Quick basic troubleshooting:
Obtain an inexpensive digital voltmeter and check the voltage on the output of the Univolt with shore power on. it should be 12-14 volts DC. If not, check the following
Verify the battery leads are not shorted together or to the trailer chassis--that will absolutely stop everything 12 volt
Verify the Univolt is getting 110 volt AC power at the breaker and at its input side.
If there is power into the Univolt, and nothing is coming out, and there are no 12V
shorts or blown fuses, its time for a Univolt replacement with a better Convertor.
Consider temporarily installing a charged 12V
battery as a test. Be careful hooking it up with the right polarity.
Search other threads for replacement data and more troubleshooting information...
Look for 'Convertor replacement" as an example.
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