5284792-UIM-A-0317
Johnson Controls Unitary Products
17
INVERTER DRIVE TROUBLE SHOOTING
INVERTER DRIVE LED
There are three control chips on the drive board and all of them have
their own LED status display as detailed below. The location of each
LED can be found in Figures 11-13.
Operation Indicating LED (Green - 1 or 605) -
When the drive is in
normal or standby state with no protection or fault condition the LED will
flash at 0.5 sec ON / 0.5 sec OFF. If the compressor is running the LED
will be solid.
Protection Indicating LED (Yellow - 2 or 604) -
When the drive is
under protection, the yellow LED will flash. Refer to the fault status and
troubleshooting section of this bulletin for more information.
Hardware Fault Indicating LED (Red - 3 or 603) -
When the drive is
under hardware fault, the red LED will flash. Refer to the fault status
and
troubleshooting section of this bulletin for more information.
LED for Drive Control (Green - 4 or 602) -
When the drive is in normal
state, whether the compressor is running or standby, the LED will flash
at 1 sec ON / 1 sec OFF. When the drive is under protection or hard-
ware fault, the LED will flash at 8 sec ON/ 8 sec OFF.
LED for Power Factor Correction (Green-601) -
When the drive PFC
is not in operation, the LED will blink at 1 sec ON / 1 sec OFF. When the
PFC is in operation, the LED will be solid.
ELECTRICAL SHOCK HAZARD
• Disconnect and lock out power before servicing.
• Wait 2 minutes to ensure that drive capacitors are discharged before servicing.
• Use compressor with grounded system only.
• Molded electrical plug must be used for connection to compressor.
BURN HAZARD
• Failure to follow these warnings could result in serious personal injury or property damage.
• Ensure that materials and wiring do not touch high temperature areas of the compressor.
• Personal safety equipment must be used.
RCD PROTECTION
• Be sure to install a Residual Current protective Device (RCD) in accordance with the applicable
legislation. Failure to do so may cause electric shock or fire.
• Be sure to use a dedicated power circuit, never use a power supply shared by another appliance.
• When installing the RCD be sure that it is compatible with the inverter (resistant to high fre-
quency electric noise and to higher harmonics) to avoid unnecessary opening of the RCD.
The RCD must be a high speed type breaker of 30 mA (<0.1 seconds).
DRIVE HANDLING
• Caution must be used when lifting and installing the drive. Failure to use caution may result in
bodily injury.
• Personal safety equipment must be used.
• Failure to follow these warnings could result in personal injury or property damage.
Safety Statements
• Only qualified and authorized HVAC or refrigeration personnel are permitted to install, commission and maintain this equipment.
• Electrical connections must be made by qualified electrical personnel.
• All valid standards and codes for installing, servicing, and maintaining electrical and refrigeration equipment must be observed.
WARNING
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WARNING
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WARNING
!
CAUTION
!
