SERVICING
68
CTK04 ADDENDUM
3. Follow screen for System Status.
TS
Time Stamp (Compressor run time)
MD
Current system operational Mode
(cooling, cooling startup, heating, heating startup, oil
return, defrost, stop)
CRM
Compressor Reduction Mode
RAD
Requested and Actual percentage Demand
(Requested Demand, Actual cooling/heating provided)
RAF
Requested and Reported ID airflow
(Requested CFM, Actual CFM)
ATOF
Outdoor Air Temperature and Outdoor Fan STATUS
DCT
Discharge Temperature, Outdoor Coil Temperature
DLT
Defrost sensor temperature, Outdoor Liquid
Temperature
PSDST
Pressure Sensor and Outdoor Suction Temperature
HEAT PUMP WITH OUTDOOR TEMPERATURE
LOCKOUTS
It is recommended to set the outdoor temperature lock-
outs during the initial thermostat set up. This will enable
the compressor to be turned off and switch heating source
from refrigeration to auxiliary/secondary heating under low
ambient conditions.
Backup heat lockout temperature will enable auxiliary/sec-
ondary heating to be turned on when outdoor temperature
is much higher than indoor temperature, compressor might
stop operating under this circumstance.
Backup Heat Lockout
Temperature
Compressor Lockout
Temperature
(-)
(F°)
OFF
15
In order to access the compressor lockout temperature,
Press
MENU
and scroll down to press
INSTALLER OP-
TIONS
. Enter the date code (password) when prompted.
Choose
VIEW / EDIT CURRENT SETUP
and
COMPRES-
SOR LOCKOUT / BALANCE POINT
will be under
HEAT /
COOL CONTROL OPTIONS
. For more information please
refer to COMFORTNET™ CTK04 Communicating Thermo-
stat SYSTEM INSTALLATION GUIDE.SYSTEM INSTALLA-
TION GUIDE.
RPM
HEAT PUMP