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KE2 EvapOEM
Alarm Troubleshooting Guide
Alarms & Notifications List
Alarm Type
Abbreviation
dtS
dtS
dt2
dt2
dt3
dt3
dtH
dtH
dtL
dtL
Hd2
Hd2
KE2 Combo
Ld2
Ld2
Display
Hd3
Hd3
Ld3
Ld3
EA1
EA1
EA2
EA2
EA3
EA3
Pbt
Pbt
Pdt
Pdt
LPCO (Low
Pressure Cut-Out
SCC
SCC
control) Only
LPA
LPA
HSA
HSA
HHA
HHA
KE2 Humidity
Control
LHA
LHA
CHA
CHA
HDA
HDA
LCT
LCT
HCA
HCA
KE2 Evap OEM w/
High Side Control
LCA
LCA
Only
A1A
A1A
A2A
A2A
A3A
A3A
21214V3.0
Scrolling Text*
Full Name
DOOR TEMP SENSOR
Door Temp Sensor Alarm Combo Display Aux 1 Door Temp Sensor is shorted or open.
DISPLAY AUX2 SENSOR Disp Aux2 Sensor Alarm
DISPLAY AUX3 SENSOR Disp Aux3 Sensor Alarm
DOOR TEMP HIGH
High Door Temp Alarm
DOOR TEMP LOW
Low Door Temp Alarm
HIGH MONITOR TEMP2 High Mon2 Temp Alarm
LOW MONITOR TEMP2 Low Mon2 Temp Alarm
HIGH MONITOR TEMP3 High Mon3 Temp Alarm
LOW MONITOR TEMP3 Low Mon3 Temp Alarm
DISPLAY EXTERNAL
Disp Ext1 Alarm
ALARM 1
DISPLAY EXTERNAL
Disp Ext2 Alarm
ALARM 2
DISPLAY EXTERNAL
Disp Ext3 Alarm
ALARM 3
HELP
Panic Button Alarm
PUMPDOWN TIMEOUT Pump Down Timeout
SHORT COMP CYCLE
Short Compressor Cycle
LOW PRESSURE
Low Pressure Alarm
HUMIDITY SENSOR
Humidity Sensor Alarm
HIGH HUMIDITY
High Humidity Alarm
LOW HUMIDITY
Low Humidity Alarm
HUMIDITY COMM
Humidity Comms Alarm
HIGH DISCH TEMP
High Disch Temp
SYSTEM LOCKOUT
Comp Locked Out
HIGHCOND TEMP
High Cond Temp
LOW COND TEMP
Low Cond Temp
AUX1 SENSOR
Dis Aux1 Sensor
AUX2 SENSOR
Dis Aux2 Sensor
AUX3 SENSOR
Dis Aux3 Sensor
Description
Combo Display Aux 2 Temp Sensor is shorted or open.
Combo Display Aux 3 Temp Sensor is shorted of open.
Combo Door Temp above Door Temperature + High Door Alarm
Offset longer than High/Low Door Temperature Alarm Delay.
Combo Door Temp below Door Temperature - Low Door Alarm
Offset longer than High/Low Door Temperature Alarm Delay.
Combo Aux2 Monitor Temp reading above Monitor Temp2 High
Alarm setpoint longer than Monitor Temp2 Alarm Delay.
Combo Aux2 Monitor Temp reading below Monitor Temp2 Low
Alarm setpoint longer than Monitor Temp2 Alarm Delay.
Combo Aux3 Monitor Temp reading above Monitor Temp3 High
Alarm setpoint longer than Monitor Temp3 Alarm Delay.
Combo Aux3 Monitor Temp reading below Monitor Temp3 Low
Alarm setpoint longer than Monitor Temp3 Alarm Delay.
Combo External Alarm 1 input is active.
Combo External Alarm 2 input is active.
Combo External Alarm 3 input is active.
KE2 Combo Display panic button is active.
Low Pressure Cut-out Time exceeded before suction pressure
reached Low Pressure Cut-out.
Compressor started excessive number of times due to high
suctionpressure in off mode, or comp. stopped excessive number
of times due to low suction pressure while in refrigeration mode.
Suction pressure below Low Pressure Cut-out despite attempts
to run.
Humidity sensor is shorted or open.
Humidity reading above Humidity Setpoint + Humidity
Differential + Humidity Alarm Offset for longer than Humidity
Alarm Delay.
Humidity reading below Humidity Setpoint - Humidity
Differential - Humidity Alarm Offset for longer than Humidity
Alarm Delay.
KE2 Evap OEM lost communication with KE2 Humidity Control
board for 10 seconds.
Discharge temp reading above High Dis charge Temp Set point for
longer than High Discharge Temp Delay.
In one hour system cycled off on high discharge temp more times
than Max Num ber of Starts setpoint.
Condenser temp reading is above Cond Temp Setpoint + High
Cond Temp Alarm Offset for longer than High Cond Temp Delay.
Condenser temp reading is less than Cond Temp Setpoint - Low
Cond Temp Alarm Offset for longer than Low Cond Temp Alarm
Delay.
Discharge temp sen sor input is shorted or open.
Discharge temp sen sor input is shorted or open.
Discharge temp sen sor input is shorted or open.
© Copyright 2023 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.1.61 January 2023
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