20 Most Recent Kenmore 76129 Air Conditioner Questions & Answers

AC has a relay, it sounds like it failed on ya. If the unit was on all the time, was it that hot where you were or do you mean switched from AC to fan on all day? From what you said, it sounds like the unit burned its relay out for overheating, meaning thermostat may have originally failed keeping unit on until relay popped. Careful of fire hazard.

would be on line that plugs in.

switch issue.

sounds like motor bad.

There is no reset button on this unit that I have located. I don't think cleaning the filter will help since you could just set the unit to run without the filter.

I have two of these units (actually it is my sister and brother in law's) but they come to me to fix stuff.
Last year they came to me with this unit not working. No indication of power on the display. I diagnosed it down to the PWB Assmebly, Main. I believe they are referring to it as a Power printed circuit board (part #6871A20271A). The new board worked for about 4 months and then quit in the same manner. Also, the second unit quit in the same manner also indicating the circuit board is bad.
I don't want to throw a board at it till I know why they are burning out. Also, want to try to diagnose the board to component level ($33.28/board last year). Let me know if this helps if you have the same symptoms?
You can replace the board but my experience says it will only last for a short time till we find the real cause (Sears must know this problem exist).

SORRY TO SAY YOUR CONTROL BOARD MAYBE FAULTY IF U UNPLUGGED FOR ABOUT 3 MINS AN STILL DOESNT RESET ITS A BAD CONTROL

When a fan malfunctions, the problem is usually loose or dirty blades. If the fan won't operate or if it's noisy, cleaning and tightening will usually fix it. Here's how to repair a room air conditioner's fan:
What You'll Need
You'll want to have these tools on hand to repair a room air conditioner's fan:

• Vacuum
• Soft cloth
• Screwdriver or Allen wrench
• Long-blade screwdriver
• Wrench 20-weight nondetergent motor oil
• Volt-ohmmeter or multimeter

Step 1: Open cabinet and locate fan.
Step 2: Clean away any debris with vacuum and soft cloth.
Step 3: Check fan blade on motor shaft for looseness. Blade is fastened to shaft with setscrew at hub of blade.
Tighten setscrew with screwdriver or Allen wrench. If air conditioner has round vent fan, tighten fan on motor shaft by inserting long-blade screwdriver through port in fan.
Fan is installed in its h­ousing with bolts, and vibration can loosen these fasteners. Then tighten them with wrench.
Step 4: If fan has oil ports, apply several drops of 20-weight nondetergent motor oil (not all-purpose oil) to each port at beginning of cooling season.
Step 5: If you suspect fan motor is faulty, test it with VOM set to RX1 scale. Disconnect terminal wires from terminals, and clip probes of VOM to wires.
If meter reads between about 3 and 30 ohms, motor is functioning properly. If meter reads either zero or an extremely high number, replace motor.
To remove the fan motor, remove the fan, the power wires, and several mounting bolts. Install the new motor with the reverse procedure .

This is a good question to ask. 1. if a unit trippes a breaker its for 2 reasons. A. to protect the wiring from catching fire . B. to protect you from electrical contact with ashort condition. Before you buy a new unit I would recommend you fix the wiring as bad siring is ******* the unit and costly to operate due to load resistance. Also replace any breakers that are unsed to support this unit. Brealers go bad esp if they have been problematic in the past. I am not certain as to the size of the unit you have now but if it cooled the room well then replace it with a match or a bit bigger unit.
As to why it tripps the breaker now? could be a couple thing Bad wiring like you state. weak breakers as I pointed out. or a bad compressor or fans. Or in my view its most like a combo of all the above. Hope this helps let me know.. Jon

Hi,

Here is a tip about troubleshooting your air conditioner...
There are many things that can cause your air conditioner not to cool...

AirConditioner Trouble - Review the Possibilities

heatman101

IT TAKES LONGER THAN 30 SECONDS. MORE LIKE 5 MIN AND ONCE PLUGGED BACK IN IT CAN TAKE 2MIN OR MORE FOR IT TO COME BACK ON. ITS SO HOT OUT YOU NEED TO RUN IT ON LOW.. YA YA I KNOW.. BUT I ALSO KNOW AC ! THE WAIST KOOL FROM THE EVAPORATOR COOLS THE COMPRESSOR ! YOUR CHOICE IS SOME COOL OR NONE . JAY FLORIDA

Hello
Is there a reset button located near the plug? If so reset it.

Check your circut breaker for the outlet its plugged into also.

If your using a remote to start this unit check that the battery is good in the remote,it may only work with a remote.

Hello,

This is still worth repairing, perhaps this could just be problem of dust getting into the vent, i advice you that yo get a pressure air pump to vacuum the surface and all parts of the unit, if this did not solve the problem, you can get a repair person to help look into the problem, believe you me me, this is minor problem that can be fix, its better off condemning the unit and buying another one.

I advice you try fix it first before thinking of getting a replacement for it.

Take care.

My educated guess is this would be a relay on the (or one of the) circuit boards. If you can access the internals parts try tapping on the boards which might allow the relay to release. A relay controls large amounts of current with small amounts of current (this means the controls can be small, working with small currents, also low voltages to control the relay on/off function.

Most likely the circuit board, part number 6871A20271A. I replaced this board last summer and it lasted about 4 months ($33/board). I am now trying to find out why the boards are self destructing.
Units belong to my relatives, they own two of them and they are both not functioning, I expect the same problem with the two of them.