Isn Operational & Fault Codes - York YCAL0012EC Installation Operation & Maintenance

TABLE 39 – ISN OPERATIONAL AND FAULT CODES
P56/58 OPERATIONAL CODE
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 HEAT PUMP LOAD LIMITING
* The operational and fault codes sent to pages 56 through 59 are defined in Table 39. Note that this table of fault and operational codes is for
all DX products.
JOHNSON CONTROLS
ISN CONTROL (CON'T)
P57/59
10
11
12
13
14
15
16
17
18
19
20
21
REQUIRED
22
23
24
FAULT CODE
0 NO FAULT
1 VAC UNDER VOLTAGE
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
LOW BATTERY WARNING
HIGH OIL TEMPERATURE
HIGH DISCHARGE TEMPERATE
IMPROPER PHASE ROTATION
LOW MOTOR CURRENT /MP / HPCO
MOTOR CURRENT UNBALANCED
LOW DIFFERENTIAL OIL PRESSURE
GROUND FAULT
MP /HPCO
LOW EVAPORATOR TEMPERATURE
INCORRECT REFRIGERANT
PROGRAMMED
POWER FAILURE, MANUAL RESET
UNIT MOTOR CURRENT
LOW SUPERHEAT
SENSOR FAIL
FORM 150.66-NM2 (906)
10
153