Desert Aire TotalAire QS

Questions and Answers

J
Joe FloresAug 9, 2025
What to do if my Desert Aire TotalAire QS Dehumidifier compressor does not run?
- J
  Jon LaneAug 9, 2025
  If your Desert Aire Dehumidifier's compressor isn't running, start by checking for a tripped circuit breaker or blown fuses to restore main power. Also, verify that the blower and compressor overloads haven't tripped; correct the cause and reset them if needed. Inspect the wiring for any loose or faulty connections on both the system and the dehumidifier. If the compressor starts but doesn't pump, or if the motor windings are shorted, the compressor may need replacement. Finally, if none of these are the cause, wait 3 minutes to account for any compressor delay time.
W
Wendy MccallAug 17, 2025
How to fix a Desert Aire Dehumidifier when the blower does not run?
- D
  dbarkerAug 17, 2025
  If your Desert Aire Dehumidifier blower isn't running, ensure the “Occupied” switch is closed. Check for a loss of main power by looking for tripped circuit breakers or blown fuses. Make sure the damper isn't stuck or frozen, preventing the actuator end switch from closing; free the damper or replace the actuator if defective. Also, check if the blower overload has tripped; if so, correct the cause and reset it. Finally, inspect the control wiring for any loose or incorrect connections on the system and controller.
S
Stacie WhiteSep 1, 2025
What to do if my Desert Aire TotalAire QS has low pressure alarms or evaporator coil icing?
- K
  kellyfranciscoSep 1, 2025
  If your Desert Aire Dehumidifier is experiencing low-pressure alarms (below 97 PSIG) or evaporator coil icing, there are several potential causes. First, check the hot-gas bypass valve to ensure it's properly set to maintain 30°F suction (97 PSIG); replace it if defective. Ensure sufficient evaporator airflow by verifying the coil is clean and the belts are tight. Re-evaluate the system charge if there is a lack of refrigerant. Check the refrigerant filter-drier for restrictions and replace it if necessary. Evaluate the expansion valve performance and replace it if defective. Lastly, inspect the refrigeration piping for restrictions, such as kinks in the tubing or debris in the distributor.
N
nicholas98Nov 23, 2025
Why does my Desert Aire TotalAire QS show high pressure alarms?
- M
  michaelrodriguezNov 23, 2025
  If your Desert Aire Dehumidifier is showing high pressure alarms or readings above the high-pressure trip set point, several factors could be responsible. For units with air-cooled condensers, ensure the coil is clean and there are no airflow restrictions. Check that the remote condenser blower is running and has power at the motor leads. For units with tower condensers, verify adequate water flow by installing a flow meter or circuit setter to ensure the correct flow rate. If the incoming water temperature is above 90°F, consult the factory for required flow rates. Purge the lines to eliminate excessive air in the condenser water lines, or install an air eliminator in the system piping. For 3-phase systems, reduce blower speed and reset the overload if it has tripped. Replace the contacto...