Modine Manufacturing Airedale ClassMate CMD - Page 27

27
MODINE CONTROLS SYSTEM MANUAL
ClassMate and SchoolMate Models
AIR74-525.1
Unit Alarms (continued)
Alarm
Auto
Reset
Unit
Disabled
Component
Disabled
Cause Action
Supply Fan Status

Supply fan is either faulty or
not connected
All outputs will be locked out except for
supply fan, baseboard heat, hot water
heat and steam heat
Condenser Fan

Condenser fan is either faulty
or not connected
Compressor is held off and alarm is
generated after three tries
Dirty Filter

Main Filters are dirty Alarm is generated - No action taken.
Low coil Temperature

Temperature drops below
setpoint 28˚F (adjustable) on
the indoor coil
Compressor is held off and alarm is
generated after three tries
Coaxial Water out Temperature
Sensor Failure

Coaxial Water Out sensor
faulty or not connected
Alarm is generated
Low Coaxial water out temperature

If Ground Water out
temperature drops below
40˚F (adjustable)
Compressor is held off and alarm is
generated after three attempts
Current Sensor Failure

Current sensor faulty or not
connected
Alarm is Generated
Exhaust Fan

Exhaust Fan faulty or not
connected
Alarm is Generated
High Supply Temperature

Supply Air Temperature
exceeds 120F
One bank of Electric Heat is disabled for
three minutes No alarm is generated.
Supply Air Temperature Shutdown

Supply Air Temperature
exceeds 120F after two
attempts
Alarm is generated and one bank of
electric heat is disabled.
High Supply Temperature

Supply Air Temperature
exceeds 120?F
One bank of Electric Heat is disabled for
three minutes No alarm is generated.
Supply Fan High Maintenance
Run Hours
Run Hours exceed
Maintenance hours
Alarm is Generated
Compressor On Maintenance Run
Hours
Run Hours exceed
Maintenance hours
Alarm is Generated
Compressor CSS Maintenance
Run Hours
Run Hours exceed
Maintenance hours
Alarm is Generated
Exhaust Fan On Maintenance Run
Hours
Run Hours exceed
Maintenance hours
Alarm is Generated
ERM Wheel Maintenance Run
Hours
Run Hours exceed
Maintenance hours
Alarm is Generated
Exhaust Air Vent Fan Maintenance
Run Hours
Run Hours exceed
Maintenance hours
Alarm is Generated
Outside Air Vent Fan Maintenance
Run Hours
Run Hours exceed
Maintenance hours
Alarm is Generated
Door Switch

Panel Door is open Heating and Cooling are locked out
Temperature Adjust Sensor Failure

±3°F Temperature Adjust
sensor is disconnected
No Temperature offset will be applied to
setpoint.
BMS Offline (No Heart Beat)

BMS System is offline or
disconnected
Depending on unit setup, This can turn
the unit off or keep unit in occupied mode.
Faceless Wall Stat Offline

Faceless Wall stat is
Disconnected
Reverts to return air control
Faceless Wall Stat Offline Humidiy
Failure

FW Stat Humidity Sensor is
faulty
Reverts to return air control
Faceless Wall Stat Offline
Temperature Failure

FW Stat Temperature Sensor
is faulty
Reverts to return air control