Coach Batts overcharging
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11-19-2010, 14:43
Post: #1
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Coach Batts overcharging
I started up the coach last evening and noticed that my house voltmeter was pegged at maximum with the motor running.The chassis voltmeter appears normal.The ammeter is also pegged at 300 amps with the motor on..
This only occurs with the motor running and the auxillary start switch makes no difference when in any position. Where is the auxillary solenoid? Not ever having this issue, I am at a loss. Thanks for any help
Fred & Jeanne Hulse
AZ.
97 WL41
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11-19-2010, 17:12
Post: #2
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Coach Batts overcharging
Fred - Is that a dual alternator setup? If so, it could be a bad regulator on
the house alternator. One type of regulator failure can cause the alternator to run at max continuously. If this is the case, disconnect or pull the belt off the house alternator before running for any length of time. Bob Griesel '84 FC31 WLII WA --- In WanderlodgeForum@yahoogroups.com, "Fred Hulse" > > I started up the coach last evening and noticed that my house voltmeter was pegged at maximum with the motor running.The chassis voltmeter appears normal.The ammeter is also pegged at 300 amps with the motor on.. > This only occurs with the motor running and the auxillary start switch makes no difference when in any position. > Where is the auxillary solenoid? > > Not ever having this issue, I am at a loss. > > Thanks for any help > Fred & Jeanne Hulse > AZ. > 97 WL41 > |
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11-19-2010, 18:56
Post: #3
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Coach Batts overcharging
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11-19-2010, 20:29
Post: #4
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Coach Batts overcharging
Hi Bob
I have only one 300 amp alternator and have tested the regulator with another it's ok
Thanks.
Fred & Jeanne Hulse
Morristown,Arizona 97 WLWB41 |
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11-20-2010, 06:14
Post: #5
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Coach Batts overcharging
Fred - In that case the instruments could be giving you a faulty reading. The
ammeter uses a shunt which could have failed. That might lead to a faulty voltage reading as well. Another possiblity is a relay (solenoid) failure that is causing the charging system to max out, although I would expect that to show up on both house and engine systems. This leads to the controls mentioned in the other reply, so that is a good place to start. In any case check the shunt on that house ammeter so you know the reading is accurate. Good luck with it. Bob Griesel '84 FC31 WLII WA --- In WanderlodgeForum@yahoogroups.com, "Fred Hulse" > > Hi Bob > I have only one 300 amp alternator and have tested the regulator with another it's ok > Thanks. > Fred & Jeanne Hulse > Morristown,Arizona > 97 WLWB41 > |
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11-20-2010, 08:20
Post: #6
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Coach Batts overcharging
Bob
Thanks for the tips.
I was also getting a alarm from my inverter/chargers control panel the the voltage was too high,so we are correct at that.
From all we have eliminated,it seems the charging solenoid is bad and allowing all the power to only one battery bank.I have been checking stuff on the phone with Rick Archie and making comparisons with his 97 Bird this morning.
There isn't much left,I will be able to get to Phoenix Monday and will pick up a solenoid and diode pkg.and also a battery selector switch,which is about to self destruct all by itself.
So for now it's slow down and wait for parts.
Thanks for your help Robert.
Fred
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11-20-2010, 08:29
Post: #7
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Coach Batts overcharging
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11-22-2010, 04:58
Post: #8
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Coach Batts overcharging
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11-22-2010, 05:47
Post: #9
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Coach Batts overcharging
Gary - That is exactly what I would think, but I have a bum shunt that gives bad
readings at the meter and does not pass current reliably. Hard to visually inspect this one and I have not removed it to find out. Possibly there has been physical damage at one of the end terminals. For now it is bypassed. Agree 300% about the meter! Bob Griesel '84 FC31 WLII --- In WanderlodgeForum@yahoogroups.com, GARY MINKER > > The likelyhood of a milled copper and brass shunt failing are near a negative number unless you run 300% current through it and melt the solder joints.Ã The wire crimps, and hardware are more likely problems.Ã If you need to measure DC in a line or branch, get one of these less than $100 DC clamp on ammeters.Ã They tell you the current and the direction of flow.Ã Don't leave home without one. > gary > 85pt40 > > --- On Sat, 11/20/10, freewill2008 > > From: freewill2008 > Subject: [WanderlodgeForum] Re: Coach Batts overcharging > To: WanderlodgeForum@yahoogroups.com > Date: Saturday, November 20, 2010, 1:14 PM > > > > > > > > Ã > > > > > > > > > > Fred - In that case the instruments could be giving you a faulty reading. The ammeter uses a shunt which could have failed. That might lead to a faulty voltage reading as well. > > > > Another possiblity is a relay (solenoid) failure that is causing the charging system to max out, although I would expect that to show up on both house and engine systems. This leads to the controls mentioned in the other reply, so that is a good place to start. In any case check the shunt on that house ammeter so you know the reading is accurate. > > > > Good luck with it. > > > > Bob Griesel '84 FC31 WLII WA > > > > --- In WanderlodgeForum@yahoogroups.com, "Fred Hulse" > > > > > > Hi Bob > > > I have only one 300 amp alternator and have tested the regulator with another it's ok > > > Thanks. > > > Fred & Jeanne Hulse > > > Morristown,Arizona > > > 97 WLWB41 > > > > |
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11-22-2010, 07:00
Post: #10
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Coach Batts overcharging
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