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6-Compressor Inverter A192
WARNING
Electrical Hazard
High Voltage
Wait 7 Minutes
Electrical components may hold charge.
Do not remove this panel or service this
area for 7 minutes after the power has
been removed.
-
hind the hinged control panel.
The inverter varies the compressor speed (capacity) by
converting an AC input signal to a pulse high voltage DC
output. To initiate cooling operation, the Unit Controller
a MODBUS protocol. Inverter status and diagnostics are
continuously monitored and reported to the Unit Controller
such as:
-Improper Unit Controller input voltage compared to unit
model number
-High input voltage
-Low input voltage
-Imbalanced input voltage
-A communication issue - check MODBUS communication
wire for good connections between the Unit Controller and
the inverter board. See table 2 for inverter-related alarms.
WARNING
Electrical shock hazard. Variable speed compressor
components must be grounded. Failure to follow
these precautions could cause electrical shock
resulting in injury or death.
shock resulting in injury or death.
INVERTER CONTROLS BEHIND THE HINGED CONTROL PANEL
A192
COMPRESSOR
INVERTER
T61
INVERTER POWER
TRANSFORMER
FL1
FILTER BOARD
L43
REACTOR
(not used on J volt units)
INVERTER MODBUS
COMMUNICATION
HARNESS
FIGURE 11
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