Honeywell Home Wi-Fi Series User Manual page 62

Troubleshooting
Error Code
E42
Router is not issuing
an IP address to the
thermostat.
E43
No internet
connection.
Thermostat cannot
communicate to Total
Connect Comfort.
E99
General error
69-2803ES—05
Action
• Wait for 30 minutes, connection can
take several minutes.
• If still no connection, remove
thermostat from wallplate for 10
seconds, then reconnect it (see
page 26).
• Verify your router is correctly setup
to automatically give IP addresses.
• Make sure the Internet cable is
plugged in.
• Reboot the router.
Remove thermostat from wallplate
for 10 seconds, then reconnect it (see
page 26).
60
M33998