Blink Code 1

The pump is diving rapidly. A pressure imbalance between the up and down stroke of the pump is causing the pump to dive with excessive speed.

• Pump diving may occur when the pump runs out material while spraying at high pressure.
• Verify that material is being properly fed to the pump.
• Pressure from the hose could flow back into the pump on the down stroke.
• Verify that the check valve is installed and is properly working.