Air Conditioner question ???
I just installed air in my 35 Sonic. I'm having a problem where the aluminum fins on the retun side of the unit are freezing solid with ice after a couple hours of running.
Does anyone know what would cause this? a buddy of mine re-charged the unit to make shure it was good on freon. he also verified i had enough return flow getting to the unit. any ideas?? |
Re: Air Conditioner question ???
could be a number of things....low charge , low airflow(restricted by something or dirty) , low return temp, or a combination of the above....after a few hours what is the temp of the cabin?
why did he check the charge? |
Re: Air Conditioner question ???
Maybe a recycling switch. letting the the compressor not cut off making the condenser freeze up?
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Re: Air Conditioner question ???
Originally Posted by NASTY HABIT
could be a number of things....low charge , low airflow(restricted by something or dirty) , low return temp, or a combination of the above....after a few hours what is the temp of the cabin?
why did he check the charge? |
Re: Air Conditioner question ???
What kind of refrigerant is this system using and what were the pressures (both high and low side)?
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Re: Air Conditioner question ???
the refrigerant is R22. I forget what the high side was, but the low side was 55 and he charged it up to 68. This is a 7k btu Marine Air unit.
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Re: Air Conditioner question ???
Your talking like this is a split system.....or is it a package unit.
have any pics? |
Re: Air Conditioner question ???
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Re: Air Conditioner question ???
Usually restricted air flow. Either clogged with dust/debris on the intake or kinked hose on the outlet. Also check to see if the fan is running at high speed.
Gary |
Re: Air Conditioner question ???
Sounds kind of odd to have the evaporator freeze up with a suction pressure of 68#. A 68# suction gives you a 40 degree evaporator coil. I can understand the 55# freezing up, that would be a 30 degree coil and moisture in the air would instantly freeze to the coil. Your suction pressure is dropping down below 58# for some reason. Are you sure that you do not have a refrigerant leak and you have lost some refrigerant again. How long does it run before it starts to freeze up. Does the cabin ever start to cool down?
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