M52 Microprocessor User's Guide
M52UMCT Oct-03 24
Alarm Response Summary
The following table summarizes the default configuration for all the alarms and their corresponding system action:
Alarm Message
Default Configuration Mandatory System Action
Fan overload
Immediate unit shutdown
Low airflow
Boiler dirty
Humidifier shutdown
Heater overheat
Heater shutdown
Filter dirty
Fire
Immediate unit shutdown
1
Flood
High humidity
High humidity 2
High temperature
High temperature 2
High voltage
Low Humidity
Low humidity 2
Low temperature
Low temperature 2
Low voltage
Fault 1
(Series 9 only)
High refrig. pressure 1
Immediate compressor shutdown
Low refrig. pressure 1
Immediate compressor shutdown
Short cycling 1
Immediate compressor shutdown
High refrig. pressure 2
(Series 9 only)
Immediate compressor shutdown
Low refrig. pressure 2
(Series 9 only)
Immediate compressor shutdown
Short cycling 2
(Series 9 only)
Immediate compressor shutdown
Comp.overload 1
(Series 9 only)
2
Immediate compressor shutdown
Comp.overload 2
(Series 9 only)
2
Immediate compressor shutdown
Note:
1
All units in the same Co-Work network will shut down.
2
On DX units fitted with Specter compressors
ZR90, ZR11, ZR12, ZR16 and ZR19
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