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Rev.01 03-27-17
Page 70 of 71
Compu-Aire
High Temperature
Temperature rises above max
setpoint
Room is too hot. Check sensor
and reset alarm after fixing the
problem.
Low Temperature
Temperature drops below min
setpoint
Room is too cold. Check sensor
and reset alarm after fixing the
problem.
High Humidity
Humidity rises above max
setpoint
Too much moisture in the air.
Check and reset the alarm after
fixing the problem.
Low Humidity
Humidity drops below min
setpoint
Room is too dry. Check and
reset the alarm after rectify the
problem.
No Air Flow
Static pressure drop
Check motor, duct work, and
filter. Reset the alarm after
rectifying the problem.
Sensitive switch
Check and recalibrate the
switch if necessary. Consult the
electrical wiring for more detail.
Dirty Filter
Clogged filter
Check and replace filter if
necessary
Sensitive switch
Check the dirty air filter switch
and recalibrate the sensitivity
level if necessary. Consult the
electrical wiring for more detail.
High Pressure
Refrigerant pressure rises above
limit
Check the high head pressure
and reset the alarm after a
manual reset on the pressure
switch.
Low Pressure
Refrigerant pressure drops
below limit
Check for low pressure switch.
Change low pressure bypass
time out and reset the alarm
after rectifying the problem.
Compressors short cycling
Compress ON/OFF too frequent
Check discharge and return air
temperature. Adjust
compressor Max ON if needed.
Heater Overheat
Heater overload
Check if heater is overloading.
Check and reset alarm after
rectifying the problem
Incorrect trigger level
Verify setting under
“Technician->DI Setup->Heater
Overheat” Alarm IF=Closed