Question about Fujitsu 36CS Air Conditioner

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One of my indoor air handlers makes a lot of condensation and it's not even on. I was told that it might be the metering device not closing to 80% or it's not wired properly. For now the customer is keeping the indoor fan on and it;s not leaking. I need some help. -Steve Long

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If it's not running, the pressures would equalize over a matter of a few minutes. While your still flashing liquid in the metering device, it would not have a continuous supply of refrigerant. Even if the TXV was closed 80%, you would freeze the top of your coil because as soon as it meters through the expantion valve, your refrigeration saturation would drop off the chart and you woulf freeze as soon as it's metered. You need to got to the unit and amp out the compressor. Isolate it. You want nothing else but the power to the compressor. You could have a welded conactor. I have installed Fujitsu units and the comressors run very quite. Any noise around will over ride the sound of the compressor. Let me know what you find out.

Posted on Sep 28, 2010


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