Table 54 – isn operational and fault codes – York YCAL0080SC User Manual
Page 111
YORK INTERNATIONAL
111
FORM 150.62-NM1
TABLE 54 – ISN OPERATIONAL AND FAULT CODES
P56/58
OPERATIONAL CODE
P57/59
FAULT CODE
0
NO ABNORMAL CONDITION
0
NO FAULT
1
UNIT SWITCH OFF
1
VAC UNDERVOLTAGE
2
SYSTEM SWITCH OFF
2
LOW AMBIENT TEMPERATURE
3
LOCK-OUT
3
HIGH AMBIENT TEMPERATURE
4
UNIT FAULT
4
LOW LEAVING CHILLED LIQUID TEMP
5
SYSTEM FAULT
5
HIGH DISCHARGE PRESSURE
6
REMOTE SHUTDOWN
6
HIGH DIFFERENTIAL OIL PRESSURE
7
DAILY SCHEDULE SHUTDOWN
7
LOW SUCTION PRESSURE
8
NO RUN PERMISSIVE
8
HIGH MOTOR CURRENT
9
NO COOL LOAD
9
LLSV NOT ON
10
ANTI-COINCIDENCE TIMER ACTIVE
10
LOW BATTERY WARNING
11
ANTI-RECYCLE TIMER ACTIVE
11
HIGH OIL TEMPERATURE
12
MANUAL OVERRIDE
12
HIGH DISCHARGE TEMPERATE
13
SUCTION LIMITING
13
IMPROPER PHASE ROTATION
14
DISCHARGE LIMITING
14
LOW MOTOR CURRENT /MP / HPCO
15
CURRENT LIMITING
15
MOTOR CURRENT UNBALANCED
16
LOAD LIMITING
16
LOW DIFFERENTIAL OIL PRESSURE
17
COMPRESSOR(S) RUNNING
17
GROUND FAULT
18
18
MP /HPCO
19
19
LOW EVAPORATOR TEMPERATURE
20
20
INCORRECT REFRIGERANT
PROGRAMMED
21
21
POWER FAILURE, MANUAL RESET
REQUIRED
22
22
I/O BOARD FAILURE
23
23
OIL TEMP INHIBIT (LOW OIL TEMP)
3