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IOM 1210-1 • MAGNITUDE
®
MODEL WMC CHILLERS 44 www.DaikinApplied.com
Possible Alarms and Events
There are three types of alarms: faults, problems, and warnings. In addition to these three alarms, there are also "events." See
the following tables for examples of faults, problems, warnings, and events that can occur. Separate tables are shown based on
whether the alarm source is the unit or the compressor.
NOTE: In the "Alarm Reset" column of the following tables, itallics indicate special alarm conditions or severity. If the "Alarm
Reset" says "Auto-clears," it indicates that the alarm will auto-clear after the condition is resolved and the normal
condition returns.
Fault Alarms
Equipment protection faults cause rapid compressor shutdown. The compressor is stopped immediately (if the compressor was
running).
Table 12: Unit Fault Alarms
Description OITS Alarm Message Alarm Reset
Low Motor Current Comp 1 COMPR STOP - Motor Current Low Auto-clears
Low Motor Current Comp 2 COMPR STOP - Motor Current Low Auto-clears
No Condenser Water Flow COMPR STOP - Condenser Water Flow Loss Auto-clears
No Compressor Stop Comp 1 COMPR STOP - Current High with Compr OFF Auto-clears
No Compressor Stop Comp 2 COMPR STOP - Current High with Compr OFF Auto-clears
No Evaporator Water Flow COMPR STOP - Evaporator Water Flow Loss Auto-clears
Low Evaporator Pressure Circuit 1 COMPR STOP - Evaporator Pressure Low Auto-clears
Low Evaporator Pressure Circuit 2 COMPR STOP - Evaporator Pressure Low Auto-clears
Leaving Evaporator Water Temperature Sensor Fault Comp 1 COMPR STOP - Evap LWT Sensor Out of Range Auto-clears
Surge High Suct SH-Running Comp 1 COMPR STOP - Surge Temperature Auto-clears
Surge High Suct SH-Running Comp 2 COMPR STOP - Surge Temperature Auto-clears
Expansion Alarm – FAULT (external alarm) COMPR STOP - Control Fault (External Input) Auto-clears
Check Valve Fault 1 CHILLER STOP - Check Valve Failure Locked off (requires local reset)
Check Valve Fault 2 CHILLER STOP - Check Valve Failure Locked off (requires local reset)
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