Carrier AquaSnap 30RAP011-060 Controls, Start-Up, Operation, Service, And Troubleshooting page 71

FAULT CODE
AF
CF
cF
CL
ER
GF
HF
JF
LC
LF
OF
PF
SF
SP
F1
F2-F9, Fo
Drive display = 60.0 even though it
is cold outside and it should be
running slower
Drive display = "---" even though
drive should be running
Drive display = 8.0 even though
fan should be running faster
VFD flashes 57 and LCS
LEGEND
EPM — Electronic Programming Module
LCS — Lost Control Signal
OEM
— Original Equipment Manufacturer
VFD — Variable Frequency Drive
GENERAL OPERATION
The speed varies in proportion to a 0 to 10 vdc signal produced by
the ComfortLink controls. The MMV output speed is displayed in
Hz.
The ComfortLink controls must be configured for MMV opera-
tion in order for it to operate. This is configured under the Config-
uration menu (Configuration  MM  MMR.S) and selecting
"1=LOW AMBIENT." This configuration menu also contains the
gains and minimum speed for the Motormaster control logic.
Table 40 — Fault Codes
DESCRIPTION
High Temperature Fault: Ambient temperature is too high;
Cooling fan has failed (if equipped).
Control Fault: A blank EPM, or an EPM with corrupted data
has been installed.
Incompatibility Fault: An EPM with an incompatible param-
eter version has been installed.
CURRENT LIMIT: The output current has exceeded the
CURRENT LIMIT setting (Parameter 25) and the drive is
reducing the output frequency to reduce the output current.
If the drive remains in CURRENT LIMIT too long, it can trip
into a CURRENT OVERLOAD fault (PF).
ERROR: Invalid data has been entered or an invalid com-
mand was attempted.
Data Fault: User data and OEM defaults in the EPM are
corrupted.
High DC Bus Voltage Fault: Line voltage is too high; Decel-
eration rate is too fast; Overhauling load.
Serial Fault: The watchdog timer has timed out, indicating
that the serial link has been lost.
FAULT LOCKOUT: The drive has failed three restart
attempts and requires a manual reset.
Low DC Bus Voltage Fault: Line voltage is too low.
Output Transistor Fault: Phase to phase or phase to ground
short circuit on the output; Failed output transistor; Boost
settings are too high; Acceleration rate is too fast.
Current Overload Fault: VFD is undersized for the applica-
tion; Mechanical problem with the driven equipment.
Single-phase Fault: Single-phase input power has been
applied to a three-phase drive.
START PENDING: "SP" blinks during the interval between
restart attempts.
EPM Fault: The EPM is missing or damaged.
Internal Faults: The control board has sensed a problem.
Feedback signal is above set point.
Start jumper is missing.
Feedback signal is below set point and fan is at minimum
speed.
Feedback or speed signal lost. Drive will operate at 57 Hz
until reset or loss of start command. Resetting requires
cycling start command (or power).
Check cooling fan operation
Perform a factory reset using Parameter 48 —
PROGRAM SELECTION.
Either remove the EPM or perform a factory
reset (Parameter 48) to change the parameter
version of the EPM to match the parameter
version of the drive.
Check for loose electrical connections.
Check for faulty condenser fan motor.
Check Parameter P25 from Table 41 is set
correctly.
Restore factory defaults P48, see section
above. If that does not work, replace EPM.
Check line voltage — set P01 appropriately.
Check serial connection (computer).
Check settings for P15.
Check settings in communication software to
match P15.
Check line voltage — set P01 appropriately.
Reduce boost or increase acceleration val-
ues. If unsuccessful, replace drive.
Check line voltage — set P01 appropriately.
Check for dirty coils.
Check for motor bearing failure.
Check input power phasing.
Consult factory.
Check for proper set point.
Check liquid line pressure.
Replace start jumper. See section above.
Check for proper set point.
Check liquid line pressure.
In stand alone mode: Check transducer wiring
and feedback voltage. Feedback voltage dis-
played on P-69. Pin 6 should be 5 v output.
Pin 5 (feedback) should be somewhere
between 0 and 5 v.
CONFIGURATION
The MMV is configured for 1 of 12 operation modes based on the
inputs to the control terminal block. The 30RAP units use operat-
ing modes 5-8. In these configurations, the MMV follows a 4 to
20 mA speed reference signal present on terminals 25 (+) and 2
(-). The Aux board generates a 2 to 10 vdc signal that is converted
to a 4 to 20 mA signal by means of a 240  1/4 w resistor in series
with the positive (+) signal wire. One additional jumper is re-
quired to configure the drive for 50/60 Hz operation and input
voltage. See Table 41 for proper inputs. Once the drive is pow-
ered, it will change to the mode selected according to the inputs.
See Fig. 59.
71
SOLUTION