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© 2011 Emerson Climate Technologies
Printed in the U.S.A.
AE8-1385
Application Engineering
BULLETIN
Alert Code Alert Condition Lockout Level
Lockout
Indication
Normal Run
Solid Green
Normal operation, no trip. N/A N/A
Code1
Yellow Flash 1
Long run time. Compressor is running for more than
18 hours at full load. (Code1 is disabled in Heat Pump
mode.)
N/A N/A
Code2
Yellow Flash 2
Compressor Pressure trip. Compressor runs for 12sec
to 15min followed by a compressor trip condition lasting
longer than 7min.
4x consecutive,
10x total
Red: Flash 2
Code 3
Yellow Flash 3
Pressure switch cycling. Compressor runs for 12sec to
15min followed by a compressor trip lasting between
35sec to 7min.
4x consecutive,
10 total
Red: Flash 3
Code4
Yellow Flash 4
Locked rotor. Compressor trips within a compressor run
time of 12sec and does not start within 35sec.
10x consecutive Red: Flash 4
Code5
Yellow Flash 5
Compressor moderate run trip. Compressor runs for
15min to 18hrs followed by a compressor trip lasting
longer than 7min.
4x consecutive,
10x total
Red: Flash 5
Code6
Red Flash 6
Open start circuit. Module has detected Y or Y1, and
current in the R winding of the compressor and no
current in the S winding of the compressor for 2 seconds.
1 occurrence Red: Flash 6
Code7
Red Flash 7
Open run circuit. Module has detected Y or Y1, and
current in the S winding of the compressor and no current
in the R winding of the compressor for 2 seconds.
1 occurrence Red: Flash 7
Code8
Yellow Flash 8
Welded Contactor. Module has detected line currents
in R and S windings, and Y or Y1 is at 0 VAC for 15
seconds.
N/A N/A
Code9
Yellow Flash 9
Low Voltage. Module has detected a 24 VAC supply
voltage below 17 VAC +/- 1 VAC for 2 seconds
N/A N/A
Code10
Red Flash 10
Over Current Protection. PROT terminal has above a 2A
input for more than 40 milliseconds.
1 occurrence Red: Flash 10
Table 1 – Flash Code Description