24
7.5.2 - Variator sub-code alarms
No. Alarm/alert 
level
 Action taken
Variator sub-code alarms
2 Alarm Error at function "Live Zero" Contact Carrier Service
4 Alarm Phase loss detection Check the VFD supply voltage and the phase balance (±3%)
7 Alarm Overvoltage detected Contact Carrier Service
8 Alarm Undervoltage detected Contact Carrier Service
9 Alarm Inverter overload Check the VFD output current/compressor current
10 Alarm Motor overheated Check the motor temperature
11 Alarm Motor overheat thermistor defective Contact Carrier Service
12 Critical alarm Torque limit exceeded Check the VFD output current/compressor current
13 Critical alarm Overcurrent detected Check the VFD output current/compressor current
14 Critical alarm Poor earthing Check if an earth fault exists
16 Critical alarm Motor short-circuit detected Check if there is a short-circuit at the VFD terminals
17 Alarm Communication loss with the frequency converter Check the connections and the shielding of the serial communication cable
23** Alarm Internal fan operating problem Check the internal fan rotation
25 Alarm Brake resistor short-circuited Contact Carrier Service
26 Alarm Capacity dissipated by the brake resistor too high Contact Carrier Service
28 Alarm Brake verication Contact Carrier Service
29 Critical alarm VFD temperature too high Space temperature too high or VFD ventilation obstructed or damaged
30 Critical alarm Motor phase U missing Check wiring of phase U
31 Critical alarm Motor phase V missing Check wiring of phase V
32 Critical alarm Motor phase W missing Check wiring of phase W
33 Alarm Current demand too high Let the VFD cool down for 20 minutes before starting it
34 Alarm Problem on the site communication bus Check the connections and the shielding of the serial communication cable
36 Alarm Supply voltage problem Check the VFD supply voltage and the phase balance (±3%)
38 Critical alarm Internal frequency variator problem Contact Carrier Service
47 Alarm 24 V supply too low Contact Carrier Service
48 Alarm 1.8 V supply too low Contact Carrier Service
57*** Alarm No response from AMA Contact Carrier Service
65 Alarm Control board overheated Check the space temperature and the VFD fan
67 Critical alarm Option conguration modications Contact Carrier Service
68 Alarm Numerical input 37 - emergency stop activated Contact Carrier Service
71 Alarm Emergency stop at thermistor PTC1 Contact Carrier Service
72 Critical alarm Emergency stop Contact Carrier Service
80 Alarm Frequency variator reset to default values Contact Carrier Service
94 Alarm Curve end Contact Carrier Service
95 Alarm Torque loss Contact Carrier Service
243 Alarm IGBT defective Contact Carrier Service
251† Critical alarm New parts detached Contact Carrier Service
301 Alarm Problem in set 1 of the conguration parameters Check the communication bus connections and the software version
302 Alarm Problem in set 2 of the conguration parameters Check the communication bus connections and the software version
303 Alarm Problem in set 3 of the conguration parameters Check the communication bus connections and the software version
Variator sub-code alerts (WY-XXX*)
1 Alert 10 V supply to low Contact Carrier Service
2 Alert Error at function "Live Zero" Contact Carrier Service
3 Alert No motor Check the motor connections
4 Alert Phase loss detection Check the VFD supply voltage and the phase balance (±3%)
5 Alert Intermediate voltage too high Check the VFD supply voltage and the phase balance (±3%)
6 Alert Intermediate voltage too high Check the VFD supply voltage and the phase balance (±3%)
7 Alert Intermediate voltage too high Contact Carrier Service
8 Alert Intermediate voltage too high Contact Carrier Service
9 Alert Inverter overload Check the VFD output current/compressor current
10 Alert Motor overheated Check the motor temperature
11 Alert Motor overheat thermistor defective Contact Carrier Service
12 Alert Torque limit exceeded Check the VFD output current/compressor current
13 Alert Overcurrent detected Check the VFD output current/compressor current
14 Alert Poor earthing Check if an earth fault exists
17 Alert Motor short-circuit detected Check the connections and the shielding of the serial communication cable
23** Alert Communication loss with the frequency converter Check the internal fan rotation
25 Alert Brake resistor short-circuited Contact Carrier Service
26 Alert Capacity dissipated by the brake resistor too high Contact Carrier Service
28 Alert Brake verication Contact Carrier Service
34 Alert Problem on the site communication bus Check the connections and the shielding of the serial communication cable
36 Alert Supply voltage problem Check the VFD supply voltage and the phase balance (±3%)
47 Alert 24 V supply too low Contact Carrier Service
49 Alert Motor speed limit exceeded Contact Carrier Service
59 Alert Current limit exceeded Check the VFD output current/compressor current
62 Alert Frequency at the maximum limit Check the VFD output current/compressor current
64 Alert Voltage limit Supply voltage too low
65 Alert Control board overheated Check the space temperature and the VFD fan
66 Alert Internal frequency variator temperature too low Space temperature too low
*
  Y = 0: circuit A; Y=1: circuit B; XXX = sub-code
**  Error 24 and 104 possible
***  Error 50 to 58 possible
†  Error 250 or 70 possible
††  Not applicable for variator size 102