Johnson Controls Hx 3 S1-THXU430W - Page 60

5407934-UIM-C-1119
60 Johnson Controls Ducted Systems
OUTDOOR: AMB SENS
OPEN-CL
Outdoor ambient sensor failure in cool-
ing mode (open)
Critical
OUTDOOR: AMB SENS
SHORT-HT
Outdoor ambient sensor failure in heat-
ing mode (shorted)
Critical
OUTDOOR: AMB SENS
SHORT-HT-SFT LO
Outdoor ambient sensor failure in heat-
ing mode (shorted)
Critical
OUTDOOR: AMB SENS
OPEN-HT
Outdoor ambient sensor failure in heat-
ing mode (open)
Critical
OUTDOOR: AMB SENS
OPEN-HT-SFT LO
Outdoor ambient sensor failure in heat-
ing mode (open)
Critical
OUTDOOR: COIL SEN-
SOR SHORT
Coil (liquid line) sensor failure (shorted) Critical
OUTDOOR: COIL SEN-
SOR OPEN
Coil (liquid line) sensor failure (open) Critical
OUTDOOR: DIS LINE
SENS SHORT
Discharge line sensor failure (shorted) Critical
OUTDOOR: DIS LINE
SENS OPEN
Discharge line sensor failure (open) Critical
OUTDOOR: HI DIS-
CHARGE TEMP
High discharge line temperature Critical
OUTDOOR: LO DIS-
CHARGE TEMP
Low discharge line temperature Critical
OUTDOOR: HI DIS TEMP -
SFT LO
High discharge line temperature Critical
OUTDOOR: LO DIS TEMP
- SFT LO
Low discharge line temperature Critical
OUTDOOR: HI DIS TEMP -
HRD LO
High discharge line temperature Critical
OUTDOOR: LO DIS TEMP
- HRD LO
Low discharge line temperature Critical
OUTDOOR: BONNET
SENS SHORT
Bonnet sensor failure (shorted) Critical
OUTDOOR: Y2 W/O Y1-
SOFT LO
Y2 present without Y1 Critical
TABLE 22: 2-Stage AC-HP (Continued)
Fault (Displayed Text) Description Category