RV Converter Diagnose, Replace, and Install

Converter diagnose checks

Check	Action	Stop
Reverse fuses	Check the reverse polarity fuses first.	Stop and reconnect the battery if a fuse is blown.
Output voltage	Disconnect battery cables, confirm 105-132 V AC, and measure 13.6 Vdc +/-0.2 at the cables.	Stop if the reading is 0 V.
0 V path	Check the inline fuse, battery wire, ground, and torque.	Stop if the converter fuses and AC are good but output is still 0 V.
Mode cycling	If it cycles between absorption and bulk, suspect a shorted battery cell.	Stop and test the battery.

Check	Action	Stop
Serviceability	Do not open or repair the converter; it has no serviceable parts.	Stop and replace.
Fuse	Use the same type and amp rating for a reverse polarity fuse.	Stop if the rating is unknown.
Breaker	Use the same manufacturer/type and equal or greater interrupting rating, not over 30 A.	Stop if the breaker does not match.
Technician	Use an experienced technician.	Stop if AC/DC work is not qualified.

Check	Requirement	Stop
Technician	Installation must be by an experienced technician.	Stop if not qualified.
Compartment	Do not install in a battery, flammable, or LP compartment; do not block ventilation.	Stop if the location is not ventilated and non-LP.
Breaker	Match manufacturer/type and rating, not over 30 A.	Stop if the breaker does not match.
Polarity	Connect the battery correctly; reverse connection blows the reverse polarity fuses.	Stop if polarity is unknown.
Battery fluid	Check battery fluid monthly.	Stop if the battery is not accessible.