THERMOSTAHL ENP 20 - User Manual

Questions and Answers

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John ChangAug 10, 2025
Why is my THERMOSTAHL ENP 20 Boiler not reaching the set temperature?
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  waltersjenniferAug 10, 2025
  There are several potential causes for a THERMOSTAHL Boiler not reaching the set temperature: * A blocked fan. You should check or replace the fan, and also check the function of the fan regulator and thermostat. * Blocked air passages. If this is the case, clean the air passages. * A dirty boiler. Clean the boiler. * Incorrect boiler start-up. Start the boiler correctly. * Insufficient water in the system. Fill the system. * Pump debit too high. Regulate the pump speed. * Bad quality fuel. Change the fuel used. * Insufficient chimney draught. Check or clean the chimney.
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Jerry ReedAug 14, 2025
What to do if there's smoke coming out of the THERMOSTAHL ENP 20 Boiler doors?
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  Kenneth MartinAug 15, 2025
  If you observe smoke coming out of the doors of your THERMOSTAHL Boiler, consider these possible causes: * The boiler doors may not be properly regulated. Adjust the doors to ensure the sealing cord remains tight. * The sealing cord of the door may be defective. Check the sealing cord and replace it if necessary. * There may be insufficient chimney draught. Inspect and clean the chimney. * The fan may be supplying too much air. Reduce the air speed.
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Kevin McfarlandAug 20, 2025
How to fix high temperature in the THERMOSTAHL Boiler but low temperature at the radiators?
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  Jesse RodgersAug 20, 2025
  If you are experiencing high temperature in your THERMOSTAHL Boiler but low temperature at the radiators, it could be due to: * Too high hydraulic resistance in the heating network. Increase the pump speed. * The thermostatic mixing valve is connected incorrectly. Check or replace the mixing valve.
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Stacey OrtizAug 25, 2025
What to do if I see condensation formation in the fire chamber of my THERMOSTAHL ENP 20 Boiler?
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  uortegaAug 25, 2025
  If you notice condensation forming in the fire chamber of your THERMOSTAHL Boiler, it might be due to: * Too big boiler power. Reduce the amount of fuel loaded in the chamber. * Too low return temperature in the boiler. Install a return protection system or thermostatic valve. * Fuel with excessive humidity. Change the fuel used.
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Lori KnightAug 29, 2025
What to do if the fan does not function or makes a lot of noise in my THERMOSTAHL Boiler?
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  Edward ColonAug 29, 2025
  If the fan in your THERMOSTAHL Boiler isn't working or is making excessive noise, consider the following: * The set temperature may have been reached. Ensure correct boiler function. * The fan may have been disconnected by the safety thermostat. Reset it manually. * There may be a capacitor or motor defect. Check and replace the fan if necessary. * There might be a bad electrical connection to the fan. Check the electrical connection of the fan.
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matthew53Sep 3, 2025
How to troubleshoot if the lamps of the control panel do not light on my THERMOSTAHL Boiler?
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  Colton MooreSep 3, 2025
  If the lamps on the control panel of your THERMOSTAHL Boiler are not lighting, here are some possible causes: * There is no electrical supply to the lamp. Check or replace the lamp. * The control panel is not connected to electricity. Connect it to electricity. * There is a lamp defect. Check or replace the lamp. * There is an electric cable defect. Check or replace the cables.