FORM 150.66-NM2
ISSUE DATE: 09/25/2020
159
JOHNSON CONTROLS
SECTION 10 - MAINTENANCE
10
TABLE 33 – ISN OPERATIONAL AND FAULT CODES
ISN CONTROL (CON’T)
P56/58
OPERATIONAL CODE
P57/59
FAULT CODE
0
NO ABNORMAl CONDITION
0
NO FAUlT
1
UNIT SWITCh OFF
1
VAC UNDER VOlTAGE
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
hEAT PUMP lOAD lIMITING
18
MP /hPCO
19
lOW EVAPORATOR TEMPERATURE
20
INCORRECT REFRIGERANT PROGRAMMED
21
REQUIRED
POWER FAIlURE, MANUAl RESET
22
UNIT MOTOR CURRENT
23
lOW SUPERhEAT
24
SENSOR FAIl
25
DISChARGE INhIBIT
26
MP/hPCO INhIBIT
27
PUMP TRIP
28
PUMP FAIl MAKE FlOW
Summary of Contents for YCAL0012EC
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