuff work after you pulled the charger back off? Or only while you had the charger on? You may just have a bad battery that will not hold a charge. I would pull the battery and take it in and have it checked.

devildog1971

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Posted: 07/06/19 08:04pm Link  |  Quote  |  Print  |  Notify Moderator

the 5th wheel was plugged into a 50 amp box. it was plugged in continuously, it even had a surge protector inline.

* This post was edited 07/07/19 08:27am by an administrator/moderator *

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