Troubleshooting for low outlet gas pressure

Diagnostic codes 530, 531, 533

Diagnostic codes 530, 531, and 533 identify low pressure at the outlet.

Symptoms

Code Symptoms XPR® models XPR action Code cancels with...
530
  • The line A pressure (P5) is less than 75% of the setpoint for 200 milliseconds for any process.
  • P5 is less than 75% of the P21 sensor reading for 4 seconds for a mixed-fuel gas process.
  • P5 is less than 75% of the P7 setpoint for 4 seconds for an F5 process.
 All models Ramp down
  • Set process
  • Remote on-off
531 For a minimum of 200 milliseconds, the line B pressure is less than 75% of setpoint.
533 For a minimum of 200 milliseconds, the F5 pressure sensor (P7) is less than 75% of setpoint.

Corrective action

  1. Look at the diagnostic code history for pressure-related codes.

    The code history can help to identify where to look for flow or pressure problems.

  2. Make sure that the gas pressure for line A (P2) or line B (P1) is in the correct range.
  3. If the measurement is too high or too low, use the regulators to adjust the pressure for the line A, line B, or F5 gas to the correct range.
  4. Examine the consumables:
    1. Make sure that the correct consumables are installed.
    2. Make sure that there is no damage or excess wear.
  5. Replace the incorrect consumables or the consumables that have damage or excess wear.

Verification

Use the gas volume monitors that are near the pressure transducers to look for gas leaks.