All Portable Air Compressors (Atlas Copco / Sullair / Doosan) Fault Codes
140 Portable Air Compressors (Atlas Copco / Sullair / Doosan) diesel fault codes. Click any code for causes, diagnostics, severity, and common fixes.
ATLAS-COPCO-2000 critical
Emergency Stop (Alarm 2000)
ATLAS-COPCO-2005 critical
Immediate Stop (Alarm 2005)
ATLAS-COPCO-2420 critical
Emergency Run (Alarm 2420)
ATLAS-COPCO-3060 critical
Alarm 3060 — Meaning Depends on Controller: Vessel pressure high shutdown / Working pressure high shutdown
ATLAS-COPCO-3065 critical
Alarm 3065 — Meaning Depends on Controller: Vessel pressure high shutdown 2 / Working pressure high shutdown 2
DOOSAN-CODE-1 critical
Compressor Discharge Temperature Switch (S3) Open — Overheat Shutdown
DOOSAN-CODE-2 critical
Separator Tank Temperature Switch (S2) Open — Overheat Shutdown
DOOSAN-CODE-5 critical
Engine Oil Pressure Switch (S5) Open — Shutdown
DOOSAN-CODE-6 critical
Regulation Pressure Transducer (PT2) Out of Limits — Shutdown
DOOSAN-CODE-8 critical
Low Fuel Shutdown (U1 Switch Open)
SULLAIR-E-STOP critical
E-Stop Push Button Active
SULLAIR-HIGH-SUMP-PRESSURE critical
High Sump Pressure — Control/Valve Fault
SULLAIR-HIGH-TEMPERATURE critical
High Temperature 1/2/3 — Discharge Over-Temperature Fault
SULLAIR-MAIN-MOTOR-OVERLOAD critical
Main Motor Overload — Relay Tripped
SULLAIR-STARTER-AUX-CONTACT critical
Starter Aux. Contact — Starter Failed to Operate
ATLAS-COPCO-2010 serious
Alarm 2010 — Meaning Depends on Controller: Conf digital input 1 alarm / Coolant Temperature
ATLAS-COPCO-2020 serious
Alarm 2020 — Meaning Depends on Controller: Conf digital input 2 alarm / Engine Oil Pressure Alarm
ATLAS-COPCO-2030 serious
Alarm 2030 — Meaning Depends on Controller: Conf digital input 3 alarm / Engine Coolant Level
ATLAS-COPCO-2040 serious
Alarm 2040 — Meaning Depends on Controller: Compressor Element Temperature / Conf digital input 4 alarm
ATLAS-COPCO-3010 serious
Fuel level low 2 (Alarm 3010)
ATLAS-COPCO-3400 serious
Pumper oil pressure alarm 1 (Alarm 3400)
ATLAS-COPCO-3410 serious
Pumper oil pressure alarm 2 (Alarm 3410)
ATLAS-COPCO-3420 serious
Pumper oil pressure sensor circuit (Alarm 3420)
ATLAS-COPCO-4000 serious
Alarm 4000 — Meaning Depends on Controller: L.P. Element temp. alarm 1 / single stage 2 elements
ATLAS-COPCO-4010 serious
Alarm 4010 — Meaning Depends on Controller: L.P. Element temp. alarm 2 / single stage 2 elements
ATLAS-COPCO-4020 serious
Alarm 4020 — Meaning Depends on Controller: L.P. Element temp. alarm 3 / single stage 2 elements
ATLAS-COPCO-4040 serious
Alarm 4040 — Meaning Depends on Controller: L.P. Element temp. sensor circuit / single stage 2 elements
ATLAS-COPCO-4050 serious
Alarm 4050 — Meaning Depends on Controller: Ambient temp. alarm 1 / Engine coolant temp alarm1
ATLAS-COPCO-4060 serious
Alarm 4060 — Meaning Depends on Controller: Ambient temp. alarm 2 / Engine coolant temp alarm2
