LED#2 MOTOR THERMAL OVERLOAD
(Glows GREEN in normal operation)
“ON” when thermal overload in motor is closed
and “OFF” when thermal overload is open
circuit.
Note!
If motor does not spin for more than 30
secs, the Thermal O/L LED will turn “OFF”.
DIAGNOSTIC FAULT CODES
Breezair EXH coolers incorporates a Seeley
electronically commutated Direct Drive Motor.
Diagnostic fault codes can be viewed on the
cooler electronics box.
ILL1651-A
LED Indicates
ON Normal Operation
OFF
One or more Hall effects sensors in motor
not detected
Note! To accurately diagnose faults in the
EXH product, we recommend that Service
Technicians use a compatible controller
and a short test lead at the cooler. This
way the functions of the cooler, as well as
the diagnostic LED’s can be immediately
observed in relation to the commands
issued by the controller.
IMPORTANT SAFETY NOTE!
When any side panels are removed, always
test evaporative coolers with the pump
disconnected or in ventilation mode, as wet
roof surfaces can create a safety hazard. Also
care must be taken when working in close
proximity to moving parts.
ILL1853-A
ILL1854-A
LED#1 HALL EFFECT SENSORS
(Glows GREEN in normal operation)
“ON” when all 3 Hall effect sensors are
providing signals to the control board. If any
sensor stops transmitting a signal, the GREEN
LED will go out (indicating a faulty motor).
HALL
EFFECT
THERMAL
O/L
FAN
SPEED
POWER
DIAG
SAL
HALL
EFFECT
THERMAL
O/L
FAN
SPEED
POWER
DIAG
SAL
LED Indicates
ON Normal Operation
OFF
Thermal Overload in motor tripped.
(CAUTION! Motor in overload mode may
re-start without warning.)
BREEZAIR EXH
EVAPORATIVE COOLER cont
LED Indicates
Hall Effect ON = Normal operation.
OFF = One or more Hall effects
sensors in motor not detected.
Thermal O/L ON = Normal Operation.
OFF = Thermal Overload in motor
tripped.
(Caution! Motor in overload may
re-start without warning).
Fan Speed ON = Normal Operation.
OFF or Flashing = Motor is not
rotating within 30% of its set
speed.
Power Mains power is applied to the
motor when the fan ON button of
the Controller has been pressed.
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