Troubleshooting your coffee maker before you've had your cup of coffee can be frustrating. Let's dig into this troubleshooting guide to get your morning cup brewing and start the day off right.
While this guide is focused first on automatic drip coffee makers, a good starting procedure for any device is to follow proper maintenance and cleaning practices — follow this coffee maker cleaning guide and replace old filters.
If using soft water, clean your machine with a 1:1 vinegar and water solution every 3 months; with hard water, every 1 month.
There Is No Power
Be sure that the coffee pot is switched on and has access to power. The outlet that you are using may not be working. Also, be sure to check that the cord is completely plugged into the wall and there are no faults in the wiring.
The Auto Shut-Off Has Been Activated
When unused for a long period of time, the heating console will shut off automatically. There is no way to deactivate this function. Remove the previous pot and re-brew new coffee or reheat coffee separately.
Faulty Warming Plate
There could be an issue with the warming plate. If everything else is working and you have tried all of the above options, the warming plate may need to be replaced.
You can test the heating element by disconnecting the power, and removing the bottom and continuity testing the element. If your heater reads outside of 0-50Ω, then electricity cannot travel trough the element and it must be replaced.
Broken Thermostat or Blown Fuse
The thermostat is a safety switch which electronically energizes the heating element while there's water in the tank, and disconnects or opens the circuit after the water is gone and it's only heating itself. Unplug your machine, grab a multimeter, and open the bottom cover. If the thermostat continuity tests at room test between 0-1 Ohm (Ω) then it doesn't need replacing.
Find and test the inline fuse. The fuse is a safety device designed to fail in the event of a runaway thermostat. If the fuse tests outside of 0-1Ω, replace the fuse.