ATLAS-COPCO-4070 serious
Alarm 4070 — Meaning Depends on Controller: Ambient temp. sensor circuit / Engine coolant temp sensor circuit
ATLAS-COPCO-4150 serious
Alarm 4150 — Meaning Depends on Controller: H.P. Element temp. alarm 1 / single stage 2 elements
ATLAS-COPCO-4160 serious
Alarm 4160 — Meaning Depends on Controller: H.P. Element temp. alarm 2 / single stage 2 elements
ATLAS-COPCO-4170 serious
Alarm 4170 — Meaning Depends on Controller: H.P. Element temp. alarm 3 / single stage 2 elements
ATLAS-COPCO-4190 serious
Alarm 4190 — Meaning Depends on Controller: H.P. Element temp. sensor circuit / single stage 2 elements
ATLAS-COPCO-4300 serious
Alarm 4300 — Meaning Depends on Controller: Conf temp input 1 alarm 1 / M.P. Element temp. alarm 1
ATLAS-COPCO-4310 serious
Alarm 4310 — Meaning Depends on Controller: Conf temp input 1 alarm 2 / M.P. Element temp. alarm 2
ATLAS-COPCO-4320 serious
Alarm 4320 — Meaning Depends on Controller: Conf temp input 1 sensor circuit / M.P. Element temp. alarm 3
ATLAS-COPCO-4340 serious
M.P. Element temp. sensor circuit (Alarm 4340)
ATLAS-COPCO-7020 serious
Engine Overspeed (Alarm 7020)
ATLAS-COPCO-7030 serious
ECU engine coolant temp. alarm (Alarm 7030)
ATLAS-COPCO-7040 serious
ECU engine oil pressure alarm (Alarm 7040)
ATLAS-COPCO-7503 serious
ACTUATOR TEMPERATURE ERROR (Alarm 7503)
ATLAS-COPCO-7700 serious
JUNCTION TEMPERATURE ALARM 1 (Alarm 7700)
ATLAS-COPCO-7710 serious
JUNCTION TEMPERATURE ALARM 2 (Alarm 7710)
SULLAIR-ANALOG-INPUT-FAULT serious
High/Low Analog Input (AN0-AN9) — Sensor Circuit Fault
SULLAIR-AUX-MOTOR-OVERLOAD serious
Aux. Motor Overload — Fan/Pump Motor Tripped
SULLAIR-HIGH-PACKAGE-PRESSURE serious
High Package Pressure / High Pressure A/B
SULLAIR-INTERNAL-COM-ERROR serious
Internal Com Error — Module Network Fault
SULLAIR-LOW-FLUID-PRESSURE serious
Low Fluid Pressure
SULLAIR-SEPARATOR-DP-HIGH serious
Separator dP High — Plugged Separator
ATLAS-COPCO-1157 moderate
OilXpert Homing Fault (Alarm 1157)
ATLAS-COPCO-1230 moderate
Fuel Fill Alarm / Pump Logic Disabled (Alarm 1230)
ATLAS-COPCO-1270 moderate
DEF Fill Alarm / DEF Fill Logic Disabled (Alarm 1270)
ATLAS-COPCO-3000 moderate
Fuel level low 1 (Alarm 3000)
ATLAS-COPCO-3050 moderate
Alarm 3050 — Meaning Depends on Controller: Vessel pressure high warning / Working pressure high warning
ATLAS-COPCO-3055 moderate
Alarm 3055 — Meaning Depends on Controller: Vessel pressure high warning 2 / Working pressure high warning 2
ATLAS-COPCO-3080 moderate
Alarm 3080 — Meaning Depends on Controller: Vessel pressure sensor circuit / Working pressure sensor circuit
ATLAS-COPCO-3100 moderate
Regulating pressure alarm 1 (Alarm 3100)
ATLAS-COPCO-3110 moderate
Regulating pressure alarm 2 (Alarm 3110)
ATLAS-COPCO-3130 moderate
Regulating pressure sensor circuit (Alarm 3130)
ATLAS-COPCO-3150 moderate
Air discharge pressure alarm 1 (Alarm 3150)
