Gas and Oil Home Heating Furnaces - We Have Ice
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DavidLLL
06-01-03, 08:55 AM
There is ice on the inside unit coils and the outside unit will not turn off.
Yesterday we used hot water and bleach to flush the drain pipe. we also changed the filter.
This morning we noticed ice on the outside of the inside unit. We opened the unit and the ice melted. But now the outside unit will not shut off but the inside is still blowing cool.
Any ideas on what is wrong?
Yesterday we used hot water and bleach to flush the drain pipe. we also changed the filter.
This morning we noticed ice on the outside of the inside unit. We opened the unit and the ice melted. But now the outside unit will not shut off but the inside is still blowing cool.
Any ideas on what is wrong?
GregH
06-01-03, 09:43 AM
It would be helpfull to more about your equipment.
Read this: http://forum.doityourself.com/showthread.php?s=&threadid=122673
Your problem could be a stuck relay, defective thermostat, dirty indoor coil, low refrigerant, oversized system, dirty filter, dirty fan blades, defective fan motor, motor speed set too low, newly installed carpet covering returns or supplies, plugged refrigerant metering device, missing newspaper sucked into return grill, plugged drain !!! :D
Help us narrow it down.
Read this: http://forum.doityourself.com/showthread.php?s=&threadid=122673
Your problem could be a stuck relay, defective thermostat, dirty indoor coil, low refrigerant, oversized system, dirty filter, dirty fan blades, defective fan motor, motor speed set too low, newly installed carpet covering returns or supplies, plugged refrigerant metering device, missing newspaper sucked into return grill, plugged drain !!! :D
Help us narrow it down.
DavidLLL
06-01-03, 09:49 AM
Thanks for your answer - here's more info.
We live in Orlando (translation - HOT). We have a 2600/sf block house, one story.
We have a 13 yr. old Trane XE 900.
We live in Orlando (translation - HOT). We have a 2600/sf block house, one story.
We have a 13 yr. old Trane XE 900.
Ed Imeduc
06-01-03, 10:16 AM
like Gregh said there, it could be any of the above. I think call a tech to look at it. At 13 years its close to the end of its life.;) ED
GregH
06-01-03, 11:02 AM
David:
If the outdoor unit won't shut off then the contactor in the outdoor unit could be stuck closed, the indoor cooling relay if you have one could be stuck closed or the thermostat may be defective.
Try removing the wire on the Y connection at the thermostat and see what happens.
If the outdoor unit won't shut off then the contactor in the outdoor unit could be stuck closed, the indoor cooling relay if you have one could be stuck closed or the thermostat may be defective.
Try removing the wire on the Y connection at the thermostat and see what happens.
hvac4u
06-01-03, 01:53 PM
contactor stuck. this will cause the outdoor unit to not shut off and the freezing you see to occur
hvac01453
06-01-03, 07:30 PM
The unit is running nonstop from a welded contactor...Reason; Assuming the customer has enough sence to raise the thermostat to the highest setting to prevent the outdoor unit running or switches it off at the thermostat...Most people won't be that stupid! The air filter can't be clogged because they claim the coil was washed with bleach and hot water and a new air filter, low on freon frequenty has a high superheat till the coil freezes up but produces no cooling.