Unigas PBY90 - User Manual

Other manuals for Unigas PBY90

Manual Of Installation - Use - Maintenance48 pages

Questions and Answers

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christinasmithAug 12, 2025
Why won't my Unigas PBY90 start?
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  Erica RichardsonAug 13, 2025
  The Unigas Burner might not start due to several reasons. It could be caused by an open main switch, a line fuse intervention, a max pressure switch fault, a fan thermal cutout intervention, or auxiliary relais fuses intervention. Other potential causes include a control box fault, a servocontrol fault, a smokey flame, an ignition transformer fault, a dirty or wrongly positioned ignition electrode, a dirty nozzle, a defective fuel solenoid valve, a dirty or defective photoresistor, a defective HI-LO flame thermostat, a wrong position of servocontrol cams, fuel pressure being too low, or dirty fuel filters.
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Pamela JonesAug 16, 2025
What to do if my Unigas PBY90 stops during operation?
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  Michael CohenAug 16, 2025
  If your Unigas Burner stops during operation, it might be due to a dirty nozzle, a defective fuel solenoid valve, or a photoresistor that is either dirty or defective. Other possible causes include a defective HI-LO flame thermostat or the servocontrol cams being in the wrong position.
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Steven DavisAug 20, 2025
Why does my Unigas PBY90 keep starting and stopping?
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  David MedinaAug 20, 2025
  If the Unigas Burner starts and stops, it could be due to a control box fault or a dirty nozzle.
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Alejandro JamesAug 25, 2025
What causes the Unigas Burner to stop and repeat the cycle during operation?
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  Steven PerezAug 25, 2025
  The Unigas Burner stopping and repeating the cycle during operation may be due to a control box fault.
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Savannah ContrerasAug 27, 2025
Why does my Unigas PBY90 repeat pre-purge?
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  villacarrieAug 27, 2025
  The Unigas Burner repeating pre-purge is possibly due to a control box fault.
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Kristin MillerAug 31, 2025
What to do if Unigas Burner does not ignite and goes to shut down?
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  Ashley SandovalAug 31, 2025
  If the Unigas Burner fails to ignite and shuts down, several issues could be the cause. It could be a faulty control box, circuit enabling thermostat, or ignition transformer, in which case you should replace the faulty component. The ignition electrode might be wrongly positioned, so reposition it. Other possible causes include a dirty nozzle, faulty oil valve, faulty or dirty photoresistor, or a faulty high-low flame thermostat, which would require cleaning or replacement of the respective part. The actuator cam might not be calibrated, so calibrate the actuator cam. Low oil pressure, a dirty oil filter, or a dirty ignition electrode could also be responsible; check and correct the oil pressure, and clean or replace the filter or electrode as needed.
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Christine CookSep 3, 2025
Why does my Unigas Burner start up with cold oil?
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  Amanda BradshawSep 4, 2025
  If the Unigas Burner starts up with cold oil, it could be due to a faulty oil resistor, in which case you should replace it. Alternatively, the oil enabling thermostat might have tripped; try resetting it.
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Tracy WongSep 7, 2025
What to do if Unigas Burner goes off and repeats the cycle during operation?
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  John McfarlandSep 8, 2025
  If the Unigas Burner goes off and repeats the cycle during operation, it could be due to a smoky flame. Adjust the operation to reduce the smoky flame.