Ferroli PEGASUS 97 2S User Manual (English)

Questions and Answers:

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Andrew RamosAug 14, 2025
Why are the electrodes not discharging in the ignition phase on my Ferroli PEGASUS 97 2S?
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  jenniferbrownAug 14, 2025
  If the electrodes on your Ferroli Thermostat aren't discharging during ignition, several factors could be at play. First, ensure the electrodes are correctly positioned and free of any deposits. Check that your control thermostat isn't set too low and verify the power supply. Also, inspect the connections at the ignition and ionisation electrodes, as well as the electronic flame controller. Confirm that the LINE-NEUTRAL connections aren't inverted and that the earth contacts are working efficiently. Finally, check the inlet gas pressure, look for any open pressure switches, reset the safety and fume thermostats if necessary, and ensure the room thermostat is closed.
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Heather MarshAug 17, 2025
How to fix burner flames that are too high, too low, or too yellow on a Ferroli PEGASUS 97 2S?
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  Cheryl DavisAug 17, 2025
  If your Ferroli Thermostat burner isn't burning correctly, with flames that are too high, too low, or too yellow, start by checking the gas supply pressure, as a dirty gas valve filter could be the cause. Also, ensure the boiler itself is clean, as dirty gas nozzles can affect the flame quality. Finally, make sure the room where the unit is located has sufficient ventilation for proper combustion.
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tallenAug 21, 2025
What to do if my Ferroli Thermostat shuts down the boiler after several lighting attempts?
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  Virginia GonzalezAug 21, 2025
  If your Ferroli Thermostat is shutting down the boiler after multiple lighting attempts, try cleaning the pilot burner nozzles with compressed air. Check that there's a regular gas flow to the boiler and that all air has been removed from the pipes. Ensure the electrodes are correctly positioned and free of deposits. Also, make sure the boiler is connected to an efficient earth connection and check the connections at the ignition and ionisation electrodes.
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Sergio AshleyAug 25, 2025
Why does my Ferroli Thermostat smell of unburnt gas and the temperature does not increase?
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  Ryan MooreAug 25, 2025
  If you smell unburnt gas and the temperature isn't increasing in your Ferroli Thermostat system, make sure the boiler is clean and check the flue draught. Also, check that gas consumption isn't excessive and that the 2-stage control thermostat is operating correctly. Ensure the gas valve 2nd stage operator (max. power) is fed and that gas consumption isn't less than what's expected. Verify the boiler is perfectly clean and adequate for the system, and ensure the heating pump isn't blocked.
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larry04Aug 27, 2025
What causes the water temperature to be too high or too low in my Ferroli PEGASUS 97 2S Thermostat?
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  Jennifer TaylorAug 27, 2025
  If the water temperature to your Ferroli Thermostat system is too high or too low, check the correct operation of the 2-stage control thermostat. Also, make sure the heating pump is not blocked and ensure that the characteristics of the circulating pump are adequate for the system.
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Alicia SteinAug 31, 2025
What causes an explosion at the burner or delay on ignition in my Ferroli PEGASUS 97 2S Thermostat?
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  Eric WilliamsAug 31, 2025
  If you experience an explosion at the burner or a delay on ignition with your Ferroli Thermostat, make sure the gas pressure is sufficient and that the boiler shell is not dirty.
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Jerry WolfeSep 3, 2025
Why is the control thermostat reactivated with too great a temperature difference in my Ferroli PEGASUS 97 2S?
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  andreayoungSep 3, 2025
  If the control thermostat in your Ferroli Thermostat is reactivated with too great a temperature difference, make sure the bulb is properly inserted in the sheath and check the operation of the 2-stage thermostat.
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xbentleySep 6, 2025
Why is my Ferroli PEGASUS 97 2S Thermostat producing condensate?
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  Dawn AndersonSep 6, 2025
  If your Ferroli Thermostat is producing condensate, ensure the boiler isn't operating at too low a temperature (below 50°C). Check regular gas consumption and the efficiency of the flue.
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Brandon ArcherSep 10, 2025
Why does my Ferroli PEGASUS 97 2S Thermostat shut down for no apparent reason?
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  John BlanchardSep 10, 2025
  If your Ferroli Thermostat shuts down for no apparent reason, it could be due to safety thermostat activation because of an overtemperature or fume thermostat activation.