| Re: Yandina combiner cycles [message #328337 is a reply to message #328332] |
Wed, 17 January 2018 10:02   |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
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I saw that with another coach with a Yandina combiner installed. You hit on the problem exactly. The owner installed a new Yandina a few weeks later and it did the same thing.
When the PD drops to maintenance mode the output voltage drops to 13.2 to 13.3. Unfortunately that is also the switching point for the Yandina so it drops in and out. Neither the PD or the Yandina are adjustable so you are stuck. The reason for the delay is when the PD drops down there is a surface charge left on one or both of the batteries. It takes a while for it to bleed off and stabilize at the new 13.2 voltage. There is also a switching delay built into the Yandina.
If you want to spend more money, you might try a different brand of combiner to see if it switches at a different voltage.
Since you already have the combiner installed, install the manual switch to it and leave it turned on when you need want it combined. Make the switch one with an internal LED and it will remind you to turn it off when not needed. Those switches are $5.00 at Auto Zone.
There is really no reason to combine to the engine battery while parked as there is nothing to drain it unless you leave the car radio or front cockpit lights turned on. If you are going to long term park the coach for months then a $1.00 combiner might be used. It is my contention that combining and charging an already fully charged engine battery while camping for days or weeks is simply over charging it and shortens it life. My group 24 engine battery is in it's 10 year and still going strong.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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