Batteries not charging {Resolved}

Inverters don't charge batteries. They discharge them.

Converters charge batteries.

Actually, that model is an INVERTER/CHARGER, so it should charge the batteries when it receives a source of 120 VAC from shore power or generator.

Does the "pass through" feature work (do outlets powered by the inverter work when the inverter is turned off? This would confirm that 120 VAC is getting to the inverter/charger.

When the inverter is turned on, the light on the panel blinks. One you tube video I checked indicated it was in "Service watts" mode. I reset as per instructions and light still blinks. Sorry, I don't know what Pass through outlets you are referring to.

https://www.manualslib.com/products/Heart-Interface-20d-381532.html


download the manuals if you do not have and follow step by step to setup. Post back with results

What you should do is put your meter on the output of the converter right on the screw terminals. Should show 13.6. If you then put the meter onto your battery terminals and it is less than that while you are connected to power, it's very likely that either the positive or the negative feed to the battery has a loose connection. I was plugged in for three days and my batteries went dead. I found the loose connection on the negative main wire feed to the batteries on the terminal strip at the converter. A quick check is to locate those two heavy wires, and wiggle them while someone looks at your lights. If they suddenly go bright, you have found the bad connection.

A "Pass through" is any 120 VAC outlet that can be powered by the inverter (i.e. you have 120 VAC even without shore power or generator).

Galley, microwave and TV are common choices.

The "Pass through" is when there is an external source of 120 VAC (shore power or generator) the inverter does not "invert" which takes power from the batteries, Instead, it just "passes through" that 120 VAC and also automatically start charging the batteries.

Reading your inverter/charger's owners manual will help.

Well.....I was kinda right. HIS inverter doesn't charge batteries.

ArchHoagland wrote:
Well.....I was kinda right. HIS inverter doesn't charge batteries.

You are correct, HIS doesn't charge the batteries. But, it's supposed to, THAT is the reason for his post. :B....Dennis

Not worried about semantics. Likely there is a reset button on the "device".

Horsedoc wrote:
Not worried about semantics. Likely there is a reset button on the "device".

No, there is no reset button. The OLD Heart Freedom series, failure of the charge board module was common. Amazing it has lasted 20 years. You can replace the charge board, but I doubt anybody has a replacement part on the old Heart Inverter. After 20 years, it would be much better to replace the Inverter/Charger. BUT, that means replacing the Inverter/Charger AND the remote panel and running a new communication wire from the Inverter to the remote. The original remote control cable is not compatible with the new Xantrex Inverters. Xantrex is the company formed 15 years ago with the merger of Heart and Trace. On the OLD Heart Freedom series, they also had a problem internally with the module boards(there are 3) pin connections that connect the boards together. Hopefully this is his problem. You remove the Heart from the RV and remove the outer case and look at the small wire ties that hold the 3 module boards securely. You push the module board connections together and install new strong small wire ties to make the module boards stay connected. Then connect 120 power and battery and see if the charge system powers up. Doug