Question about Water Heaters
The tank use to be hot enough at settings of 120 degrees and it started not getting warm enough
This time of year the water comming in the house is much colder and heater has to work a lot harder to heat 40deg. water than ot does to heat 70deg water in the summer time. its normal.
Posted on Jan 12, 2013
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Posted on Jan 02, 2017
Since you mentioned 'both temperatures' it seems your unit is like most all of them, a lower and upper coil.
If your hot water supply runs out quickly, this normally means that the lower coil has failed. Since heat rises, the upper coil will never supply a tankful of hot water, just hot to start, and then as the flow continues, it doesn't have time to do more than warm the water flowing into the tank.
Every home should now own a simple digital multimeter; they cost less than $20 US everywhere and one can find them in auto parts stores, electronic supply companies and tool companies.
If you have a Harbor Freight tool store in your area, you can get them for under $10 US any time and sometimes even less:
You need to be absolutely certain that the voltage to the water heater is shut down. Before you measure anything else, set the meter to its highest AC setting and check across the coils and then from either contact to the metal housing. If it is dead everywhere, then set the meter to the lowest Ohms scale (normally 200). The resistance of the coil should be nearly the same reading as when you simply short the meter's probe tips together. If it measures 'OL' then the coil is open and must be replaced.
Posted on Feb 26, 2009
I think some one mis informed you, the normal temp on any water heater from the factory is 120, it should not go above that for reasons of sevear burns, as far as it't smart part it's just a name, you will lose a couple of degrees just comming torm the tank to the faucets, the water heater will allways keep the temp in the tank at what ever it is set at, it doesn't have the brains or computer to know what time of day it is but when the cold water comes in to the tank it comes thru a dip tube that goes to aprox 1 inch from the bottom of the tank, if you take a long shower and do not have a energy efficant shower head you can use up to 5 gals, per min of hot water where an energy efficant one only uses 2.5 or less and still has the same pressure at the shower head, the temp in your water heater tries to stay at the setting it is at depending on how much is used at one time meaning washing machine, filling tub or dishwasher at the same time, it lets more cold in as the hot goes out and as you know it can only heat up so much at a time and the cold water is just going across the bottom of the tank, so the name is just that no diffrent then any other water heater unless you went to a tankless water heater.
Posted on May 29, 2009
SOURCE: warm water only
You can eliminate the shower control knob possibility by turning on your hot water anywhere else in the house. If you get hot water in other places, then it could be the knob causing it. A substantial lime buildup in the tank can also cause poor heat transfer from the elements to the water.
Posted on Sep 19, 2009
We will just assume that "a" is the lowest temperature
to correspond to 120 degrees, while "c" for 160 degrees.
So try setting it at "a" and feel the hot water that flow.
Or it could be the other way. Just feel the hot water that
flow. It will be done in a few minutes. I hope this will help
Posted on Nov 27, 2009
2 green flashes is 'High Water Temp.'
Typical energy smart manual:
3 flashes is Temperature Sensor failure.
4 flashes is Upper element
5 flashes is Lower element
Troubleshoot section says:
1) Make sure access doors and insulation are installed.
2) Check elements for resistance of 5-25 ohms (if element has a short in center of element, it might not trip breaker)
3) replace element and reset control system.
Buy ordinary 4500 Watt element from hardware store.
4) I also suspect the self-diagnostic control box.
Manual says: Repair parts may be ordered through your plumber,
local distributor, home improvement center, or by calling
You need serial number, product number and model number from label on side of tank.
Posted on Jan 11, 2011
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