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Service bulletin CA#9772

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10179120
Published by NHTSA2020-10-23
Manufacturer's numberCA#9772
Manufacturer's date2020-09-01
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

On the 2021 Wonder motorhome the Xantrex inverter electronic breaker is set to 20A and will not charge the coach batteries as efficiently as intended at 30A setting. According to the 2021MY electrical drawings the breaker should have been set at 30A not changed to 20A as in previous 2020MY electrical drawings.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Vehicles listed
TRIPLE E UNITY2021
TRIPLE E RV WONDER2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.