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Table 9 — Automatic Reset Alarm List
ALARM NAME
(ALARM STATUS SCREEN)
CONDITION/MODE DESCRIPTION
Compressor #1 Alarm Alarm/C1 Alarm Compressor #1 shut down; CC1-CS shows “Off” but Y1 is “On”.
High Pressure Switch #1 Alarm Alarm/HPS1 Alarm HPS1 switch open; head pressure high in Comp. #1 circuit.
Low Pressure Switch #1 Alarm Alarm/LPS1 Alarm LPS1 switch open; refrigerant pressure low in Comp. #1 circuit
Freeze Protection #1 Alarm Alarm/FP1 Alarm DX LAT #1/SLT #1 below the lower freeze set point.
Compressor #2 Alarm Alarm/C2 Alarm Compressor #2 shut down; CC2-CS shows “Off” but Y2 is “On”.
High Pressure Switch #2 Alarm Alarm/HPS2 Alarm HPS1 switch open; head pressure high in Comp. #2 circuit.
Low Pressure Switch #2 Alarm Alarm/LPS2 Alarm LPS1 switch open; refrigerant pressure low in Comp. #2 circuit
Freeze Protection #2 Alarm Alarm/FP2 Alarm DX LAT #2/SLT #2 below the lower freeze set point.
BAS Comm. Lost Alarm None Communication with the BAS has been lost.
Clogged Filter Alarm Alarm/Clgd Fltr Clogged filter needs to be changed.
Condensate Overflow Switch Alarm Alarm/COS Alarm Condensate overflow switch is open.
Emergency Shutdown Alarm Alarm/Emer Shtdn Emergency Shutdown switch (N.C.) is open. Resets when closed.
Freeze Stat Alarm Alarm/FZT Alarm Water line freeze stat (N.C.) is open.
Water Flow Switch Alarm Alarm/WFS Alarm Water flow switch is open.
Heat Failure Alarm/Heat Fail SAT below Heat Fail set point of 50°F after 10 minutes.
High SAT Alarm Alarm/High SAT
SAT above High SAT Limit set point of 120°F for electric heat or 130°F for
gas heat.
Smoke Detector Alarm Shutdown/SD Stop
Unit shutdown due to Smoke Detector (N.C.) alarm. Resets when Smoke
Detector is reset.
DXLAT #1 Sensor Failure Alarm/Sensr Fail DX LAT #1 sensor value of -60.2°F or 296°F.
DXLAT #2 Sensor Failure Alarm/Sensr Fail DX LAT #2 sensor value of -60.2°F or 296°F.
ECAT Sensor Failure Alarm/Sensr Fail ECAT sensor value of -60.2°F or 296°F.
EC-RH Sensor Failure Alarm/Sensr Fail EC-RH sensor value of less than 1% or greater than 100%.
MAT Sensor Failure Alarm/Sensr Fail MAT sensor value of -60.2°F or 296°F.
MA-RH Sensor Failure Alarm/Sensr Fail MA-RH sensor value of less than 1% or greater than 100%.
OAT Sensor Failure Alarm/Sensr Fail OAT sensor value of -60.2°F or 296°F.
OA-RH Sensor Failure Alarm/Sensr Fail OA-RH sensor value of less than 1% or greater than 100%.
RAT Sensor Failure Alarm/Sensr Fail RAT sensor value of -60.2°F or 296°F.
RA-RH Sensor Failure Alarm/Sensr Fail RA-RH sensor value of less than 1% or greater than 100%.
SAT Sensor Failure Alarm/Sensr Fail Unit shutdown due to SAT sensor value of -60.2°F or 296°F.
SA-RH Sensor Failure Alarm/Sensr Fail S A-RH sensor value of less than 1% or greater than 100%.
SLT #1 Sensor Failure Alarm/Sensr Fail SLT #1 sensor value of -60.2°F or 296°F.
SLT #2 Sensor Failure Alarm/Sensr Fail SLT #2 sensor value of -60.2°F or 296°F.
WExAT Sensor Failure Alarm/Sensr Fail WExAT sensor value of -60.2°F or 296°F.
WEx-RH Sensor Failure Alarm/Sensr Fail WEx-RH sensor value of less than 1% or greater than 100%.
ZAT Sensor Failure Alarm/Sensr Fail Temperature communication fails from the ZS sensor.
Z-RH Sensor Failure Alarm/Sensr Fail Humidity communication fails from the ZS sensor.
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