Fault 1253: Feed Pump Protection Psi Sensor Not Connected; Fault 1254: Feed Pump Protection Psi Sensor Amperage High; Fault 1255: Steam Pressure Sensor Not Connected; Fault 1256: Steam Pressure Sensor Amperage High - Staheli West DewPoint 331 Owner's Manual

Fault 1253: Feed Pump Protection PSI Sensor Not Connected

Indicates ≥4mA is not present on the signal wire.
Causes
• Fault still active.
• Sensor disconnected.
• Faulty sensor.
• Faulty wiring.

Fault 1254: Feed Pump Protection PSI Sensor Amperage High

Indicates >22mA is present on the signal wire for 5 seconds.
Causes
• Faulty sensor.
• Faulty wiring.

Fault 1255: Steam Pressure Sensor Not Connected

Indicates ≥4mA is not present on the signal wire.
Causes
• Fault still active.
• Sensor disconnected.
• Faulty sensor.
• Faulty wiring.

Fault 1256: Steam Pressure Sensor Amperage High

Indicates >22mA is present on the signal wire for 5 seconds.
Causes
• Faulty sensor.
• Faulty wiring.
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Faults
Troubleshooting
• Sensor won't give correct
reading until fault is reset.
• Swap with compatible sensor
(See sensor page).
• Inspect the wiring for ground,
continuity, and proper voltage.
Troubleshooting
• Swap with compatible sensor
(See sensor page).
• Inspect the wiring for ground,
continuity, and proper voltage.
Troubleshooting
• Sensor won't give correct
reading until fault is reset.
• Swap with compatible sensor
(See sensor page).
• Inspect the wiring for ground,
continuity, and proper voltage.
Troubleshooting
• Swap with compatible sensor
(See sensor page).
• Inspect the wiring for ground,
continuity, and proper voltage.
© 2021 Staheli West
Fixes
• Reset the fault.
• Connect sensor.
• Replace sensor.
• Repair/Replace wiring.
Fixes
• Replace sensor.
• Repair/Replace wiring.
Fixes
• Reset the fault.
• Connect sensor.
• Replace sensor.
• Repair/Replace wiring.
Fixes
• Replace sensor.
• Repair/Replace wiring.