Question about Bunn 12 Cup, Digital Coffee Brewer with 3 Warmers

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Water will not heat, switch was turned on, thermostat dial was checked, unit was plugged in.

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Check the hi-limit thermostat on the boiler, then the thermostat inline from the element to the ready light.

Posted on Nov 12, 2009


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Heating and hot water only warm. I'turned dials up and altered thermostat but nothing helps and pressure dial keeps going into red HELP

Check your dip tube.

the higher up the dip tube is broken, the colder the water will be.

Knowing the make and model of heater will help.


Mar 09, 2015 | Water Water Heaters

1 Answer

Hot water heater will not turn on

You need to have the unit checked. Two possibilities come to mind if it is an electric water heater. 1. Burnt out heating element. 2. Failed thermostatic element switch located in the unit. Many water heaters have two elements.

Jan 15, 2015 | Water Water Heaters

1 Answer

After pot of coffee is brewed, the water in the reservoir seems to be overheating. It hisses and continues to come out of the sprayer, and there is a lot of steam coming from where I pour the water in. ...

This sounds like you need the thermostat replaced. Call bunn at 1 800 263 2256 and talk with parts. You need part number 35286.7000. On a VPS the thermostat is in the top of unit. Take the lid off and you will see it. It has a black dial and a silver probe wire coming from it to the top of the tank. It is fairly easy to remove and replace. Unplug the machine first. Unscrew the screw holding the old thermostat in. Then unhook the two wires from it. Take the rubber grommet out of the top of the tank and remove the thermostat and probe(the part that sits in tank) Put new thermostat in. Make sure the new rubber grommet is set at the red mark on the probe wire and then set the bulb into tank. Attach the two wires back onto the new thermostat(does not matter which wire goes where) and secure the new thermostat with the one screw. Make sure the black dial is turned all the way to the left and close the lid. Plug machine back in and wait for it to heat up again. If the water does not heat up enough turn the black dial all the way to the right.

Apr 06, 2013 | Bunn VPS Coffee Maker

1 Answer

Where is the temp sensor on a Hayward H300 ED2 pool heater

Hayward H series with ED option have electronic ignition with one or two dial thermostats. Along with thermostats, there are other temperature safety switches to shutdown the heater in case of over temperature, both for water temperature and for interior cabinet temperature.

CAUTION: Always turn off power, gas and the water pump whenever repairing your Hayward H series pool heater.

CAUTION: The Hayward H series pool heater is essentially a gas furnace. Only a qualified technician with proper training and tools should make repairs of your heater.

I'm assuming you are seeking the location for the thermostat sensor rather than the temperature switches, and I'm assuming you have dial-style thermostat(s). Incoming water temperature is measured at the inlet of the water heat exchanger. For most H series models, provision is made for two thermowells. If your unit has dual thermostats, both of these wells will have a bulb-style sensor inserted directly into the thermowells. If only one thermostat, then one of the thermowell ports will be sealed with a plug. The factory orientation of the water inlet and outlet is on the right side of the heater (as you face the front), but the installer has the option to locate the inlet/outlet on the left side with a field modification. Check your particular inlet/outlet orientation for either right or left side.

The heat exchanger thermowells and the thermostat sensors are located directly behind a two metal access plates that surrounds the heat exchanger inlet and outlet ports. Several Phillips-style screws secure the access plates to the heater cabinet. After several years of outside operation, these screws will likely be corroded and need some anti-rust oil to aid in their removal. When you have completed your examination of the thermowells and thermostat bulbs, I recommend applying some grease to the screws before re-assembly.

Once the access plates have been removed, the thermo-wells can be seen on the left side of the heat exchanger, which is the inlet side. Use the arrows on the top of the heat exchanger as a guide for inlet an outlet. The thermostat sensor bulb is directly inserted into the thermowell without any securing mechanism other than a copper or brass friction strip. I have seen some situations where a small amount of fiberglass has been inserted behind the bulb. The bulb should be inserted all the way into the thermowell until it touches the back. The copper or brass strip is used to keep the bulb in contact with the sides of the thermowell.

(For non-dial thermostat systems, the inlet water temperature measurement is made in the same location, but with a different device.)

CAUTION: The thermostat sensor is a liquid-filled thermo-expansion sensor. It relies on the thermo-expansion properties of a non-compressible fluid to operate the thermostat switch. Take care to not crush or kink the capillary tube between the sensor bulb and the dial thermostat switch.

If you remove the sensor bulb, take care to capture the copper/brass strip in order to use during re-insertion.

NOTE: Thermowells are sized to the particular thermostat sensor bulb. If you replace the thermostat sensor be sure to use the same size sensor bulb as the one being removed. If this is not possible, the thermowell may also need to be replaced.

Check your manual for verification of part numbers. The H series dial thermostat part number is CHXTSW1931. The matching thermowell is CHXTBW1930.

Sep 18, 2012 | Hayward H-series Electronic Gas Pool...

