Carrier Comfort zone 2 shows dashes in zone 2

SOURCE: Carrier Comfort Zone ii - trying to find user manual

Your description leads me to believe you have 2 thermostats. How long have you lived in the house? Did it work for you lately? Sometimes its just the door switch. If you have to remove it to change the filter or had it off for another reason hold the switch in by hand and try it. then check the door for correct channeling in the grooves provided and see if this is it.

SOURCE: I get the error code E2 It only shows 2 zones on my 4 zone syst

I reset the circuit breaker to the panel and everything is good now.

SOURCE: carrier Comfort zone 2 is flashing e1 after a storm/power outage

HEY THERE, DID YOU TRY POER CYCLING THE UNIT? TURN IT OFF AT THE BREAKER THEN BACK ON
SETH

SOURCE: Carrier Comfort Zone 2 flashing E2

the e2 error on your thermostat is a problem with the return temp sensor on your system, the only thing you can really do is call a company and replace it, you can't bypass it or remove it cause the system wont run properly

SOURCE: Carrier Comfort Zone 2 Master is flashing E5

Check float switch. E5 is loss of 24 volt power on some models.Russ