69-2718ES—01 60
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
26).
•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
26).
69-2718ES_A.indd 60 8/13/2012 3:01:51 PM