Carrier X-POWER Series - Page 170

R410A DC Inverter Series Carrier service manual
188 Troubleshooting
Attached table 3: Commissioning and operating parameters of refrigerant system
Conditions 1: Make sure outdoor unit can detect all the indoor units, the quantity of indoor units display steadily and be equal
to actual quantity of installed indoor units.
Conditions 2: Make sure all the valves in outdoor unit are open, indoor units EXV have connected to indoor PCB.
Conditions 3: The ratio of connectable indoor units is 100%. When ambient temperature is high, operate the system in
cooling mode and set the temperature 17℃. When ambient temperature is low, operate the system in heating mode and set
the temperature 30℃. Then get the parameters after system running normally more than 30 minutes.
Outdoor unit cooling parameters table
Ambient temperature (T4)
℃
20-27 27-33 33-38 38-45
Discharge pressure (spot check) MPa 2.1-2.3 2.8-3.1 3.3-3.5 3.7-3.9
Pressure of high pressure valve MPa 1.8-2.0 2.4-2.7 2.8-3.0 3.2-3.5
Pressure of low pressure valve MPa 0.7-0.9 0.8-1.0 1.0-1.2 1.2-1.4
Discharge temperature (spot check)
℃
50-65 70-85 70-90 80-90
DC Inverter compressor current (spot check) A 4-5 6-7 7-8 9-11
Fixed compressor current (spot check) A 6-7 8-9 9-11 11-12
Average temperature of evaporator outlet T2B
℃
8-9 12-15 16-17 20
Outdoor unit heating parameters table
Ambient temperature (T4)
℃
-15--5 -5-5 5-12 12-18
Discharge pressure (spot check) MPa 2.0-2.2 2.2-2.7 3.0-3.1 2.6-2.7
Pressure of high pressure valve MPa 1.7-1.8 1.8-2.4 2.6-2.8 2.1-2.4
Pressure of low pressure valve MPa 2.0-2.2 2.2-2.6 3.0-3.1 2.5-2.7
Discharge temperature (spot check)
℃
50-70 60-70 60-85 60-70
DC Inverter compressor current (spot check) A 5 5-6 6-8 5-6
Fixed compressor current (spot check) A 6 6-7 9-10 8-9
Average temperature of condenser outlet T2
℃
33 33-40 46-50 39-41