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Old 05-20-2013, 03:31 AM   #1
cdat
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Default Heart inverter, link monitor problem or maybe battery

Went to Portland Or last week, great trip, coach ran great going and coming back, over the Blues, up and down cabbage hill, no problem, no overheating.
After parking in an RV park, we went to visit our daughter, came back later that evening, noticed the inverter was extremely hot, the link 2000 was flashing "low bat" in the left corner and there was an "E" in the right side, not flashing just steady. Would not allow me to make changes to the Link, finally turned off the inverter as I was scared it was going to catch fire it was so hot. Apparently the grounds crew was spraying bark around and had partially disconnected our power supply. The next morning I changed to a different box, and turned the inverter back on. It did not overheat, but the link kept flashing low bat along with the steady E. Did the same thing all the way thru the trip regardless of the park we were at.
Yes, I do need to check the batteries, I know they have fluid in them, but not sure if they are any good. How do I test the inverter and link to make sure it's not causing a problem before I put new batteries in if the batteries are in fact bad?
I did check the manual for the link, shows various codes for problems, but nothing for a solid "E". Any help or ideas on where to start would be appreciated as I'm not particularly competent when it comes to electronics.

thanks
John
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Old 05-20-2013, 03:42 PM   #2
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Hi John,

the Flashing E "over-temp" fault code is probably accurate, with the inverter/charger automatically protecting itself against damage from overheating. Finding the proper location for the inverter/charger involves a compromise. To provide cooling to minimize or preclude E-3 shutdown incidents during hot weather operation, the inverter/charger could be located in an air conditioned space within the interior of the coach. However, this is "prime real estate." In addition, the inverter/charger often makes some noise, buzzing as it charges or inverts. Newell has chosen to locate the inverter/charger in an exterior storage compartment, realizing that this may occasionally result in an overtemp shutdown. However, Newell believes that few owners would want this component installed inside the coach. One issue to check: make sure that miscellaneous items are not packed too tightly around the inverter/charger. The unit needs to freely ventilate.
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Old 05-20-2013, 03:53 PM   #3
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John it sounds like you guys had a great trip other than the inverter problem. Portland, Oregon is gorgeous during this time of year. In the manual it will tell you about the E over temp error and it will say to turn it off and let it cool down. So you made the right choice in turning it off. One of your boards are probably bad and will need to be replaced. For the low bat issue, if you know the batteries are good you can try resetting/reprogramming. Also check the wiring connection, you can even try removing the fuse for 30 seconds and re-install and see if the low bat disappears. Hope this helps.
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Old 05-20-2013, 04:07 PM   #4
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If one of your boards are bad you'll want to way out the cost and decide what decision is best for you either replacing it or upgrading and getting a new inverter. Good Luck!
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Old 05-20-2013, 04:43 PM   #5
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I had a similar problem in the past, someone suggested that I add a small fan and point it at the unit that comes on with the generator fan. P.S. Next time you're in the area let me know if I'm home we can make plans to go for coffee.
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Old 05-20-2013, 06:19 PM   #6
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Thanks for the info, will pull the fuse and see if that resets everything. Overheating is probably what the cause is from what most of you said. The inverter is in an interior closet, surrounded by a cabinet, which my wife stuffed with towels and such. Will remove the cabinet to generate more air movement and probably add a fan as stewart said.
Stewart, will let you know, we are thinking of moving to the Portland area, so will be making several trips.
John
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Old 05-20-2013, 10:54 PM   #7
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John, you may want to consider letting the inverter reset itself. This is done by disconnection the battery cables for awhile and the inverter should reset. It is not sufficient to merely use the disconnect switch since the inverter us usually cabled around the disconnect.
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Old 05-20-2013, 11:39 PM   #8
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Old 05-21-2013, 02:39 AM   #9
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I wouldn't mind upgrading, but was hoping to wait until winter
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Old 05-22-2013, 12:25 AM   #10
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Disconnected batteries and inverter reset itself, thanks for the advice. The batteries show 8.8 and 10.2, so I'm going to have to replace them. Thinking 4 golf cart batteries, any problem with the inverter recognizing them?

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Old 05-22-2013, 12:33 AM   #11
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John,

Because of the repeated heavy discharge & charging cycles, Golf cart batteries make an excellent choice because they are designed for daily heavy discharge and charging. However, be advised that golf cart batteries are 6 volts and you'll need two wired in series to produce 12 volts; This simply means connecting the positive terminal of one battery to the negative of the second battery. The remaining negative and positive terminals provide you with 12 volts.

Alternatively, you could use 12 volt deep cycle batteries, but their capacity will be roughly half that of a pair of golf cart batteries and you'd need two 12 volt deep cycle batteries to provide the equivalent capacity. The net result is that you'd need the same total number of batteries.

If you have space, four or even six golf batteries would provide additional capacity, allowing the inverter to run for a longer time before battery recharging is necessary. If you use 6 volt golf cart batteries, connect them in series-connected pairs, then connect the "free" positive terminals together and the "free" negative terminals together to produce 12 volts. If you use 12 volt batteries, merely connect all the positive terminals together and connect all the negative terminals together.

One pair of 6 volt golf cart batteries wired as above will have a rated capacity of approximately 220 amp-hours. Since you shouldn't discharge the batteries by more than 50% before recharging, the usable capacity of this pair of batteries will be 110 amp-hours. Four golf cart batteries wired as above will give you a usable capacity of 2 x 110 = 220 amp-hours. We'll use this usable capacity in the next section to determine how long you can run the inverter before having to recharge the batteries.

Do not mix battery types. Because of different charging and discharging characterstics, it's important to use the same battery type for all batteries in the bank. Do not mix lead-acid, gel cell and AGM batteries. You should not mix deep cycle batteries with "combination" or "marine" batteries, nor should you mix 12 volt deep cycle batteries with pairs of 6 volt golf cart batteries.
Take your list of 120 volt appliances, power consumption in watts and estimate of operating hours and calculate the amp-hours of capacity drawn from the batteries in a 24 hour period from the formula:

Amp-hours = (watts x hours)/11 (allowing for efficiency)

Sean
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Old 05-22-2013, 01:36 AM   #12
cdat
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Join Date: Dec 2012
Location: Idaho
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My plan had been to use 4 golf cart batteries, wired in series to create essentially 2 12 v batteries. If the chassis batteries are in a separate bank, on the other side of the that shouldn't cause a problem, correct?
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