Emerson 1HDEZ-1521 Thermostat User Manual


 
30
TROUBLESHOOTING
Equipment Control Fault Codes
Number Displayed
in 7 Segment LED
Comfort Alert Fault
P Trip
1
Long Run Time
2
System Pressure Trip
3
Short Cycling
4
Locked Rotor
5
Open Circuit
6
Open Start Circuit
7
Open Run Circuit
8
Welded Contactor
9
Low Voltage
System Communication Codes
E Communication Error
C
For 30 seconds after Communication
established, then blank
Troubleshooting