
© 2021 Staheli West
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Faults
Fault 1050: Operating Pressure Tripped in Start
Fault 1051: Operating Pressure Tripped in Pre-Purge
Fault 1052: Operating Pressure Tripped in Purge
Fault 1053: Operating Pressure Tripped in Pre-Ignition
Fault 1054: Operating Pressure Tripped in Spark Ignition
Fault 1055: Operating Pressure Tripped in Main Ignition
Fault 1056: Operating Pressure Tripped in Run
Fault 1057: Operating Pressure Tripped in Post-Purge
The Operating Pressure Control Switch should trip at 14.5 PSI.
Causes
Troubleshooting
Fixes
• Operating pressure control
switch faulty / out of calibration.
• Perform “Test 1006”.
• Adjust the calibration nut to
14.5 PSI.
• Replace operating pressure
control switch.
• Blown fuse #23 (main fuse
block).
• Check fuse for blown
symptoms.
• Replace fuse #23 (2 amp).
• 1 or more pigtail valves are
open.
• Steam can be seen coming out
of the front supply water tanks.
• Close the open pigtail valves
(don’t forget the one behind the
manual PSI gauge).
• Faulty steam pressure sensor.
• Replace steam pressure sensor.
• Faulty wiring.
• Inspect the wiring for ground,
continuity, and proper voltage.
• Repair/Replace wiring.
Summary of Contents for DewPoint 331
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