Specifications

96
Table 16 — Fault Description and Corrective Actions (cont)
*Fault Type indicates if the fault is: NOTE: VFD Troubleshooting should only be performed by a
Reliance Certified LiquiFlo2 technician.
FAULT
CODE
FAULT TYPE* DESCRIPTION ACTION
FAULT
STATE
203
204
205
Inverter OverCurrent
U, V, W
4 High current was detected in an IGBT. Check parameters in VFD_CONF screen. 246
207 Invtr Gate Kill 4 Inverter gate kill contact is open. 1. Check that condenser high pressure switch is
wired to the VFD gate kill contact.
2. Check that high pressure switch is closed.
2 0 7
235
208
209
210
Rectifier Dsat
R, S, T
4 High current was detected in an IGBT. 1. Press RESET key on ICVC.
2. Contact Carrier Service.
200
211
212
213
Rec tif ier Over Cur
R, S, T
4 Rectifier overcurrent Check parameters in VFD_CONF screen. 241
214 Reactor Temp 4 Temperature switch in reactor opened. Check for proper temperature and fan operation. 255
215 Rctfr HW Unused 4 Rectifier portion of power structure hard-
ware reported unexpected fault
1. Verify connection between rectifier control
board and rectifier power board.
2. If fault persists, replace rectifier power board.
3. If fault still persists, replace rectifier inverter
control board.
206
216 Rectifier Ground Fault 4 Excessive ground current measured. Check for grounded input wiring. 220
217 Rectifier Base Temp 4 Excessive rectifier temperature
measured.
1. Check VFD cooling solenoid, VFD refrigerant
strainer, and VFD isolation valves.
2. Check for proper temperature and flow rate of
coolant.
218
218 Rectifier IGBT Temp 4 Excessive calculated IGBT temperature. 1. Check VFD cooling solenoid, VFD refrigerant
strainer, and VFD isolation valves.
2. Check for proper temperature and flow rate of
coolant.
218
219 Rectifier IT Overload 4 Short-term current rating of rectifier
exceeded.
Low input voltage can result in increased current
load. Provide proper input voltage to the drive.
146
212
220 Rectifier I
2
T Overload 4 Long-term current rating of rectifier
exceeded.
Low input voltage can result in increased current
load. Provide proper input voltage to the drive.
146
212
221 Ride Thru Abort 4 Input power loss timed out. 1. Verify input power and connections.
2. Check Line Sync board, connectors and pins.
3. Check AC Line I/O board, connectors, and
pins.
146
147
212
213
222 High AC Line 4 Input line voltage is too high. Reduce input voltage to meet RATED LINE
VOLTAGE ±10%.
145
211
223 Low DC Bus 4 The bus voltage is too low. 1. Verify proper input voltage.
2. Check control center and input power fuses.
1 4 9
215
224 Rctfr Over Volt 4 The bus voltage is too high. Monitor the AC line for high line voltage or tran-
sient conditions. Extend the decel time.
1 5 0
205
225 Input Amp Imbalance 4 Input phase current imbalance
exceeded limits.
1. Check for loose connection in input power
wiring.
2. Check precharge contactors.
143
209
226
Input Volt Imbalance 4 Input voltage imbalance exceeded limits. 1. Check for problem in input power distribution.
2. Check input wiring connections.
216
227 AC Line Lost 4 Input power Lost 1. Verify proper input voltage.
2. Check line sync board and fuse.
3. Check AC line I/O board.
4. Verify connections between boards.
144
210
228 Line Frequency 4 Line frequency not in the range of
47-63 Hz.
Verify connection between AC Line Sync and AC
Line I/O boards. Confirm that connectors are fully
engaged.
222
229 Rectifier Checksum 4 The checksum read from the board does
not match the checksum calculated.
1. Check all power module connectors and cycle
power to the VFD.
2. Press ICVC RESET key to restore defaults.
3. Check parameters in VFD_CONF screen.
253
230 Invtr HW Unk 4 Inverter section of power structure hard-
ware reported unexpected fault.
1. Verify connection between inverter control
board and inverter power board.
2. If fault persists, replace inverter power board.
3. If fault still persists, replace inverter control
board.
206
1—Auto-resettable
2—Non-resettable
3—User-configurable
4—Normal Fault resettable using Carrier ICVC
“RESET” softkey