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69-2736EFS—05 38
Troubleshooting
M33998
Error Code Action
E42
Router is not issuing
an IP address to the
thermostat.
• 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 6).
• Verify your router is correctly setup to
automatically give IP addresses.
E43
No internet connection.
Thermostat cannot
communicate to Total
Connect Comfort.
• Make sure the Internet cable is plugged
in.
• Reboot the router.
E99
General error Remove thermostat from wallplate for 10
seconds, then reconnect it (
see page 6).