No hot water, even after new water heater

Reply

  #1  
Old 12-08-18, 04:13 AM
H
Member
Thread Starter
Join Date: Dec 2018
Location: United States
Posts: 3
Received 0 Votes on 0 Posts
No hot water, even after new water heater

I live in a house that was built in 2011. The water heater (AO SMITH, ECT 52 210). I noticed about a week ago the water was only warm, not hot. The wife called a plumber, he drained the water heater, and changed the lower element. NOTHING Changed with water temp. The next day he came back out, said the diagnostic checks out but changed the top thermostat anyway. Nothing changed. He said if it doesn't get hot, I need a new water heater. That didn't make sense to me, so I changed both thermostats and heating elements again, I also looked inside and saw the dip tube seemed to be in tact with no issues. The top of the water heater is actually getting to around 105 degrees, whereas the bottom DOES NOTHING and stays around 63 degrees. I caved and bought a new water heater.

The new water heater is a Rheem XEM50M12EC55U1. I installed it myself, but still have the same issue. It has a digital screen and tells me the temp of top and bottom. I set it to 125, but after about 6 hours the top temp is 107 and bottom 64.

I have checked my power going to the water heater. Each wire gives me 120v DC with the ground. I get 240 on the water heater.

I checked the house water pressure and have 80psi.

I NEED HELP!
 
  #2  
Old 12-08-18, 05:36 AM
P
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 24,754
Received 792 Votes on 729 Posts
That is baffling. There isn't much to a water heater just two thermostats and two heating elements. I would open a hot water tap inside the house or wait until someone has just taken a shower. This is to make sure the water heater is on and heating. Check the voltages at the water heater when it's heating. I'm curious if you are still getting 240 volts. The only thing I can think of is you have a power problem. It may show 240 volts at rest but might be dropping significantly when it's heating.
 
  #3  
Old 12-08-18, 06:12 AM
H
Member
Thread Starter
Join Date: Dec 2018
Location: United States
Posts: 3
Received 0 Votes on 0 Posts
With a load (The water heater attempting to heat, It is still drawing around 240v DC.
 
  #4  
Old 12-08-18, 06:22 AM
V
Member
Join Date: Jan 2010
Location: North East Kingdom of Vermont
Posts: 2,533
Received 1 Vote on 1 Post
Why is your testing device reading DC (Direct Current) ?

Isn't your circuitry AC ?
 
  #5  
Old 12-08-18, 10:27 AM
O
Member
Join Date: Dec 2006
Location: Canada
Posts: 687
Received 2 Votes on 2 Posts
If it is not the water heater and it is not the voltage, it must be the current. Can you see anything with the wiring that might limit the current. A bad connection. A mouse eaten insulator. A cut in the wire of some sort.

In any event, if something is limiting the current, that power is most likely being lost as heat. Possibly a lot of heat and this type of situation is where electrical house fires come from.

I cannot think of anything else so I would be very concerned. That breaker would be off when I go to sleep tonight until I found out what is causing it. If the tank is in the basement perhaps the wiring is visible for you to follow along and look for defects. If it is in the walls, did anyone hang up a picture lately or add a big screen TV to the wall, that might have damaged a wire?

Hopefully someone else comes up with something so you can at least have 105 water but until then I strongly advise you to turn off that breaker unless you are in diagnostic mode at the time.
 

Last edited by OptsyEagle; 12-08-18 at 10:44 AM.
  #6  
Old 12-08-18, 10:30 AM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 61,489
Received 1,422 Votes on 1,315 Posts
If you reduce/limit the available current the voltage will go down.

I would check for 240vAC directly on the elements.
 
  #7  
Old 12-08-18, 12:38 PM
H
Member
Thread Starter
Join Date: Dec 2018
Location: United States
Posts: 3
Received 0 Votes on 0 Posts
SO....I found the cause. On another website an individual told me to test water pressure with water main on, then turn it off. Come to find out I have a water Leak. I narrowed it down to a hot water leak under the foundation near a bathroom and master bedroom. I am now putting a lot of things together, and I DO believe the leak has been there for at least 6 months....just now got real bad.
 
  #8  
Old 12-08-18, 12:47 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 61,489
Received 1,422 Votes on 1,315 Posts
Heating that much hot water should have presented you with a massive electric bill.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: