I've checked the voltages at the batteries with the hi-idle on and the engine batteries were at 14.4 and the house batteries were at 16.2 upon arriving home after a trip (all fully charged). I noticed the problem after my inverter (Heart Interface 2500) started shutting down from an over-voltage condition when we were underway, and the a/c outlets stopped working. I have this same problem with my house batteries overcharging, and my engine battery not whenever the engine rpms are above idle. I would imagine you will see over 14.0 vdc continuously which will boil out the electrolyte in the batteries. Shut off all DC operated appliances and lights, HWH, furnace, fans, etc. They should be between 13.2 vdc and 14.0 vdc(depending of state of battery and type of charger) when fully charged and receiving a maintenance charge. That is the function of the battery charger/converter and vehicle alternator.Ĭheck the coach batteries when charging while plugged in.
It has no voltage regulation characteristics. The two outside terminals are "isolated" from each other so one set of batteries will not send current into the other set of batteries. One outside terminal is connected to the coach batteries the other outside terminal is connected to the engine batteries. The isolator merely directs DC voltage from the alternator connected to the center terminal, to both outside terminals. If the engine batteries are OK and the coach batteries are overcharging when the coach is plugged in, you have a inverter/charger or converter problem, depending on what is installed in your coach. This is the result of a defective alternator regulator. If the coach batteries are overcharging when driving, then the engine batteries will do the same. Overcharged batteries are the result of inverter/charger or alternator regulator issues. Your statement "My coach batteries was overcharging, boiling, fuming." has nothing to do with the isolator. I noticed in Google engine you have posted this question on several boards.
Multi battery isolator kick in voltage series#
Series 23 / 24 alternator Troubleshooting Guide (PDF file) Series 25 Troubleshooting Guide (PDF file) Powerline alternator product output performance POWER SYSTEMS Series 28 product applications (PDF file) POWER SYSTEMS Series 25 product applications POWER SYSTEMS Series 24 product applications Worth, Texas, and the Division Director, Sales Manager and their staff work closely with OEM's and a strong distributor network for widespread product availability throughout the United States, Canada and other countries.ĪLTERNATORS REGULATORS ISOLATORS SPECIALTY APPLICATIONS The manufacturing plant is located in Ft. Hehr Power Systems, a division of Hehr International Inc., manufactures a wide range of electrical products for the automotive, RV, marine, transit, and emergency services industries-including POWERLINE Heavy Duty alternators, Aqualine marine regulators, and POWERLINE multi-battery isolators. When you click on the link I posted above- should be what you are looking for:
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