Carrier 48LC Series Controls, Start-Up, Operation And Troubleshooting page 37

VFD section or literature for details on the specific VFD fault.
Verify VFD configurations are set per the latest literature.
Fault F604 – IDF VFD IN HAND
This fault occurs when the indoor fan VFD informs the Sys-
temVu control that it is no longer in auto control and in either
hand or off mode. This can only be done with the accessory
VFD keypad. This will cause a unit shutdown, and will auto-
matically reset when the VFD is placed back into auto mode
for the VFD keypad. Refer to the VFD section or literature for
details on the specific VFD fault. Verify VFD configurations
are set per the latest literature.
Alert A605 – IDF VFD THERMALWARNING
This fault occurs when the indoor fan VFD informs the Sys-
temVu control that it has an active warning. This will cause an
IDF speed reduction of 10%, and will automatically reset when
the VFD alert is cleared. Refer to the VFD section or literature
for details on the specific VFD fault. Verify VFD configura-
tions are set per the latest literature.
Alert A606 – IDF VFD VOLTAGE WARNING
See alert A605.
Alert A607 – IDF VFD CURRENT LIMIT
See alert A605.
Alert A608 – IDF VFD WARNING
See alert A605.
Fault F611 – IDF VFD EARTH FAULT
See fault F601.
Fault F612 – IDF VFD CTLWORD LOSS
See fault F601.
Fault F613 – IDF VFD OVER CURRENT
See fault F601.
Fault F614 – IDF VFD MOTOR OVER TEMP
See fault F601.
Fault F615 – IDF VFD OVERLOAD
See fault F601.
Fault F616 – IDF VFD UNDER VOLTAGE
See fault F601.
Fault F617 – IDF VFD OVER VOLTAGE
See fault F601.
Fault F618 – IDF VFD SHORT CIRCUIT
See fault F601.
Fault F619 – IDF VFD MAIN PHASE LOSS
See fault F601.
Fault F620 – IDF VFD PHASE U LOSS
See fault F601.
Fault F621 – IDF VFD PHASE V LOSS
See fault F601.
Fault F622 – IDF VFD PHASEWLOSS
See fault F601.
Fault F623 – IDF VFD CONTROL VOLTAGE
See fault F601.
Fault F624 – IDF VFD SUPPLY VDD
See fault F601.
Alert A700 – ECON NOT MODULATING
This alert occurs when the economizer feedback is enabled and
the actual speed does reach the commanded speed in the econ-
omizer travel time configuration value. This alert will automat-
ically reset when the actual position does reach the command-
ed position. This is usually caused by installation of the wrong
actuator, no economizer gear motion, or actuator direction con-
trol switch (CCW, CW) wrong. Check damper blades, gears,
and actuator. This alert will usually be accompanied by another
descriptive informational alert.
Alert A701 – ECON STUCK CLOSED
See alert A700.
Alert A702 – ECON STUCK OPEN
See alert A700.
Alert A703 – IDF MECH DISCONNECTED
This alert occurs when the Alert A700 is not active, yet the
control determines that the economizer changes are not align-
ing with the temperature changes. This will require a manual
reset to ensure the economizer is inspected. This is usually
caused by the actuator not properly secured to the damper
shaft.
Alert A710 – ECON NOT COOLING
See alert A700.
Alert A711 – ECON IMPROPER COOLING
See alert A700.
Alert A712 – EXCESSIVE OUTDOOR AIR
See alert A700.
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