
© 2021 Staheli West
156
Faults
Fault 1328: Low Fire Nozzle Pressure Low While in High Fire
Burner State = High Fire & Low Fire Nozzle PSI < 20% of Fuel Pump PSI for 20 seconds
Causes
Troubleshooting
Fixes
• Faulty low fire nozzle pressure
sensor.
• Swap with high fire nozzle
pressure sensor.
• Replace nozzle pressure sensor.
Part #32982
• Faulty fuel pump pressure
sensor.
• Swap with high fire nozzle
pressure sensor.
• Replace fuel pump pressure
sensor. Part #32982
• Restricted fuel flow through the
low fire and safety fuel solenoid
valves.
• Inspect fuel paths, check for
overtightened fittings. See Test
1001.
• Remove restrictions.
• Clogged fuel filter.
• Replace fuel filter. Part #10054
• Loose/Leaking fuel nozzle.
• Remove burner gun and inspect
nozzle.
• Tighten/Replace nozzle.
• Clogged fuel lines.
• Use compressed air to clear the lines.
Fault 1329: Low Fire Nozzle Pressure Low While in Low Fire
Burner State = Low Fire & Low Fire Nozzle PSI < 20% of Fuel Pump PSI for 20 seconds
Causes
Troubleshooting
Fixes
• Fuel nozzle 1 & 2 sensor cables
are crossed.
• Swap cables to appropriate sensor.
• Faulty low fire nozzle pressure
sensor.
• Swap with high fire nozzle
pressure sensor.
• Replace nozzle pressure sensor.
Part #32982
• Faulty fuel pump pressure
sensor.
• Swap with high fire nozzle
pressure sensor.
• Replace fuel pump pressure
sensor. Part #32982
• Restricted fuel flow through the
low fire and safety fuel solenoid
valves.
• Inspect fuel paths, check for
overtightened fittings. See Test
1001.
• Remove restrictions.
• Clogged fuel filter.
• Replace fuel filter. Part #10054
• Loose/Leaking fuel nozzle.
• Remove burner gun and inspect
nozzle.
• Tighten/Replace nozzle.
• Clogged fuel lines.
• Use compressed air to clear the lines.
Summary of Contents for DewPoint 331
Page 213: ... 2021 Staheli West 204 Notes ...
Page 214: ... 2021 Staheli West 205 Notes ...
Page 215: ... 2021 Staheli West 206 Notes ...