What causes fault code GEN-CMP1 (Compressed Air System Low Pressure)?

Air compressor tripped or in fault — check compressor panel. Large air leak in distribution piping. Air dryer not cycling — moisture causing downstream issues. Demand exceeds compressor capacity — too many pneumatic loads. Air receiver tank drain stuck open — bleeding pressure. Regulator failure at main header

How do I fix fault code GEN-CMP1?

Check compressor status — restart if safe to do so. Walk the air line and listen for leaks — mark and repair. Check main pressure gauge at compressor discharge — should be 100-125 PSI. Verify air dryer is cycling — check dew point indicator. Check automatic drain valves — stuck open drains bleed pressure fast. If demand exceeds capacity, stagger pneumatic equipment startup. Check main header regulator — set to plant spec (typically 80-90 PSI downstream)

Compressed Air System Low Pressure

GEN-CMP1

Plant compressed air pressure below minimum operating threshold. Pneumatic equipment may malfunction or stop.

high general packaging palletizer

compressed air pneumatic compressor pressure leak

Probable Causes (ranked)

Air compressor tripped or in fault — check compressor panel
Large air leak in distribution piping
Air dryer not cycling — moisture causing downstream issues
Demand exceeds compressor capacity — too many pneumatic loads
Air receiver tank drain stuck open — bleeding pressure
Regulator failure at main header

Fix Steps

1 Check compressor status — restart if safe to do so
2 Walk the air line and listen for leaks — mark and repair
3 Check main pressure gauge at compressor discharge — should be 100-125 PSI
4 Verify air dryer is cycling — check dew point indicator
5 Check automatic drain valves — stuck open drains bleed pressure fast
6 If demand exceeds capacity, stagger pneumatic equipment startup
7 Check main header regulator — set to plant spec (typically 80-90 PSI downstream)

Field Trick

Shut down all pneumatic equipment on a weekend and watch the compressor. If it cycles on frequently with nothing running, you have a major leak to find.

Suggested Replacement Parts

Parts matched to fault category: Solenoid Valve

SMC SY3120 Solenoid Valve P/N: SY3120-5LZD-M5 5/2 way, 24VDC, M5 ports, direct piping, 0.15-0.7 MPa

AutomationDirect $32.00 Amazon $28.00 McMaster-Carr $45.00 Grainger $42.00

Festo VUVG Solenoid Valve P/N: VUVG-LK14-M52-AT-G18-1R8L 5/2 way, 24VDC, G1/8 ports, spring return

AutomationDirect $55.00 Amazon $62.00 Grainger $70.00

Air Pressure Regulator + Filter Combo P/N: AW30-03BG SMC AW series, 3/8 NPT, 5-125 PSI, with gauge and bowl guard

AutomationDirect $38.00 Amazon $32.00 McMaster-Carr $48.00

Prices are estimates. Verify part numbers match your equipment before ordering.

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