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TABLE 51 – ISN OPERATIONAL AND FAULT CODES
P56/58
0
NO ABNORMAL CONDITION
1
UNIT SWITCH OFF
2
SYSTEM SWITCH OFF
3
LOCK-OUT
4
UNIT FAULT
5
SYSTEM FAULT
6
REMOTE SHUTDOWN
7
DAILY SCHEDULE SHUTDOWN
8
NO RUN PERMISSIVE
9
NO COOL LOAD
10
ANTI-COINCIDENCE TIMER ACTIVE
11
ANTI-RECYCLE TIMER ACTIVE
12
MANUAL OVERRIDE
13
SUCTION LIMITING
14
DISCHARGE LIMITING
15
CURRENT LIMITING
16
LOAD LIMITING
17
COMPRESSOR(S) RUNNING
18
19
20
21
22
23
YORK INTERNATIONAL
OPERATIONAL CODE
P57/59
FAULT CODE
0
NO FAULT
1
VAC UNDERVOLTAGE
2
LOW AMBIENT TEMPERATURE
3
HIGH AMBIENT TEMPERATURE
4
LOW LEAVING CHILLED LIQUID TEMP
5
HIGH DISCHARGE PRESSURE
6
HIGH DIFFERENTIAL OIL PRESSURE
7
LOW SUCTION PRESSURE
8
HIGH MOTOR CURRENT
9
LLSV NOT ON
10
LOW BATTERY WARNING
11
HIGH OIL TEMPERATURE
12
HIGH DISCHARGE TEMPERATUE
13
IMPROPER PHASE ROTATION
14
LOW MOTOR CURRENT /MP / HPCO
15
MOTOR CURRENT UNBALANCED
16
LOW DIFFERENCIAL OIL PRESSURE
17
GROUND FAULT
18
MP /HPCO
19
LOW EVAPORATOR TEMPERATURE
INCORRECT REFRIGERANT
20
PROGRAMMED
POWER FAILURE, MANUAL RESET
21
REQUIRED
22
I/O BOARD FAILURE
23
OIL TEMP INHIBIT (LOW OIL TEMP)
FORM 150.62-NM2
3
105
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