R3250Hz Universal Outdoor Series Technical Manual
GD Chigo Heating & Ventilation Equipment Co., Ltd.
Spot check table
Fr Running frequency
FT Target frequency
T1 Unit A T1
T2 Unit A T2
Sr IDU A fan speed
Tb IDU A T2B
AL IDU A EXV opening degree
An Capacity demand of IDU A
Hn Amended total capacity demand
b1 Unit B T1
b2 Unit B T2
bb Unit B T2B
bS Unit B fan speed
bL Unit B EXV opening degree
bn Capacity demand of IDU B
TH Suction temperature
T3 Outdoor unit pipe temperature
T4 Ambient temperature
TP Discharge temperature
T6 IPM board temperature
od Mode
dT Outdoor load target state
CC Quantity of IDU
Ud DC voltage
dL Current
Pr Outdoor unit fan speed
Lr Master EXV opening degree
Notice:
For single phase units, an additional maintenance controller is needed to show error codes and do
spot check.
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