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Honeywell t8601d showing a square symbol error - in past this has indicated low refrigerant. Tech came out, said need to replace thermostat, as compressor would not start, but if manually connected wires, compressor would start. So, had thermostat replaced. Tech then said need refrigerant. Did the t8601d actually need to be replaced?

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There is a sensor that shuts the compressor down when the freon (refrigerant) is low. The tech probably "shorted" out this sensor. If the unit went on when he did this, the charge is low.

Posted on Jul 08, 2008

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