Error Codes - Honeywell RTH6500WF User Manual

Troubleshooting

Error Codes

For certain problems, the thermostat screen will display
a code that identifies the trouble. Initially, error codes are
displayed alone in the time area of the screen; after a
few minutes, the home screen is displayed and the code
alternates with the time.
Error Code
E01
During Wi-Fi Setup, the router
lost power.
E02
Invalid Wi-Fi password. This
code displays for 30 seconds,
then the thermostat will re-enter
Wi-Fi Setup mode.
Action
• Ensure your router has power.
• If trying to connect to a hidden or manually added network,
confirm the router has power and is working.
• Re-enter password for your home Wi-Fi network.
• Repeat setup process and confirm your password for your home
Wi-Fi network.
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M33999
69-2718ES—01