6
TROUBLESHOOTING
System error message may appear on the thermostat screen.
See Table 4 for a list the possible system error messages and
what they mean.
Table 4 — Thermostat Error Code Descriptions
ERROR
CODE
DESCRIPTION
E1
The system is not communicating properly.
Call your local Carrier representative for service
E3
The temperature sensor has failed.
Call your local Carrier representative for service
E4
There is an internal memory failure.
Call your local Carrier representative for service
E5
The humidity sensor is not working.
Call your local Carrier representative for service
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