When you turn the inverter on at the inverter it renders the remote display power button non-operational. 

Reset Inverter to clear Error 20

1. Disconnect from shore power.
   
2. Trip the 200 or 300a breaker on the inverter to remove 12v power
   
1. Located under the driver side access panel. See Picture A below
3. Reset the breaker after about 30 seconds
   
4. Turn the inverter on at the main panel.
   
1. Located under the driver side access panel. See Picture B below.
5. Press & hold the battery button and scroll through the software and ensure software version U3 01 06 
   
1. Located on the side of the inverter under the driver side access panel. See Picture C below.
6. Turn the inverter off at the main panel.
   
7. Turn the inverter on at the remote display.
   
1. Located on the upper shell next to the pantry (E2) or the rear cabinet (E1). See Picture D below. 
8. Press & hold the battery button and scroll through the software and ensure software version U3 01 06
   

If U3 01 06 software is displayed on both the inverter & remote display then they are up-to-date & properly communicating. Please be aware that if 12v power is cut off to the inverter either on purpose or accident that the inverter must be first powered up at the main display before turning it on at the remote display.

If your inverter does not have the latest software, please see the attached software file as well as the instructions on how to update the inverter. Please check the Xantrex website periodically for new software updates: Xantrex.com