Johnson Controls Hx 3 S1-THXU430W - Ac; Variable Capacity Control

5407934-UIM-C-1119
54 Johnson Controls Ducted Systems
TABLE 19: AC
Fault (Displayed Text) Description Category
OUTDOOR: HPS LOCK-
OUT
System is in high pressure switch lock-
out
Critical
OUTDOOR: CONTROL
FAILURE
Control failure Critical
OUTDOOR: LPS LOCK-
OUT
System is in low pressure switch lock-
out
Critical
OUTDOOR: LOW VOLT-
AGE(< 16 VAC)
Low voltage (below 16.0 VAC) stopped
current relay outputs
Critical
OUTDOOR: COMPRES-
SOR MISWIRE
Compressor contactor miswire Critical
OUTDOOR: Y2 W/O Y1-
SOFT LOCKOUT
Y2 present without Y1 Efficiency
OUTDOOR: HPS OPEN
W/O COMPRESSOR
HPS is open with no call for compressor Efficiency
OUTDOOR: LOW VOLT-
AGE(< 19 VAC)
Low voltage (below 19.2 VAC) prevent-
ing further relay outputs
Warning
OUTDOOR: AMBIENT
SENSOR SHORTED
Outdoor ambient temperature sensor
failure (shorted)
Warning
OUTDOOR: AMBIENT
SENSOR OPEN
Outdoor ambient temperature sensor
failure (open)
Warning
TABLE 20: Variable Capacity Control
Fault (Displayed Text) Description Category
OUTDOOR: HPS SOFT LOCK-
OUT-NORMAL
High pressure switch lock-
out. The last mode of opera-
tion was normal compressor.
Critical
OUTDOOR: HPS HARD LOCK-
OUT-NORMAL
High pressure switch lock-
out. The last mode of opera-
tion was normal compressor.
Critical
OUTDOOR: HPS SOFT LOCK-
OUT-DEFROST
High pressure switch lock-
out. The last mode of opera-
tion was defrost.
Critical
OUTDOOR: HPS HARD LOCK-
OUT-DEFROST
High pressure switch lock-
out. The last mode of opera-
tion was defrost.
Critical