Question about DeLonghi Trane 5t Rooftop Air Conditioner Ycy060g1m0ad

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Recharge air condition

I have a heat pump central air unit by "Trane". The pipe going into the house has ice forming on it. Vary little air is coming out of the vents in the house. I'm told that it may need to be recharged (Freon or equiv.).My question is can I charge the unit myself and how?

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  • Samuel Charles Spriggs May 11, 2010

    First, are you saying there is no air blowing through the system ducting in the house? if the inside fan is not running this would have nothing to do with refrigerant.



    Secondly, aren't the refrigerant lines insulated?



    Thirdly, I would not suggest trying to recharge the unit yourself for a host of reasons.

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Hi,

if little air is coming out there maybe a problem in the blower or filters. But if there is air and its not that cold or warm then its a refrigerant problem or the lack of.

A simple check for lack of refrigerant would be to look at the refrigerant pipes on your rooftop unit and see if its freezing.

Altghough you can charge the unit by yourself, I would suggest to have it done by technicians because you would need to know how much refrigerant to put in there; what's the correct pressure; system integrity. You'll get your money's worth since it would not just be recharging but also system check.

I hope this helps.

Posted on May 27, 2009

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Hello,

If you have solid ice build up on the "big" pipe (suction line) and very little air coming out of the vents, it's more an air flow problem; Inside fan not working, dirty coil inside (evaporator) or block filter. Open the cabinet inside and take a look there first.

This should be easy to fix; if the filter is dirty, replace it. should be done every month anyway.

If the coil is dirty, depending on access there's a 50/50 chance you can clean it you're self. If you can't you will have to call a technician who will pump all the freon in the outside unit, disconnect the coil, clean it & reinstall it, that should run you $200 to $300

You say there is a little air coming out so the fan is probably working, but if not, you will to find out why the fan is not running. That's electrical, could as easy as the thermostat is not turning the fan on to replacing the fan it self.

It is possible to have frost coming back if you are undercharge (low on freon) But the conditions have to be just right. A Journeyman mechanical carrying an EPA license working under A license contractor is the minimum you need to be able to buy freon since the 90's. that's legal of coarse.

To charge a system you also need a set of gauges and you need to know the working pressure of the system depending of the freon inside.

I think you only have a block filter or a dirty evaporator, possibly a collapse duct.

Good luck

Benge

Posted on May 27, 2009

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