Reversomatic RERV-S100

Questions and Answers

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Patrick ReyesAug 15, 2025
How to improve low airflow in my Reversomatic RERV-S100?
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  mhernandezAug 15, 2025
  Low airflow in your Reversomatic Furnace can stem from several causes. Here's what to check: * **Improperly balanced HRV/ERV airflow:** Have a professional balancer or contractor balance the unit. * **Clogged filter:** Remove and clean the filter. * **Obstructed core:** Remove and clean the core. * **Blocked exterior fresh air supply:** Remove the blockage. * **Closed damper:** Check the damper. * **Restricting ductwork:** Inspect the duct installation. * **Low power supply:** Switch off the unit immediately and call the electrician to check the voltage.
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smithabigailAug 18, 2025
What to do if my Reversomatic RERV-S100 is not defrosting properly?
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  Susan ThomasAug 19, 2025
  If your Reversomatic Furnace isn't defrosting correctly, consider these potential causes: * **Frozen fresh air duct:** Check for and remove any ice. * **Improperly balanced HRV/ERV airflow:** Have a professional balancer or contractor balance the unit. * **Defective temperature sensor:** Replace the temperature sensor.
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Jeremy FreemanAug 22, 2025
Why is my Reversomatic Furnace sensing cold air from the supply?
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  cohenheatherAug 22, 2025
  If your Reversomatic Furnace is sensing cold air from the supply, here are a few things to investigate: * **Blocked exhaust hood:** Remove any blockages and clean the hood outside the building. * **Improperly balanced HRV/ERV airflow:** Have a contractor balance the unit. * **Extremely cold outdoor temperature:** Consider installing a duct heater.
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Travis SchroederAug 26, 2025
What does it mean when the LEDs on my Reversomatic RERV-S100 flash twice?
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  Brandon BrowningAug 26, 2025
  If the LEDs on the Main Control board and the remote wall mount Timer Switch of your Reversomatic Furnace are flashing 0.5 sec On/0.5 sec Off/0.5 sec On then 2 sec Off, then repeat the cycle (2 Blinks), it could indicate: * **Obstructed damper:** Check the backdraft damper to ensure no screw interferes with its function. * **Exhaust fan jam/over-current:** Replace the fan.
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Duane JonesAug 29, 2025
Why doesn't the timer light stay on for my Reversomatic Furnace?
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  Cynthia StevensAug 29, 2025
  If the 20/40/60 minute light on your Reversomatic Furnace timer switch doesn't stay on, it might be due to: * **Loose connection:** Check the connection. * **Defective switch:** Replace the timer switch. * **Issue with main controller:** Reset the main controller.
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Andrew StanleySep 1, 2025
What does it mean when the LEDs on my Reversomatic Furnace flash three times?
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  Tristan LaneSep 1, 2025
  If the LEDs on the Main Control board and the remote wall mount Timer Switch of your Reversomatic Furnace are flashing 0.5 sec On/0.5 sec Off/0.5 sec On/0.5 sec Off/ 0.5 sec On, then 2 seconds Off, then repeat the cycle (3 Blinks), it indicates that the supply fan has an open circuit. This can be due to a burned motor or an overheated fan. Replace the motor.
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Laura DrakeSep 4, 2025
What does it mean when the LEDs on my Reversomatic Furnace flash four times?
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  elizabeth25Sep 4, 2025
  If the LEDs on the Main Control board and the remote wall mount Timer Switch of your Reversomatic Furnace are flashing 0.5 sec On/0.5 sec Off/0.5 sec On/0.5 sec Off/ 0.5 sec On/0.5 sec Off/0.5 sec On then 2 seconds Off, then repeat the cycle (4 Blinks), it could mean: * **Obstructed damper:** Check the back-draft damper, ensuring no screw interferes with its function. * **Supply fan jam/over-current:** Replace the fan.
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Shaun McclureSep 8, 2025
What does it mean when the LEDs on my Reversomatic RERV-S100 Furnace flash once?
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  kenneth32Sep 8, 2025
  If the LEDs on the Main Control board and the remote wall mount Timer Switch of your Reversomatic Furnace are flashing 0.5 second On then 2 seconds Off then repeat the cycle (1 Blink), it indicates an open circuit in the exhaust fan. This could be due to a burned motor or an overheated fan. Replace the motor.
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nealjuliaSep 12, 2025
What does it mean when the LEDs on my Reversomatic Furnace flash five times?
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  Emily OwenSep 12, 2025
  If the LEDs on the Main Control board and the remote wall mount Timer Switch of your Reversomatic Furnace flash 0.5 sec On/0.5 sec Off/ 0.5 sec On/0.5 sec Off/ 0.5 sec On/0.5 sec Off/ 0.5 sec On/0.5 sec Off/ 0.5 sec On/0.5 sec Off/ 0.5 sec On, then 2 seconds Off, then repeat the cycle (5 Blinks), it indicates a temperature sensor failure. In this case, both motors will shut off. Replace the temperature sensor.