Top 20 Bunn-O-Matic Coffee Brewer GRW8 Questions & Answers

Good morning to you
If the timer is electronic; hold down the set/mode button while you adjust the timer. If the time is adjusted by hand turn it the desired distance. OK in both instances.
enjoy your coffee

Bunn-O-Matic... | 69 views | 0 helpful votes

You need to see where it is leaking from because it may not be from the tank. If there is a overfloe cup and there is water in it the machine may be overheating. It may also be and inlet solenoid sticking open. Check if there is a overflow cup or if water is continuosly allowing water in. Hope this helps.

Bunn-O-Matic... | 43 views | 0 helpful votes

This is usually caused by the thermostat allowed the machine to boil the water. We offer an out-of-warranty exchange to get a new machine. If you will call customer service at 800-352-2866, we will be happy to assist you in getting a new machine.

Bunn-O-Matic... | 77 views | 0 helpful votes

The white neoprene piece from the seal kit is on the bottom, then place the metal washer in and the bolt on top of it. Then insert the black plastic piece on top and insert into the sump area and tighten it down with a screwdriver. If you need further assistance, please call customer service at 800-352-2866.

Bunn-O-Matic... | 139 views | 0 helpful votes

Sounds like you need a new thermostat.

Bunn-O-Matic... | 189 views | 0 helpful votes

Please contact customer service and a seal kit can be sent to you that should fix your leak-it is successful about 90-95% of the time.

Bunn-O-Matic... | 249 views | 0 helpful votes

Hello. Here is what could be happening. Your brew timer may be having a problem where it is re actuating on it's own, in which case it would need to be replaced, and re calibrated. The other possibility is that the start switch is making contact internally, and telling the brew timer to start again. Your unit does not show it having a level probe, so most likely it is not overflowing due to a flooding condition. After you brew, turn off the lower heat switch, this will remove power to the brew circuit, if the problem stops, then you know it is one of those 2 things, and I would try the start switch first, as it is a cheaper item to replace than the timer.
Here is a link to your brewer manual with part #'s etc..

Hope this helped, and thank you.

Bunn-O-Matic... | 140 views | 0 helpful votes

There is a brew timer on the left side of your machine near the heater switch. you need to remove an access panel to access it. turn this down a little, let the water heat up, then try another brew. Adjust as needed, brewing another pot between each setting.

Bunn-O-Matic... | 495 views | 1 helpful votes

you can always clean a coffeemaker with vinegar, but always pour in cold, so you can do it twice or more, but dont re-use the stuff you just used, wait till it's cold or just use some other.after use clean by let water through 2 or 3 times, (also only cold water)

Bunn-O-Matic... | 214 views | 1 helpful votes

You could have scale building up on the heating element and thermostat probe. try running a 1/3 white vinigar - 2/3 water mix into the brewer, let it heat up completely, then run several pots of clear water through the unit. keep pouring water through it until the vinigar smell is out of the water,

Bunn-O-Matic... | 155 views | 0 helpful votes

Couple of ideas.

Your weak coffee could be due to the machine not getting hot enough, which is usually caused by calcium scale buildup on the heating element (the "burner").

Try descaling with a citric-acid based cleaner, such as Dezcal or Durgol.

The second is the coffee your using is a weak blend. Try changing to a different coffee and see if the strength is better.

Bunn Coffee... | 31 views | 0 helpful votes

This sounds like the light flickering rather than a faulty connection. You can check for a bad connection by tuning a nearby radio receiver to no station in the AM band. If there is a bad connection causing this you'll hear the sparking (in time with the flickering) on the radio.
Flickering is a common effect seen with neon indicator lights when they age and does not affect the switch function at all, so can be safely ignored.

Bunn Coffee... | 27 views | 0 helpful votes

Underneath the warming plate is a element assembly that will have 1 or 2 thermal fuses and a temp sensor. If any of these have faulted that condition will arise.
I suspect that the temperature sensor is 'sticking' in the open position. If you remove the bottom cover (while unplugged of course) and lightly tap the sensor with your screwdriver it may remedy the issue for awhile but the initial cause of the problem will still exist. If the brewer is worth it you can replace the sensor otherwise it may just be cheaper to recycle it.

Bunn Coffee... | 46 views | 0 helpful votes

A model number would be nice but since all (drip) coffee makers are generally the same in principle I'd wager it's your temperature sensor (underneath the heating plate) or when you plugged it in voltage escaped through the switch causing the unit to be 'on'. Think of a coffee maker like the first 1/2 of a steam engine. Water from the reservoir gets converted into steam by a burner (also warms the heating plate for the carafe) and instead of the steam driving components it gets condensed above the coffee grounds. Without that temperature sensor the burner would be going 'full blast' all the time and burn your coffee which is why a broken sensor will cause a 'no heat at all' issue while a failing one can give false signals to the control board. I hope this narrows down your issue and good luck!

Bunn Coffee... | 36 views | 0 helpful votes

Google (bunn)(mcr0002182)(manual) without parens.

Bunn Coffee... | 39 views | 0 helpful votes

I can only suspect the tank has rusted thru. sadly the do not have replacement tanks that we the consumer can replace . timeto bin it and buy new or different type unit

Bunn Coffee... | 1,170 views | 0 helpful votes

Clean a Bunn coffee maker once every three months if you have hard water. ... Unplug the Bunn coffee maker from its power source. Verify the brew funnel is in place in the machine, and set the decanter in the unit as if you were going to make coffee. Add 1 quart of white distilled vinegar to the top of the brewer.

Bunn Coffee... | 58 views | 0 helpful votes

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