1 Answer

I have a Reliance 501 electric water heater. There are two panels. In the top panel is a red "reset" button. On two occasions this button has popped and turned off the unit. I have pushed the...

ECO reset button trips when thermostat senses high heat event over 150 degrees F, or when upper or lower thermostat is defective. There are other causes: if tank access covers and insulation are missing, and when element is shorted to ground in center of element so that element continues heating through one leg of 240V circuit after thermostat turns off.

Ordinary tank-type electric water heater is fully repairable by homeowner using generic parts from hardware store or home center.

1) Replace upper and lower thermostat for about $28, and if problem persists, then do troubleshoot shown in step 2 below.

2) Take 30 minutes and troubleshoot before replacing any parts.
Troubleshoot requires cheap multimeter from home center.
Install battery in multimeter.
When testing voltage, rotate multimeter dial to 240 or 250 or 277 VAC.
When testing continuity or elements, rotate multimeter dial to ohms (upside down horseshoe symbol is ohms)


2 Answers

Not working

HI, Troubleshooting an Aprilaire Humidifier

Aprilaire, a manufacturer of indoor air quality products including thermostats, air cleaners and dehumidifiers, also offers a line of whole house humidifiers. Installed in your existing heating and cooling system, humidity is produced by a supplied water source that flows over a water panel before being distributed throughout your air through the heating and cooling system. Issues you may need to troubleshoot with your Aprilaire humidifier include error messages and the unit producing too little or too much humidity.

Things You'll Need:

Replacement water panel

Turn down the control dial by one setting if condensation appears on your windows or walls.

Turn up the control dial by one setting if there is a lack of humidity, often indicated by dry skin or peeling wallpaper or paint.

Turn the control dial to "Test/Reset" if the humidifier does not run. Verify the heating and air conditioning unit blower is operating. If the heating and air conditioning unit is not operating or you are unable to resolve the issue contact a heating contractor.

Contact a heating contractor if you turn the control dial to "Off" and the humidifier continues to run.

Contact your Aprilaire dealer (see Resources) if you notice an error code on the display and the "Call Dealer for Service" light flashes.

Turn the control dial to "Off" and turn off the water supply if the yellow "Change Water Panel" light flashes. Lift the front panel off of the humidifier. Slide out the water panel. Insert a new water panel. Replace the front cover. Turn the control dial to "Test/Reset" until the "Humidifier On" light flashes. If you feel uncomfortable changing the water panel, contact a heating contractor.

Tips & Warnings

Purchase replacement water panels through your Aprilaire dealer or a heating contractor.

You can get parts from the link below:

Hope it helps.

Thanks for using fixya....

Nov 17, 2010 | Aprilaire 700 Humidifier

1 Answer

We are not getting heat.Does the unit make a

1. The unit may make a slight sound as it heats the water.
2. The product is wired ready to go other than the plug
3. Check to be sure that you have connected the plug correctly.
4. Check the receptacle that you are plugging into, to be sure it is energized
5. If you have a voltmeter, check the voltage where the plug connects to the tank.
6. Turn up the thermostat to the desired setting.
7. If no heat after an hour, then unit is defective

Apr 19, 2009 | Whirlpool Water Heaters

1 Answer

Honeywell Old T874D1512 dual heat/cool thermostat

I think I understand what you are saying....First, that switch marked On and Auto, is to control the blower fan only. So when you switch that to On, it turns on the blower, but not the actual heat. It sounds more like a problem at the furnace then at the thermostat.

Nov 17, 2008 | Honeywell Consumer Products Mechanical...

1 Answer

Bummer Bun

The pour-over type of Bunn coffee brewers require several pots of water to fill an empty tank.
1. While unplugged, pour in two and a half to three pots of clean water (put an empty pot underneath the brew basket). When the tank is full, water will come out of the brew basket.
2. Plug the unit in and wait for it to heat - about 5 to 7 minutes. These brewers are meant to be left plugged in all of the time to keep the tank water hot. You will probably heat some rumbling noises which is normal as the water heats.

If for some reason the water isn't hot after 10 minutes you will need to check the thermostat. Unplug the machine and take the screws out of the top. The thermostat has a little dial or a t-bar that you can turn. All the way left is off and all the way right is boiling. Turn this up about 90% of the way and put the top back on the machine and plug it in. If it gets hot, you are ready to brew. If it doesn't get hot, you may have blown the limit thermostat and will need to replace it.

The limit thermostat isn't the same as the thermostat. It is a ceramic and metal item that senses if the tank gets too hot from having the unit plugged in without any or enough water in it. It is inexpensive and relatively simple to change.

Nov 25, 2007 | Bunn -O-Matic Corp. 2 Warmer Auto Brewer...

2 Answers

Electric Heater Coils Always On

i suggest that the thermostat or the switch is at fault, contacts may be stuck. hope this helps

Jan 16, 2007 | Sanyo STW0923H2 Thru-Wall/Window Air...

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