Johnson Controls Hx 3 S1-THXU430W - Page 55

5407934-UIM-C-1119
Johnson Controls Ducted Systems 55
OUTDOOR: LOW VOLTAGE
(< 19VAC)
Low voltage (below 19 VAC)
stopped current relay outputs
for > 2 seconds
Critical
OUTDOOR: COMM LOST
INVERTER DRIVE
Inverter control communica-
tions fault
Critical
OUTDOOR: COMM LOST- SYS-
TEM MASTER
RS-485 communications lost Critical
OUTDOOR: AMBIENT SENSOR
SHORTED
Outdoor ambient sensor fail-
ure (shorted)
Critical
OUTDOOR: AMBIENT SENSOR
OPEN
Outdoor ambient sensor fail-
ure (open)
Critical
OUTDOOR: COIL TEMP SENSOR
SHORTED
Coil sensor failure (shorted) Critical
OUTDOOR: COIL TEMP SENSOR
SHORTED-SOFT LOCKOUT
Coil sensor failure (shorted) Critical
OUTDOOR: COIL TEMP SENSOR
OPEN
Coil sensor failure (open) Critical
OUTDOOR: COIL TEMP SENSOR
OPEN-SOFT LOCKOUT
Coil sensor failure (open) Critical
OUTDOOR: LIQUID TEMP SEN-
SOR SHORTED
Liquid line temperature sen-
sor failure (shorted)
Critical
OUTDOOR: LIQUID TEMP SEN-
SOR SHORTED-SOFT LOCKOUT
Liquid line temperature sen-
sor failure (shorted)
Critical
OUTDOOR: LIQUID TEMP SEN-
SOR OPEN
Liquid line temperature sen-
sor failure (open)
Critical
OUTDOOR: LIQUID TEMP SEN-
SOR OPEN-SOFT LOCKOUT
Liquid line temperature sen-
sor failure (open)
Critical
OUTDOOR: DISCHARGE TEMP
SENSOR SHORTED
Discharge temperature sen-
sor failure (shorted)
Critical
OUTDOOR: DISCHARGE TEMP
SENSOR OPEN
Discharge temperature sen-
sor failure (open)
Critical
OUTDOOR: DISCHARGE TEMP
SENSOR OPEN-SOFT LOCKOUT
Discharge temperature sen-
sor failure (open)
Critical
OUTDOOR: SUCTION TEMP SEN-
SOR SHORTED
Suction temperature sensor
failure (shorted)
Critical
TABLE 20: Variable Capacity Control (Continued)
Fault (Displayed Text) Description Category