
© 2021 Staheli West
135
Faults
Fault 1237: Hydraulic Case Drain PSI Sensor Not Connected
Indicates ≥4mA is not present on the signal wire.
Causes
Troubleshooting
Fixes
• Sensor disconnected.
• Connect sensor.
• Faulty sensor.
• Swap with compatible sensor
(See sensor page).
• Replace sensor.
• Faulty wiring.
• Inspect the wiring for ground,
continuity, and proper voltage.
• Repair/Replace wiring.
Fault 1238: Hydraulic Case Drain PSI Sensor Amperage High
Indicates >22mA is present on the signal wire for 5 seconds.
Causes
Troubleshooting
Fixes
• Faulty sensor.
• Swap with compatible sensor
(See sensor page).
• Replace sensor.
• Faulty wiring.
• Inspect the wiring for ground,
continuity, and proper voltage.
• Repair/Replace wiring.
Fault 1239: Boiler Water Level 1 Sensor Not Connected
Indicates ≥4mA is not present on the signal wire.
Causes
Troubleshooting
Fixes
• Sensor disconnected.
• Connect sensor.
• Faulty sensor.
• Swap with compatible sensor
(See sensor page).
• Replace sensor.
• Faulty wiring.
• Inspect the wiring for ground,
continuity, and proper voltage.
• Repair/Replace wiring.
Fault 1240: Boiler Water Level 1 Sensor Amperage High
Indicates >22mA is present on the signal wire for 5 seconds.
Causes
Troubleshooting
Fixes
• Faulty sensor.
• Swap with compatible sensor
(See sensor page).
• Replace sensor.
• Faulty wiring.
• Inspect the wiring for ground,
continuity, and proper voltage.
• Repair/Replace wiring.
Содержание DewPoint 331
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