2007-06-24 02:25:11 · 4 answers · asked by Matthew M 1 in Home & Garden ➔ Maintenance & Repairs
Outdoor coil will frost over during heating cycle, will reverse and defrost every 90 minutes of operation. If you get a large accumulation of ice, check air movement across coils; are they clean, is the fan operating properly?
If your indoor coil is freezing during cooling mode, check filter, clean the indoor coil, verify fan is running in high speed.
Rarely do they need refrigerant, most often it is an airflow issue. Refrigerant loss is last item to check, will need a pro to verify.
2007-06-24 04:30:05 · answer #1 · answered by OrakTheBold 7 · 1⤊ 0⤋
When the heat pump is in heating mode (warming your house), the outside coil will get very cold. If the outside air is below freeezing, any water vapor in the air will condense and freeze to the outside coil of the heat pump.
Most heat pumps do not run when the outside temp is below freezing and some have electric heating elements that will warm the coil periodically to melt off any ice.
If you are referring to the inside coil (the A coil), the only reasons it would freeze is:
A) your outside coil and inside coils are mismatched.
B) your air handler is not moving enough air across the A coil.
Good Luck!
2007-06-24 02:54:21 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Is the inside coil clean??? Are the filters on the return air duct clean???
These are the 2 most common problems....
2007-06-24 03:56:05 · answer #3 · answered by S. E. Charles 3 · 0⤊ 0⤋
freezing coils is always low coolant.
2007-06-24 02:33:06 · answer #4 · answered by David B 6 · 0⤊ 4⤋