Vfd Alarms And Alerts - Carrier AquaForce 30XV140 Controls, Start-Up, Operation, Service And Troubleshooting Instructions

VFD ALARMS AND ALERTS — Alarms and alerts asso-
ciated with the VFD function follow a different naming con-
vention than general unit faults. These alarms and alerts can be
viewed and reset following the procedures outlined in the sec-
tions Current Alarms and Resetting Alarms on page 100.
Table 75 lists the VFD alarm and alert naming conventions,
while Tables 76 and 77 list the Danfoss codes associated with
the alarms and alerts. These represent the most common alarms
and alerts associated with VFD malfunction. Refer to the ap-
propriate Danfoss documentation for more information on oth-
er alarms.
ALARM CODE DESCRIPTION
002 Live zero fault
004 Mains phase loss
007 Overvoltage
008 Undervoltage
009 Inverter overloaded
Motor overtemperature
010
Motor thermistor
011
012 Torque limit exceeded
Overcurrent
013
014 Earth fault
016 Motor short-circuit
017 Serial communication timeout
Internal fan fault
023
025 Brake resistor short-circuited
026 Brake resistor power limit
028 Brake verification
029 VFD temperature too high
030 Motor phase U missing
031 Motor phase V missing
032 Motor phase W missing
Inrush fault
033
034 Fieldbus communication fault
036 Mains failure
038 Internal fault
047 24 V supply low
048 1.8 V supply low
057 AMA timeout
Control board overtemperature
065
067 Option configuration has changed
068 Emergency stop
071 PTC 1 emergency stop
072 Emergency stop
080 Drive initialized to default value
094 End of curve
095 Torque loss
243 IGBT defective
251 New parts detached
LEGEND
AMA — Automatic Motor Adaptation
IGBT — Insulated Gate Bipolar Transistor
PTC — Positive Temperature Coefficient
VFD — Variable Frequency Drive
Table 75 — VFD Alarm/Alert Naming Conventions

VFD ALARMS AND ALERTS

Compressor A
Compressor B
Fan A1
Fan A2
Fan B1
Fan B2
* The Danfoss Alarm/Alert code is represented by nnn. See Tables
76 and 77.
Table 76 — VFD Alarms
Contact Carrier Service
Check the VFD supply voltage and the phase balance (±3%)
Contact Carrier Service
Confirm supply voltage matches VFD nameplate voltage, Contact Carrier Service
Check the VFD output current/compressor current
Check parameter 1-90 and confirm setting is [0], check motor temperature, Contact Car-
rier Service
Check parameter 1-90 and confirm setting is [0], check motor temperature, Contact Car-
rier Service
Check the VFD output current/compressor current, Contact Carrier Service
Check VFD output current/compressor current, Confirm the motor size matches the VFD
nameplate, check parameters 1-20 and 1-25 for correct motor data, Contact Carrier Service
Check if an earth fault exists
Check motor and motor wiring for short-circuit
Check the connections, shielding and termination resistors on the communication wiring
Check for proper fan operation, cycle power to the VFD and confirm that fan operates at
start-up
Contact Carrier Service
Contact Carrier Service
Contact Carrier Service
Ambient temperature too high, VFD ventilation fans not working or obstructed
Check wiring of phase U
Check wiring of phase V
Check wiring of phase W
Current demand too high, too many startup attempts in short period of time, allow VFD to
cool for 20 minutes before attempting another start-up
Check the connections, shielding and termination resistors on the communication wiring
Check the VFD supply voltage, fuses and the phase balance (±3%)
Contact Carrier Service
Contact Carrier Service
Contact Carrier Service
Contact Carrier Service
Check the ambient temperature and the VFD fan for proper operation and fan filters
(where applicable) for clogging
Contact Carrier Service
Contact Carrier Service
Contact Carrier Service
Contact Carrier Service
Contact Carrier Service
Contact Carrier Service
Contact Carrier Service
Contact Carrier Service
Contact Carrier Service
111
ALARM
FORMAT*
17nnn
18nnn
20nnn
21nnn
23nnn
24nnn
ACTION TO BE TAKEN
ALERT
FORMAT*
35nnn
36nnn
38nnn
39nnn
41nnn
42nnn