© 2022 Staheli West
144
Faults
Fault 202: Operating Pressure Control Switch (OPLS) Is Tripped
The operating pressure control switch shuts off the burner anytime it is tripped; it trips anytime boiler
pressure is over 14.5 psi. Switch auto-resets at 12.5 psi.
Causes
Troubleshooting
Fixes
• 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
(Fault 207).
• Menu > Settings > Boiler
Pressure > Pressure Sensor
Selection | If steam psi 1 & 2
are reading more than 2 psi
different, then compare their
readings to the manual pressure
gauge on the top front of the
boiler and select the sensor that
matches the pressure reading to
temporarily run on one steam psi
sensor.
•Replace steam pressure sensor.
• Operating pressure control
switch faulty or out of calibration.
• Perform “Test 9”.
• Adjust the calibration nut to
14.5 psi.
• Replace operating pressure
control switch.
• Faulty SR-5 relay (Panel 1) Fault
244.
• Swap SR-5 with spare 120 V relay (Panel 1).
• Faulty wiring.
• Inspect the wiring for ground,
continuity, and proper voltage.
• Replace/Repair wiring.
Fault 203: Boiler Water Level Is High
• See Fault 303: Boiler water level higher than set point /
Boiler overflowing.
Fault 204: Pilot Propane Level Is Low
Indicates that the propane level count is down to 5 remaining lights (this can often be inaccurate).
Causes
Troubleshooting
Fixes
• Propane level is low.
• Check propane level.
• Refill propane tank.
•
Propane lighting count is not
accurate.
• Refill propane tank & reset propane light count (Menu > Settings >
Pilot Propane > Reset Pilot Propane Gauge).
