Question about GE Zoneline AZ55H07D Air Conditioner

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Loud Popping Sounds

Our Ge Zoneline Unit AZ55H15DAB is two years old. This fall, it had started making loud popping sounds and rattling noises when the compressor clicks on. The popping sounds are louder as the temperature becomes colder. The AC part of this unit worked fine this summer. The manual says that the popping sound is water hitteng the fan blades however it never happened for two winters. Anyone have an answer?

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Solution - Check the internal cabling for short circuit from damage of insulation layer. Especially the electronic control board housing the switches. Replace the worn cables or tape them up with insulation tape.
Fault detection- Am not familiar with your model. But I had the same fault with a 1.5 ton window aircon. When I turned on the unit in the dark of night I could discern a spark inside the aircon unit somewhere in the switch control area whenever there is the loud popping sound. Here is the culprit - shorted control cables running form the electronics board to the compressor. In my case these were wires with a sheathing conductor exposed probably gnawed through by rodents during winter when the aircon was off. What happens is whenever there is a signal voltage sent from the control panel to the power relays, the shorted cables spark giving a sharp pop sound.

Posted on Jul 24, 2013

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If this is a heat pump system it is possible that your fan blade is hitting ice on your condenser coil.

Posted on Nov 18, 2007

  • Paul Williams
    Paul Williams Oct 14, 2014

    Could also be that the water drain is plugged this year so the fan is hitting water that normally would drain away.

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