The heating coils may be calcified. With the machine off- pour some vinegar into the water tank. Let it sit over night. then pour clean water in and run it at least 3 times to flush out the vinegar.
SOURCE: Our Bunn VPR coffeemaker takes a LONG time to heat
We left vinegar in the coffeemaker overnight. Seems to have done the trick - water is heating up now after 20 or so minutes instead of several hours.
SOURCE: water is lukewarm.
Make sure you have power going to elements from thermostats. check lines going to elements.
Luke warm water is the result of an element gone bad most of the time. One at th etop gone will cause you to get just luke warm water and one at the bottom gone will give you real hot and then cold.
The elements are not to exspensive so if it has two you might as well replace both of them. If you just put 1 new one in it will work the old one till it goes.
Cut power off and cut water off to water heater and drain heater, open hot side on any faucet to help it drain. once drained remove element they have a tube type socket at hardware stores for the removal of it.
Put elements in and fill water heater till all air is out of lines before turning power back on. make sure water is flowing out of all faucets before turning power onto water heater.
The reason being is the elements has to be in water not open air in tank or it will blow new ones.
SOURCE: bunn-o-matio model btx-b does not heat water
Hi, Sounds like a boiler therostat or faulty boiler. Dazza REPAIRER
Hott rod is 120Volt AC.
Check voltage supply for undervoltage, or reversed polarity, or tripped breaker.
Check that electric thermostat is set to 120 degrees.
Rotate thermostat temperature adjustment back and forth and see if you can hear water heater working.
Thermostats can be bad, or stick.
Check the ECO red reset button is not tripped out.
If tank was not full of water before power was applied, the element will instantly burn out.
Use continuity tester across bare element screws to see if element is good. Or use multimeter and test across bare element screws shows 29 ohm for 6 gallon, 18 ohms for 10 gallon.
More resources at Hott Rod, for troubleshoot and contact.
http://www.hottrod.net/hott_rod_troubleshooting.asp
If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7
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