Carrier SUPRA 950Mt - Thermostatic Expansion Valve Service

13 62-11491
MANUAL DEFROST
1. Press the MANUAL DEFROST key to initiate a defrost.
The defrost mode may be initiated in three different ways if the evaporator
coil is below 45°F (7.2°C):
1. Defrost is initiated automatically at preset intervals by the defrost
timer in the microprocessor.
2. Defrost is initiated by the defrost air switch.
3. Defrost may be manually initiated by pressing the MANUAL
DEFROST key.
The defrost mode terminates when the evaporator temperature is higher
than 55°F (12.8°C). Should the defrost cycle not complete within 45
minutes, the defrost cycle is terminated automatically by the
microprocessor.
After the 45 minute termination, the controller will wait 1.5 hours before
attempting another defrost cycle. Pressing the MANUAL DEFROST key
will override this mode and start a defrost cycle. If a shutdown alarm
occurs, defrost will be terminated.
BOX TEMPERATURE
AUTO START/STOP
I
UNIT DATA
PRETRIP
ALARM/FAULT
STANDBYBUZZER OFF
MAN
DEFROST
CITY
SPEED
ROAD
FUNCTION
ENTER
SETPOINT
O
i
dF
COMPARTMENT 1 COMPARTMENT 2 COMPARTMENT 3
OIOIOI
1