Carrier WeatherExpert 48LC Series Service And Maintenance Instructions page 56

FAULT CODE FAULT NAME IN PANEL
PAR PFA REFNG
1001
PAR PFA IOCNF
1002
PAR AI SCALE
1003
PAR AO SCALE
1004
PAR PCU 2
1005
PAR EXT RO
1006
PAR FBUS
1007
PAR PFA MODE
1008
PAR PCU 1
1009
OVERRIDE/PFA CONFLICT Override mode is enabled and PFA is activated at the same time. This cannot be done because PFA
1010
Table 29 — Fault Codes (cont)
DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION
Parameter values are inconsistent. Check that 2007 MINIMUM FREQ is negative, when 8123 PFA
ENABLE is active.
Parameter values are inconsistent. The number of programmed PFA relays does not match with
Interlock configuration, when 8123 PFA ENABLE is active. Check consistency of RELAY OUTPUT
parameters 1401 through 1403, and 1410 through 1412. Check 8117 NR OF AUX MOTORS, 8118
AUTOCHANGE INTERV, and 8120 INTERLOCKS.
Parameter values are inconsistent. Check that parameter 1301 AI 1 MIN > 1302 AI 1 MAX and that
parameter 1304 AI 2 MIN > 1305 AI 2 MAX.
Parameter values are inconsistent. Check that parameter 1504 AO 1 MIN > 1505 AO 1 MAX and that
parameter 1510 AO 2 MIN > 1511 AO 2 MAX.
Parameter values for power control are inconsistent: Improper motor nominal kVA or motor nominal
power. Check the following parameters:
1.1 < (9906 MOTOR NOM CURR * 9905 MOTOR NOM VOLT * 1.73 / PN) < 2.6
Where: PN = 1000 * 9909 MOTOR NOM POWER (if units are kW) or PN = 746
* 9909 MOTOR NOM POWER (if units are HP, e.g., in US)
Parameter values are inconsistent. Check the extension relay module for connection and 1410
through 1412 RELAY OUTPUTS 4 through 6 have non-zero values.
Parameter values are inconsistent. Check that a parameter is set for field bus control (e.g., 1001 EXT1
COMMANDS = 10 (COMM)), but 9802 COMM PROT SEL = 0.
Parameter values are inconsistent. The 9904 MOTOR CTRL MODE must = 3 (SCALAR SPEED)
when 8123 PFA ENABLE activated.
Parameter values for power control are inconsistent or improper motor nominal frequency or speed.
Check for both of the following:
1 < (60 * 9907 MOTOR NOM FREQ / 9908 MOTOR NOM SPEED < 16
0.8 < 9908 MOTOR NOM SPEED / (120 * 9907 MOTOR NOM FREQ / Motor poles) < 0.992
interlocks cannot be observed in the override mode.
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