Chiller Troubleshooting
60 ARTC-SVX002A-EN
winding of the compressor, but no current is detected in
the s winding of the compressor for 2 seconds.
CODE 7 – Open Run Circuit: The module will lockout the
compressor and flash red seven times if the module
detects a demand signal in the Y terminal and current in
the S winding of the compressor, but no current is detected
in the R winding of the compressor for 2 seconds.
CODE 8 – Welded Contactor: The module will flash yellow
eight times if it has detected line currents in the S and R
windings and demand is absent for 15 seconds.
CODE 9 – Low Voltage: The module will flash nine times if
the module supply voltage drops below 17 Vac for 2
seconds. The module will prevent the compressor from
starting until adequate voltage is established.
CODE10 – Over-Current Protection: When the current at the
PROT terminal is greater than 2A for 40 milliseconds, the
module will flash a CODE10. The red LED will flash 10 times
with the yellow LED remaining off. This event will cause a
lockout of the compressor and indicates that the module is
mis-wired or the contactor coil is shorted to ground.
Table 12. Compressor fault code summary
Alert
Code
Alert
Condition
Lockout
Level
Lockout
Indication
Normal Run
Solid Green
Normal operation, no alarm status. N/A N/A
CODE 1
Yellow Flash 1
Long run time. Compressor is running for more than 18 hours at full load. (CODE
1 is disabled in heat pump mode.)
N/A N/A
CODE 2
Yellow Flash 2
Compressor pressure trip. Compressor runs for 12 seconds to 15 minutes followed
by a compressor trip condition lasting longer than 7 minutes.
4x consecutive, 10x
total
Red:
Flash 2
CODE 3
Yellow Flash 3
Pressure switch cycling. Compressor runs for 12 seconds to 15 minutes followed by
a compressor trip lasting 35 seconds to 7 minutes.
4x consecutive, 10
total
Red:
Flash 3
CODE 4
Yellow Flash 4
Locked rotor. Compressor trips within a compressor run time of 12 seconds and
does not start within 35 seconds.
10x consecutive
Red:
Flash 4
CODE 5
Yellow Flash 5
Compressor moderate run trip. Compressor runs for 15 minutes to 18 hours
followed by a compressor trip lasting longer than 7 minutes.
4x consecutive, 10x
total
Red:
Flash 5
CODE 6
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
CODE 7
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
CODE 8
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
CODE 9
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
CODE 10
Red Flash 10
Over current protection. PROT terminal has above a 2A input for more than 40
milliseconds.
1 occurrence
Red:
Flash 10
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