Marvair AVPA 36 series User Manual (English)

Questions and Answers:

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Thomas ThompsonAug 7, 2025
What to do if my Marvair Air Conditioner unit does not run?
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  lesliemortonAug 7, 2025
  If your Marvair Air Conditioner unit isn't running, start by checking the power supply to ensure it has adequate phase and voltage. Inspect the wiring to the unit and any external breakers or fuses. Also, check the internal circuit protection devices for continuity. Verify the operation of the wall-mounted thermostat and reset the pressure switch if the unit is off on a high or low pressure limit. Finally, check for loose wiring and component failures.
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Stacey SmithAug 12, 2025
Why does my Marvair Air Conditioner run continuously but cooling is insufficient?
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  Douglas KellerAug 12, 2025
  Your Marvair Air Conditioner might run for long periods with insufficient cooling due to several reasons. First, check the air filters for dirt and ensure proper blower operation, removing any airflow restrictions. A low refrigerant charge could also be the cause, so check for proper charge and potential leaks. Inspect internal components, especially the compressor, for proper operation. Finally, consider whether the unit is undersized for the job, and if so, consider adding additional units for greater capacity.
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scott28Aug 17, 2025
What to do if my Marvair AVPA 36 Air Conditioner blows fuses or trips the circuit breaker?
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  Shannon AndradeAug 17, 2025
  If your Marvair Air Conditioner is blowing fuses or tripping the circuit breaker, it could be due to several reasons. Check the electrical requirements and correct as necessary. Inspect the field wiring for any shorts, loose connections, or improper connections. Also, check the unit's internal wiring, referring to the wiring and schematic diagrams, and test components, especially the compressor, for shorts. Finally, check if there is excessively high or low supply voltage or phase loss.
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Matthew MyersAug 22, 2025
How to troubleshoot a Marvair Air Conditioner that cycles on high/low pressure limit?
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  Melissa MaysAug 22, 2025
  To troubleshoot a Marvair Air Conditioner cycling on high/low pressure limit, begin by checking the blower assembly for proper operation and look for airflow restrictions, such as a dirty air filter. Inspect the blower motor and condenser fan. Also, check for blockages or restrictions in the refrigerant circuit, especially the filter drier and capillary tube assembly. If the unit was recently serviced, refrigerant overcharge could be the problem, and you should evacuate and recharge to factory specifications. Finally, check the limit cutout pressures of the pressure control; it should actuate at approximately 35 PSIG (low pressure) and 400 PSIG (high pressure).
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Robin LeeAug 27, 2025
Why is there water on the floor near my Marvair AVPA 36?
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  Michael ParkerAug 27, 2025
  If you find water on the floor near your Marvair Air Conditioner, it could be due to an obstruction in the condensate line, so check for any clogs or restrictions. Alternatively, there might be an obstruction or leak in the condensate pan, so inspect the pan for leaks or blockages. Lastly, ensure that the unit is level.
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William SimmonsAug 31, 2025
What causes no space heating or reduced heating in a Marvair AVPA 36 Air Conditioner?
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  Amanda RussoAug 31, 2025
  If your Marvair Air Conditioner (equipped with resistance elements) has no space heating or reduced heating, it could be due to defective heating elements; check the resistance elements for continuity. Also, check the continuity across the thermal limit switch, as the thermal limit may be open. Lastly, a defective heater contactor could be the cause; check the relay for proper operation and replace it if defective.