This is the instructions in our Progressive Dynamics converter manual on checking for a failed converter:
Do not replace the converter section unless the following checks have been performed:
1. Use an AC voltmeter to check for the proper voltage at the 120 VAC breaker that the converter is connected to. This
voltage should be between 105 and 130 volts.
2. Remove the reverse battery fuses and check the converter output from the CONVERTER GND to the CONVERTER POS
terminals on the DC board. This should be 13.6 VDC.
3. Check the Reverse Battery fuses . These fuses will only blow if the battery or DC output leads were connected in reverse,
even for a moment. If they are blown check the polarity of the battery connections before replacing them.
4. If the Converter output is not present and there is AC to the converter , the converter is defective.
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Bob & Becky
2012 3402 Montana
2012 Chevy 2500HD D/A CC
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