ATLAS-COPCO-3160 moderate
Air discharge pressure alarm 2 (Alarm 3160)
ATLAS-COPCO-3170 moderate
Air discharge pressure circuit (Alarm 3170)
ATLAS-COPCO-3200 moderate
Oil level alarm 1 (Alarm 3200)
ATLAS-COPCO-3210 moderate
Oil level alarm 2 (Alarm 3210)
ATLAS-COPCO-3220 moderate
Oil level sensor circuit (Alarm 3220)
ATLAS-COPCO-3250 moderate
Pressure dewpoint alarm 1 (Alarm 3250)
ATLAS-COPCO-3260 moderate
Pressure dewpoint alarm 2 (Alarm 3260)
ATLAS-COPCO-3270 moderate
Pressure dewpoint sensor circuit (Alarm 3270)
ATLAS-COPCO-3300 moderate
Inlet pressure alarm 1 (Alarm 3300)
ATLAS-COPCO-3310 moderate
Inlet pressure alarm 2 (Alarm 3310)
ATLAS-COPCO-3330 moderate
INLET PRESSURE SENSOR ALARM (Alarm 3330)
ATLAS-COPCO-3350 moderate
Suction pressure alarm 1 (Alarm 3350)
ATLAS-COPCO-3360 moderate
Suction pressure alarm 2 (Alarm 3360)
ATLAS-COPCO-3370 moderate
Suction pressure sensor circuit (Alarm 3370)
ATLAS-COPCO-3450 moderate
Battery low alarm (Alarm 3450)
ATLAS-COPCO-3455 moderate
Low battery voltage during last crank (Alarm 3455)
ATLAS-COPCO-3460 moderate
Battery high alarm (Alarm 3460)
ATLAS-COPCO-3500 moderate
Alarm 3500 — Meaning Depends on Controller: Conf voltage input 1 alarm 1 / Interstage pressure 1 alarm 1
ATLAS-COPCO-3510 moderate
Alarm 3510 — Meaning Depends on Controller: Conf voltage input 1 alarm 2 / Interstage pressure 1 alarm 2
ATLAS-COPCO-3520 moderate
Conf voltage input 1 sensor circuit (Alarm 3520)
ATLAS-COPCO-3530 moderate
Interstage pressure 1 sensor circuit (Alarm 3530)
ATLAS-COPCO-3550 moderate
Interstage pressure 2 alarm 1 (Alarm 3550)
ATLAS-COPCO-3560 moderate
Alarm 3560 — Meaning Depends on Controller: Conf voltage input 2 alarm 2 / Interstage pressure 2 alarm 2
ATLAS-COPCO-3570 moderate
Conf voltage input 2 sensor circuit (Alarm 3570)
ATLAS-COPCO-3580 moderate
Interstage pressure 2 sensor circuit (Alarm 3580)
ATLAS-COPCO-3600 moderate
Interstage pressure 3 alarm 1 (Alarm 3600)
ATLAS-COPCO-3610 moderate
Interstage pressure 3 alarm 2 (Alarm 3610)
ATLAS-COPCO-3630 moderate
Interstage pressure 3 sensor circuit (Alarm 3630)
ATLAS-COPCO-4100 moderate
Air discharge temp. alarm 1 (Alarm 4100)
ATLAS-COPCO-4110 moderate
Air discharge temp. alarm 2 (Alarm 4110)
ATLAS-COPCO-4120 moderate
Air discharge temp. sensor circuit (Alarm 4120)
ATLAS-COPCO-4220 moderate
Aftercooler air temp. sensor circuit (Alarm 4220)
ATLAS-COPCO-4270 moderate
Suction air temp sensor circuit (Alarm 4270)
ATLAS-COPCO-4370 moderate
Conf temp input 2 sensor circuit (Alarm 4370)
ATLAS-COPCO-4420 moderate
Cylinder 1 temp. sensor circuit (Alarm 4420)
ATLAS-COPCO-4470 moderate
Cylinder 2 temp. sensor circuit (Alarm 4470)
ATLAS-COPCO-4520 moderate
Cylinder 3 temp. sensor circuit (Alarm 4520)
ATLAS-COPCO-4570 moderate
Cylinder 4 temp. sensor circuit (Alarm 4570)
ATLAS-COPCO-4620 moderate
Cylinder 5 temp. sensor circuit (Alarm 4620)
ATLAS-COPCO-4670 moderate
