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LED
flashes
count
Status LED description
Auto
reset
time
Lockout
condition
Status LED troubleshooting information
1
Insufficient oil
pressure
N/A
Insufficient
oil pressure
N/A
Without
sufficient oil
pressure for 2
minutes
If
flashing green
, compressor has been
without sufficient oil pressure for 4 seconds.
If
flashing red
, compressor has been
without sufficient oil pressure for 2 minutes.
2
N/A
Motor
overheat
trip
N/A
2 min
N/A
If
flashing orange
, compressor is turned off
because motor temperature has exceeded
set point.
3
High discharge
temp.
High
discharge
temp.
High
discharge
temp.
2 min
Exceeds max
set point
If
flashing green
, the discharge
temperature probe is open or disconnected.
If
flashing orange
, discharge temperature
has exceeded set point; compressor is
turned off for 2 minutes before auto
resetting.
If
flashing red
, discharge temperature has
exceeded set point and the compressor is
locked out.
DLT alarm is configurable as either Trip or
Lockout. Factory default is Trip alarm. DLT
probe is FACTORY INSTALLED
4
Current sensor
fault
N/A
N/A
N/A
N/A
If
flashing green
, current sensor is
disconnected from the sensor module.
Compressor run state is not known by the
control module.
5
Communication
error
N/A
N/A
N/A
N/A
Communication between control module
and system controller has been lost.
Communication between control module
and sensor module has been lost.
6
N/A
Locked
rotor
Locked
rotor
5 min
10 consecutive
events
If
flashing orange
, compressor failed to
start, and excessive current may be present
in the compressor. The compressor is
turned off and will remain off for 5 minutes.
If
flashing red
, compressor failed to start,
and excessive current may be present in
the compressor. The compressor is locked
out after 10 consecutive
“Trip” alarm events.
7
N/A
Missing
phase
Missing
phase
5 min
10 consecutive
events
If
flashing orange
, compressor is turned off
due to missing phase.
If
flashing red
, the compressor is locked
out after 10 consecutive missing phase trip
alarms.
8
N/A
Low
voltage
Low voltage 5 min
10 consecutive
events
If
flashing orange
, compressor is turned off
due to low compressor voltage.
If
flashing red
,
the compressor is locked
out after 10 consecutive low voltage trip
alarms.
9
N/A
Voltage
imbalance
N/A
5 min
10 consecutive
events
If
flashing orange
, compressor is turned off
due to voltage imbalance.
Table 4
