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Issue
Impeller/fan not
Imbalance in
running smoothly
rotating parts
Motor not
Mechanical
turning
Line voltage faulty
Broken motor winding Replace motor.
Inadequate cooling
High ambient
temperature
Impermissible
operating point
(e.g., back pressure
LED Warning/Status Codes
The LED shows the blower/fan motor status with
various colors and flash codes and is visible through a
small window on the terminal cover of the blower/fan
assembly.
Green: No warning of fault.
# of
Motor Status
Pulses
Phase Failure/Line
1
Under Voltage
Inverter Output
3
Overheating
4
Communication Error
6
Motor Overheating
7
Hall Sensor Fault
8
Motor Locked
9
Speed Limit Exceeded
Rotor Position Sensor
11
Calibration Error
13
DC-Link Under Voltage
Blower/Condenser Fan Troubleshooting
Possible
Cause
Clean the device (make sure weight clips are not removed during cleaning);
replace if imbalance persists after cleaning.
Switch off unit, isolate from power supply and remove blockage.
blockage
Check line voltage, restore power supply. WARNING: Line Voltage error resets
automatically and motor will start without warning.
Faulty
Switch off, isolate from power supply and correct connection. See connection
connection
table on page 58.
Allow motor to cool down, clean or improve cooling.
Allow motor to cool down.
Correct static issue, allow motor to cool down.
too high)
Blower/Condenser Fan Motor Flash Codes
Manual Reset
Possible Cause
Required
Missing phase/poor line
No
voltage quality
Dirty electronics
Yes
External power supplied
No
to V out for setting
parameters (internal error)
Yes
Yes
No
Mechanical blockage
No
Rotor position sensor
No
needs calibration
No
Line voltage incorrect
TABLE 18
Possible Remedy
Orange: Warning. Device is operating out of range but
no user action is required.
Red (flashing): There is at least one fault. Flash codes
are displayed as on/off pulse at 2Hz. Each code is
followed by a 3-second pause. Multiple flash codes will
be displayed in succession.
TABLE 19
Check line voltage.
Clean inverter housing/improve cooling.
housing
Remove power to unit. Wait. Switch power back on.
-
Internal error
Remove power to unit. Wait. Switch power back on.
Remove power. Verify rotor is free to turn. Re-apply
power and verify operation.
-
Replace and return to manufacturer.
Check applied line voltage to motor.
Possible Remedy
-
-
Manual
2100-749
Page
59 of 68
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Table of Contents
Troubleshooting
