Service priority alarms - Johnson Controls - LIT-12011950 - Building automation software - Smart Equipment Controller - 5.0

Smart Equipment Controls Sequence of Operation Technical Bulletin

Product name
Smart Equipment Controller
Document type
Technical Bulletin
Document number
LIT-12011950
Version
5.0
Revision date
2024-06-06
Product status
Active
Table 1. Service priority alarms
Alarm Reason for activation
Evaporator Coil Temp 1 Sensor Failure Input unreliable and Number of Cooling Stages >= 1
Condenser Coil Temp 1 Sensor Failure Input unreliable and Number of Cooling Stages >= 1
Evaporator Coil Temp 2 Sensor Failure Input unreliable and Number of Cooling Stages >= 2
Condenser Coil Temp 2 Sensor Failure Input unreliable and Number of Cooling Stages >= 2
Evaporator Coil Temp 3 Sensor Failure Input unreliable and Number of Cooling Stages >= 3
Condenser Coil Temp 3 Sensor Failure Input unreliable and Number of Cooling Stages >= 3
Evaporator Coil Temp 4 Sensor Failure Input unreliable and Number of Cooling Stages >= 4
Condenser Coil Temp 4 Sensor Failure Input unreliable and Number of Cooling Stages >= 4
Building Pressure Sensor Failure Input unreliable
Outdoor Air Temperature Sensor Failure Input unreliable
Return Air Temperature Sensor Failure Input unreliable and Variable Speed Fan
Supply Air Temperature Sensor Failure Input Unreliable AND (Econ Comm Status = Online OR Mixed Air Sequencer = DAT Control)
Unit Shutdown Due to Supply Fan Overload FAN OVR Trip (but less than three in one hour as that would cause 'Unit Locked Out Due to Supply Fan OL')
Main Controller Calibration Error Missing Cal Data
FDDM Controller Calibration Error Missing Cal Data
Econ Controller Calibration Error Missing Cal Data
4-Stage Controller Calibration Error Missing Cal Data
Unit Shutdown Due to Air Proving Switch Cmd but no proof for >= 90 seconds. If this happens less than three in 1.5 hours; otherwise that would cause 'Unit Locked Out Due to APS')
FDDS Controller Calibration Error Missing Cal Data
Firmware versions do not match package Firmware versions between two or more of the controllers do not match
C1 Shutdown - Exceeded Op Env Limits C1 was operating outside the envelope
C1 Shutdown - High Discharge Pressure Discharge Line Pressure 1 surpassed above 600 psi
C1 Shutdown - Low Suction Pressure Suction Pressure 1 descended below 80 psi
C2 Shutdown - High Discharge Pressure Discharge Line Pressure 2 surpassed above 600 psi
C2 Shutdown - Low Suction Pressure Suction Pressure 2 descended below 80 psi
C3 Shutdown - High Discharge Pressure Discharge Line Pressure 2 surpassed above 600 psi
C3 Shutdown - Low Suction Pressure Suction Pressure 2 descended below 80 psi
C4 Shutdown - High Discharge Pressure Discharge Line Pressure 1 surpassed above 600 psi
C4 Shutdown - Low Suction Pressure Suction Pressure 1 descended below 80 psi