Lennox Ducted Heating

Lennox Ducted Heating Error Code --

Ducted Heating:

What It Means

  • Soft disable - Soft disabling is when thermostat finds a device on the BUS that it does not recognize and the thermostat sends a the device a message to be in soft disabling mode until properly configured. Two horizontal bars will display.

Causes & actions from Lennox

How it shows
  • Integrated control 7-segment display: --

Steps to follow if the damper control module is displaying the soft disable code. Confirm proper wiring between all devices (thermostat, damper control module, indoor and outdoor). Cycle power to the control that is displaying the soft disable code. Put the room thermostat through set up. Go to setup / system devices / thermostat / edit / then push reset. Go to setup / system devices / thermostat / edit / then push resetAll.

Applicable models & manual sources
  • SLP99UHV

    Soft disable - Soft disabling is when thermostat finds a device on the BUS that it does not recognize and the thermostat sends a the device a message to be in soft disabling mode until properly configured. Two horizontal bars will display.

    SLP99UHV manual, page 30

Disclaimer: This information is for general reference. Code wording and instructions vary by model. Always follow the service manual for your exact unit.

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