Table 4-4 Controller Function Codes - Carrier PrimeLINE Operation And Service Manual

Code Description
If a function is not applicable or the related option not purchased for the unit, the display will read "-----"
Display Only Functions - Cd01 through Cd26 are display only functions.
Cd01 Capacity Modulation (%)
Cd01 displays the DUV percent closed. The right display reads 100% when the valve is fully closed. The
valve will usually be at 10% on start up of the unit except in very high ambient temperatures.
Cd03 Compressor Motor Current
Cd03 displays the current value passing through the compressor motor leg T3. The current sensor
measures current draw in lines L1 & L2 by all of the high voltage components. It also measures current
draw in compressor motor leg T3.
Cd04 Line Current, Phase A
Cd05 Line Current, Phase B
Cd06 Line Current, Phase C
Cd04, Cd05, Cd06 display the measured of Phase A, B and C in amperes. The current sensor measures
current on two legs. The third unmeasured leg is calculated based on a current algorithm. The current
measured is used for control and diagnostic purposes.
For control processing, the highest of the Phase A and B current values is used for current limiting
purposes. For diagnostic processing, the current draws are used to monitor component energization.
Whenever a heater or a motor is turned ON or OFF, the current draw increase/reduction for that activity
is measured. The current draw is then tested to determine if it falls within the expected range of values
for the component.
Failure of this test will result in a pre-trip failure or a control alarm indication.
Cd07 Main Power Voltage
Cd07 displays the main supply voltage.
Cd08 Main Power Frequency
Cd08 displays the value of the main power frequency in Hertz. The frequency displayed will be halved if
either fuse F1 or F2 is bad (alarm code AL21).
Cd09 Ambient Temperature
Cd09 displays the ambient sensor reading.
Cd10 Compressor Suction Temperature / Evaporator Temperature
Cd10 displays the Evaporator Temperature Sensor (ETS) reading.
Cd11 Compressor Dome Temperature / Discharge Temperature
Cd11 displays the Compressor Discharge Temperature Sensor (CPDS) reading, using compressor dome
temperature, is displayed.
Cd12 Compressor Suction Port Pressure / Evaporator Pressure
Cd12 displays the Evaporator Pressure Transducer (EPT) reading in the left display; Press ENTER at
Cd12 to show reading for compressor suction port pressure in the right display.
Cd14 Compressor Discharge Pressure
Cd14 displays the Compressor Discharges Pressure Transducer (DPT) reading.
Cd15 Digital Unloader Valve
Cd15 displays the status of the Digital Unloader Valve (DUV) as Open or Closed.
Table 4–4 Controller Function Codes
4–5 T-362