Quest Engineering 105 Dual User Manual (English)

Other manuals for Quest Engineering 105 Dual

Installation, Operation And Maintenance Instructions18 pages

Questions and Answers:

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Whitney Gross MDAug 10, 2025
What to do if my Quest Engineering 105 Dual is not dehumidifying, and neither the blower nor compressor runs?
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  sleeAug 10, 2025
  If your Quest Engineering Dehumidifier isn't dehumidifying, and neither the blower nor the compressor runs when the fan switch is on AUTO, start by checking the unit itself. Possible causes include the unit being unplugged, a lack of power to the outlet, or a tripped circuit breaker. Additionally, verify that the humidity control is properly set, and inspect the internal wiring for loose connections. If the humidity control is defective, consider replacing it.
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Randy SmithAug 15, 2025
What to do if my Quest Engineering 105 Dual Dehumidifier does not work properly?
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  Amber TaylorAug 15, 2025
  If your Quest Engineering Dehumidifier isn't working properly, please check the following: - Is the unit unplugged? - Is power to the outlet on (check switch, if applicable)? - Is the circuit breaker tripped? - Is the humidity control set (turn to “ON”)? - Is airflow restricted (check air filter and grill)?
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Heather RogersAug 20, 2025
What to do if my Quest Engineering 105 Dual's blower runs, but the compressor cycles on and off?
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  Laura BentonAug 20, 2025
  If the blower runs but the compressor cycles on and off in your Quest Engineering Dehumidifier, it might be due to low ambient temperature or humidity, causing the unit to cycle through defrost mode; in this case, adjust the ambient temperature or humidity. Other potential causes include a defective defrost thermostat (replace it), a defective compressor overload (replace it), or a defective compressor (replace it).
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Albert IrwinAug 26, 2025
Why is my Quest Engineering 105 Dual evaporator coil frosted continuously?
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  Anthony ConradAug 26, 2025
  If the evaporator coil in your Quest Engineering Dehumidifier is continuously frosted and the dehumidifying capacity is low, it could be due to a dirty air filter or restricted airflow; clean or replace the air filter. Another potential cause is a loose or defective defrost thermostat; check, secure, or replace it. Finally, a low refrigerant charge could also be the culprit; check the refrigerant charge.
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Nicholas RogersAug 30, 2025
What to do if my Quest Engineering 105 Dual's blower does not run, but the compressor cycles on and off?
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  huffmanmarkAug 30, 2025
  If the blower doesn't run but the compressor cycles on and off in your Quest Engineering Dehumidifier, inspect the blower circuit connections for looseness. Check for any obstruction preventing impeller rotation and remove it. The blower itself or the blower switch might be defective and need replacement.
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Helen WilsonSep 4, 2025
What to do if my Quest Engineering 105 Dual has no dehumidification but the blower runs?
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  Melissa RodriguezSep 4, 2025
  If your Quest Engineering Dehumidifier isn't dehumidifying, but the blower runs when the fan switch is on AUTO and the humidity control is turned to ON, check the ambient temperature, as a defrost thermostat might be open if the temperature is too low. Inspect the compressor circuit for loose connections. Other possible issues include a defective compressor overload (replace it) or a defective compressor or compressor run capacitor (replace either).