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Evaporator and line freeze up on new AS central air cond system.

Had a new AS system installed 3 days ago. Cooling has gradually deteriorated to where no air is coming out the registers even with the fan on at the thermostat. Line from evaporator and evap coil is covered with ice. What causes this?

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Freon is low freezing up the coil not allowing air from the fan to pass thru. Either the system has a leak or the correct amount wasn't put in the first place.

Posted on Jun 16, 2009

  • Chip Bauer Jun 17, 2009

    I thought about it and the problem could also be not enough return air being pulled back caused by return vents to small or not enough of them that will also freeze everything up also.

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Most likely the unit is low on refrigerant they may have a leak at one of the connections. when they installed the a/c did they change your filter? The system could have moisture in it causing the expansion valve to restrict. Your install should be under warranty. I would call the company that installed it.

Posted on Jun 16, 2009

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