My unit is cycling on and off every 2 minutes or so.

YOUR UNIT WKL 4000 CONTROL BOARD HAS THE FOLLOWING FEATURE ON START UP UNIT WILL RUN FOR 30 MINUTES IF IT DOENST BRING THE TEMPERATURE IN THE CELLAR BELOW 70DEGREES IN THAT TIME IT WILL SHUT OFF AND DISPLAY E1, YOU NEED TO UNPLUG UNIT FOR 15 MINUTES(NO LESS THAN THAT) AND THEN PLUG IN AGAIN IT WILL RUN AGAIN FOR ANOTHER 30 MINUTES ABD IF IT DOESNT BRING THE TEMPERATURE BELOW 70 IT WILL SHUT OFF AGAIN.YOU WILL HAVE TO REPEAT THIS CYCLE TILL IT GOES BELOW 70DEGREES (MOST CUSTOMERS WILL HAVE TO DO THIS CYCLE TWICE).ONCE THE UNIT BRINGS THE TEMPERATURE BELOW 70 IT WILL RUN NON STOP TILL IT MEET THE SET COOL POINT.IF YOU REPEAT THIS STEP SEVERAL TIMES AND THE UNIT NEVER BRING THE TEMP BELOW 70 DEGREES THERE HAS TO BE SOMETHING ELSE GOING ON, LIKE A REFRIGERANT LEAK.CHECK THIS LINK FOR THE INSTRUCTIONS THAT EXPLAIN THE FEATURE I TALKED ABOUT AND OTHERS ON THE CONTROL LER OF YOUR UNIT(SENTRY III)http://www.breezaire.com/downloads/sentrymanual.PDF

How old is the fridge? Newer units will run more frequently and make "running" noises.

Check to make sure there are no obstructions blocking the washer heads from spinning.

Nothing's wrong with your gun or machine. Your unit has a duty cycle of 20 percent at 90 amps, meaning that it will work (weld) great for 2 straight minutes and then it needs to cool down for 8 minutes. The duty cycle it is measure in 10 minutes lapses.
All you need to do is to let it cool down, and start again. That's all.

It sounds like your unit is low on refrigerant. Have it checked and refilled if necessary.

If the burner comes on and then after a while the burner turns off for a short time, minute or less then starts again, you might have a problem with your fan motor or a very dirty air filter. I could be going off on high limit and then resetting and working that squence of operation. Also if your unit has been worked on recently, a larger then needed nozzel could have been installed and the unit fan can not cool the heat exchanger quick enough.

I would check for a faulty high limit thermostat. This is a small round device mounted on a metal plate and attached to the internal ductwork. It's recommended that the thermal fuse be replaced at the same time and may come as a set from a parts supplier. I will attach a photo of a fuse/thermostat for reference. Remember to disconnect the dryer from power source before attempting any repair. Sorry for your trouble and I hope this helped. Best wishes.

check you capicitor

Check the voltage on the outlet,make sure it is 115v -- 122volts max, any less will cause it shut off, make sure the polarity off the outlet is correct and it is grounded,check all of your wiring connections, if all this is ok replace unit with a different unit or different supplier of unit

It appears that you may have controller issues since operation is haywire. Try to reset the electronics to factory defaults. If this remedy does not do it then.........

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