Recessed Lights Cycle On And Off
Click image to enlarge.
Q I just upgraded the attic insulation to R-60 in my new Home. I installed IC recessed lights (rated to have insulation around them), but they go off and on when they get warm. The electrician suggested removing the insulation so they don’t overheat. There must be a better way to have your lights and insulate too.
A There is no need to compromise your insulation to keep your lights on. The recessed light fixtures you bought, called IC rated, are designed so that insulation can be installed in direct contact with them. These fixtures have a high-temperature cutoff switch that turns off the lamp if excessive heat builds up. That’s why they’re cycling on and off.
To resolve the problem: First, check the information on the fixture label (bottom photo) to make sure the bulb is an acceptable type and wattage. Second, check the fixture label to make sure the trim is compatible with the housing (bottom photo). The wrong trim can trap too much heat inside the fixture housing. Look for a part number on both the housing and the trim and call a supplier to confirm their compatibility. Third, if the housing allows the bulb to be adjusted up and down, move the bulb down. Fourth, the thermal protector might be defective and require replacement. This is a tough one to diagnose. If you have several lights turning on and off, the protectors are probably OK. A single problem light might well have a faulty protector. Call in a licensed electrician to fix it.
Still stumped? Try this solution that I’ve used several times. Build an airtight box around the problem light (top photo). You have to do it from within the attic (not a pleasant working environment!). Cut the box from 2-in. thick rigid extruded foam board, then glue and screw the joints. Caulk all seams and penetrations from either inside or outside the box. It’s important to make the box airtight to keep warm air from escaping into the attic. It provides air space around the fixture to help prevent overheating, yet interior air cannot get into the attic, and your insulation is still intact.
收藏至：
 |
Up |  |
