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Check For Mice and Other Pests
Your condenser unit has an access panel behind where you’ll find the wiring and connections. Because this is an outdoor unit, it’s often an appealing residence for critters. After shutting off power at the breaker, remove the access panel and check for broken or chewed wires. Replace them as needed.
22/23
Check Fuses in the Disconnect Block
These fuses are typically located in a box mounted to the house near the condenser. Set your multimeter to the lowest Ohms value and touch the red and black leads to opposite ends of each fuse. If you get a numerical reading, the fuse is good. But a zero, a minus symbol or an infinity symbol (∞) indicates a blown fuse.
Take your old fuses along to the home center to verify that the new ones match. Replacing a fuse can get you up and running again quickly. But if your unit regularly blows fuses, there’s something else wrong with your system.
23/23
Investigate Your A/C’s Condenser Unit
Is your A/C blowing air, but not cold air? Does the condenser seem louder than usual? If it’s working too hard, it may just shut off. The condenser coil, located inside the outdoor unit, is probably dirty.
To clean the condenser coil, spray it off. Don’t use high pressure. Put your thumb over the end of the garden hose or use a sprayer nozzle. More pressure than that can bend the fins.
The cleaning schedule for condenser coils, like the timing of filter changes, depends on environmental conditions. Cottonwood seeds can blanket your condenser coil in a day. Make a habit of cleaning the coil regularly.
