Question about American Standard Heating & Cooling
About 6months ago inside unit was not cooling and ice built up inside unit, technician cleaned inside unit and it worked for another 6 months, now the problem is back all over again. Do I need a new unit?
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Posted on Jan 02, 2017
Hi, Reduced air flow, low on freon or being continuously run during cooler weather such as at night. Some people turn their thermostat on 60 thinking that it will help get it cooler faster. They freeze up at night and don't get a chance to thaw during the day. It needs set no lower than 75 or so. The evaporator may be dirty. Don't know a lot about your particular unit but if the outside unit has the compressor and refrigerant lines running to it, The large refrigerant line should sweat all the way to the compressor if its fully charged. Please rate me if I have helped. Good luck kstfas
Posted on Aug 28, 2007
This is njormally an issue with oversizing but this should have manifested itself the 1st time you used it, unless you have relocated the unit. If you have reinstalled it in its original location and if you have cleaned the coils as required, then you have a low freon issue that only a professional should resolve.
Tip: If the ice is building up in 1 small area and not evenly across the complete evaporator coil, then you definitely are low on freon.
Posted on Jun 11, 2008
Yes, if the filters are clean, the coils are clean, and it is still freezing up in cooling mode, then it is low on refridgerant.
Posted on Jan 14, 2009
eventually ice freezing evaporator occured two factor you have
dirty fin evaporator and undercharge system.
1. undercharge can easily detected using clamp
ammeter clamp on one line of evaporator while running
read the amper the compare this to yuor service
manual the rated current of the compressor.
2.if the reading current is below the rared current on
manual or there is tag on the body of unit specified
rated current.your unit need to recharge.
if has the same current no change at all freon is still
good, this only need cleaning of eveporator fin.
clean this by pressurise water to purge out all debris
particle on fin tube of evaporator.
cracking sound usally made by blwer or fan
misalignement or distorted bearing blower .
regards have anice day dont forget to rate me.
Posted on Apr 10, 2009
If you already had the coils and filter cleaned and the blower is OK, that only leaves the refrigerant charge.
You are probably low on refrigerant.
Posted on Aug 25, 2009
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