Error T131 is an air filter routine maintenance reminder. The following steps can guide you on how to clean your filter.
Set mode to Electric or OFF.
Remove the air filter and clean by washing with a mild detergent.
Dry air filter and reinstall.
Set unit to the desired mode.
Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.