Educate Me Section
Educate Me/Home
James A/C Co./Home
Diagnosis of problems
Understanding refrigeration
Homeowner helpful hints
Filtration & More
Understanding thermostats
Outside units and safety
Indoor Coils and drains
Links & Search
Air Purification Products
Honeywell® Thermostats
Humidifiers
Unit Heaters
HVACR TOOLS
Accessories
James A/C Co.
serving Do-It-Yourselfers since 1990.
Satisfying every customer....one at a time!
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Call toll free 1-866-584-0355 or 1-903-759-2160 fax 903-759-4605
309 Patriot Circle, Longview, TX 75604-2240
THINGS TO CHECK IF THE INDOOR UNIT HAS WATER DRIPPING:
- Cooling coil drain pan clogged with algae.
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This is a typical coil pan that has had the coil removed from it. You need not do this removal to clear the algae. A type of
algae grows really well in the cool, dark, damp conditions inside the cooling coil drain pans. If the coil runs extra cool and
the filtration is poor, the algae seems to grow more. Remove the front door panel of the evaporator coil and clean out as much
of it as you can and then treat the pan with algaecide. You can get the tablet form of it from a local dealer. It works fairly
well. |
- Drain line from coil to outside or to sewer drain clogged.
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The most common stoppage of the drain line from the coil to the sewer is the trap. Heavy particles will settle to the bottom
and eventually will clog. Just simply clean it out occasionally. Run a wire, flush with water, or blow air through it to clear the
clog.
TIP
One of the very best ways to clear the drain line and the sewer line it dumps into is to pour
scalding hot water into it. Use a liberal amount. |
Look for the presence of two traps inline. An air trap will sooner or later happen and it will be as though the line is clogged.
If you find a sag in the tubing that makes the equivalent of a trap plus a real trap or any multiple combination of either of these
in the same line it is a problem. Make sure the line drains consistently downward and only has one trap.
Any time the drain is attached at a point on the system where it is on the suction side of the air flow, it must have a trap or
sewer gasses may come up into the system and become very dangerous. This condition of suction can also cause the water to back-up
in the line and cause an overflow of the pan. Trap it if it doesn't have one.
- If the evaporator iced and is thawing, it may run water from nearly any place.
The system may have a dirty filter, restriction of air flow, be low on refrigerant, or have numerous causes for the icing.
Refer to the menu and read the Refrigerants and Charging section where it is explained in great detail.
- Sewer drain clogs may cause the condensation water from the air conditioner to back up and
overflow. Use the hot water tip above to clear it.
- If the drain pan is rusted out, it is a serious problem and you will have to replace the cooling
coil and pan most likely. There are no repairs for a rusted pan.
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