A/C runs when in Furnace Mode

A/C runs when in Furnace Mode

Changing the fan speed to High or Low will cause the A/C fan to operate when in Furnace mode


There are three fan speeds in Furnace Mode:
●● “Low”: Fan operates continuously at low speed.
●● “High”: Fan operates continuously at high speed.
●● “Auto”: Fan is Off in Furnace Mode. A/C 
If additional indoor air circulation provided by the air conditioner is NOT desired during Furnace Mode, select “Auto” in Fan Mode to shut the air conditioner fan off. If “Low” or “High” is selected, the air conditioner fan will continue to operate at the selected speed.

There are three fan speeds in Cool Mode:
●● “Low”: Fan operates continuously at low speed. The compressor cycles On and Off.
●● “High”: Fan operates continuously at high speed. The compressor cycles On and Off.
●● “Auto”: Fan speed varies depending on the difference between the temperature set-point and room air temperature.
The compressor and the fan cycle On and Off with the CT thermostat.

There are three fan speeds in Heat Strip Mode:
●● “Low”: Fan operates continuously at low speed. Heat strip cycles On and Off.
●● “High”: Fan operates continuously at high speed. Heat strip cycles On and Off.
●● “Auto”: Fan operates in low speed and will cycle On and Off with the CT thermostat.
    • Related Articles

    • Dometic Furnace

      Warranty The Dometic DFSD20111 comes with a 2 year parts & labor warranty. Warranty does require that the unit be taken into an authorized Dometic service center for repair. Service Center Locator Helpful Articles A/C runs when in Furnace Mode ...
    • Truma Vario Heat Furnace

      Warranty The Truma VarioHeat comes with a 2-Year Parts & Labor warranty through Truma. Warranty does require that the unit be taken to an authorized Truma service center. To locate an authorized service center contact Truma Service at 855-558-7862 ...
    • Truma Aventa A/C

      Warranty The Truma Aventa comes with a 2-Year Parts & Labor warranty through Truma. Warranty does require that the unit be taken to an authorized Truma service center. To locate an authorized service center contact Truma Service at 855-558-7862 Ext ...
    • TRUMA AQUAGO STUCK IN CLEAN MODE (AMBER LIGHT FLASHING CONSTANTLY)

      For safety reasons, after 30 seconds the decalcification process (Clean Mode) cannot be stopped until the system has been rinsed in accordance with the instructions. If this happens, follow these steps. These steps should be used if you have ...
    • Atwood LP/CO Alarm & Atwood Furnace - Now Dometic

      The Atwood PN# 36681 LP/CO Alarm has been discontinued. Dometic purchased Atwood Products October 2014. Dometic Acquisition of Atwood Atwood products were not brought under the Dometic umbrella until 2017 however they were still sold as Atwood ...