Cylinder 6 temp. sensor circuit (Alarm 4670)
ATLAS-COPCO-4720 moderate
Cylinder 7 temp. sensor circuit (Alarm 4720)
ATLAS-COPCO-4770 moderate
Cylinder 8 temp. sensor circuit (Alarm 4770)
ATLAS-COPCO-4820 moderate
Cylinder 9 temp. sensor circuit (Alarm 4820)
ATLAS-COPCO-4870 moderate
Cylinder 10 temp. sensor circuit (Alarm 4870)
ATLAS-COPCO-4920 moderate
Cylinder 11 temp. sensor circuit (Alarm 4920)
ATLAS-COPCO-4970 moderate
Cylinder 12 temp. sensor circuit (Alarm 4970)
ATLAS-COPCO-4990 moderate
VDO Sensor Circuit (Alarm 4990)
ATLAS-COPCO-6200 moderate
VESSEL PRESSURE LIMITTING (Alarm 6200)
ATLAS-COPCO-6329 moderate
Starter speed too low (Alarm 6329)
ATLAS-COPCO-6380 moderate
Vessel pressure too low to load (Alarm 6380)
ATLAS-COPCO-6580 moderate
Check Compressor Oil (Alarm 6580)
ATLAS-COPCO-7010 moderate
Engine Speed Too Low (Alarm 7010)
ATLAS-COPCO-7150 moderate
Alarm 7150 — Meaning Depends on Controller: DEF tank level 1 / Fuel pressure alarm 1
ATLAS-COPCO-7160 moderate
Alarm 7160 — Meaning Depends on Controller: DEF tank level 2 / Fuel pressure alarm 2
ATLAS-COPCO-7170 moderate
Alarm 7170 — Meaning Depends on Controller: DEF level circuit / DPF LSR monitoring
ATLAS-COPCO-7180 moderate
Alarm 7180 — Meaning Depends on Controller: Ash load / DEF tank level 1
ATLAS-COPCO-7190 moderate
DEF tank level 2 (Alarm 7190)
ATLAS-COPCO-7210 moderate
Engine Speed Alarm 3 (Alarm 7210)
ATLAS-COPCO-7220 moderate
Combo Sensor Communication Failure (Alarm 7220)
ATLAS-COPCO-7230 moderate
Ta Sensor Warning (Alarm 7230)
ATLAS-COPCO-7231 moderate
Pa Sensor Warning (Alarm 7231)
ATLAS-COPCO-7232 moderate
RHa Sensor Warning (Alarm 7232)
ATLAS-COPCO-7300 moderate
ECU oil level 1 (Alarm 7300)
ATLAS-COPCO-7310 moderate
ECU oil level 2 (Alarm 7310)
ATLAS-COPCO-7720 moderate
MOTOR SPEED ALARM 1 (Alarm 7720)
ATLAS-COPCO-7730 moderate
MOTOR SPEED ALARM 2 (Alarm 7730)
ATLAS-COPCO-9010 moderate
Logic Alarm 1 (Alarm 9010)
DOOSAN-CODE-3 moderate
Low Alternator / Battery Voltage (Below 11.6V) — Alert
DOOSAN-CODE-9 moderate
Air Filter Restriction — Alert
SULLAIR-HIGH-AIR-FILTER-DP moderate
High Air Filter dP — Inlet Filter Restricted
SULLAIR-HIGH-FLUID-FILTER-DP moderate
High Fluid Filter dP — Clogged Filter
SULLAIR-LOW-LINE-PRESSURE moderate
Low Line Pressure — Demand Exceeds Capacity
SULLAIR-LOW-SUMP-PRESSURE moderate
Low Sump Pressure — Sensor or Start Fault
SULLAIR-POWER-INTERRUPTION moderate
Power Interruption — Intermittent Control Power
SULLAIR-SEQUENCE-COMM-ERROR moderate
Sequence Comm Error — Multi-Compressor Link Fault
ATLAS-COPCO-1500 low
Initial service alarm (Alarm 1500)
ATLAS-COPCO-7260 low
Status 4. Must contact a service to complete DPF parked (Alarm 7260)
ATLAS-COPCO-7270 low
Status 5. Must contact a service to take care of DPF service Status 5. Must contact a service to take care of DPF service (Alarm 7270)
SULLAIR-REPLACE-BATTERY low
Replace Battery — Controller Backup Battery Low