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42vp50 runs out of hot water

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Why does the water suddenly runs COLD after many minutes of running hot?


Unless you are using a tankless hot water heater, there is a limited amount of hot water available in the tank. Electric and gas water tanks need time to recover after use, and if you are using heavily, it can exhaust the available supply. That said, there are a couple reasons why you may have less hot water than seems normal. In both electric and gas water heaters, silt can form in the bottom of the tank. This will build up over time and displace water. It also reduces the heating efficiency of gas units. There is a drain valve on the bottom of water heater tanks to allow for purging of this silt periodically, but few ever do it. You could also have, in the case of an electric hot water heater, a bad element or thermostat. Most electric heaters have an upper and lower element and thermostat. If one fails the other will still work, but the water takes longer to get hot and will deplete faster.

Nov 04, 2015 | Water Water Heaters

1 Answer

I have main combi 24 if you run water slow it is hot but if you turn it up it is luke warm water


see pic;

Notice the red in the 1st picture? That is all hot water. When you have a broken dip tube the cold water is 3/4 of the water heater.

So like in your case, if you run water slower you may get hotter water longer, but if you run at faster rate, hot water short time and then cold.

Check & if needed replace the dip tube. Easy fix


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Feb 25, 2015 | Water Water Heaters

1 Answer

No hot water


sounds like its overheating
check for blockages and good water flow
the input preasure is high enough??
if not it will trip
if you leave it running does it click then start to supply hot water
you may find the temp sensor has become failed
and may need replaced
..

Jan 10, 2015 | Water Water Heaters

1 Answer

Hot water only runs for a few secons durning showers in rv


when you run out if hot water in the shower can you still get hot water in the othert fawcetts???

May 29, 2014 | RTO Atwood DSI-RV Water Heater-6 Gallon

1 Answer

Running out of hot water


Turn the heat higher on the hot water. So you will use less water. There is normally a knob to turn the water higher.

Mar 28, 2012 | General Electric Water Heaters

1 Answer

I have a rheem w/h Md 42vp50pf. It heats my shop floor through the radiant heat tubes. I noticed the shop was getting cold so I checked on it. The pump was on circulating water but the pipes are cold. The...


Similar 42vp50 direct vent product appears on following link:
http://www.rheem.com/product.aspx?id=C24E3F52-A6A4-4BC7-AF5B-0DF23A7A0263
sample manual for power vent series:
http://globalimageserver.com/fetchDocument.aspx?id=c0471d58-5e59-4be6-96f7-68361b8fb515

Manual has troubleshoot section:
If this is combustion-shut-off or FVIR or flammable vapor event, then manual says to call qualified technician.
Service call is certainly less expensive than any fire or injury caused by fire.
Other brands of water heater, for example Bradford White, have customer-resettable FVIR on some models.

Another thing that can be causing problems is air intake, especially in dirty environment like a shop, or if shop chemicals are being inhaled by burner. Burner parts are susceptible to chemicals in trace amounts below odor threshold. You might need fresh air intake for water heater, and air intake needs to be cleaned.

'System lockout' shows on troubleshoot page 32:
1. Gas supply is off or too low to operate.
2. Hot surface ignitor not positioned correctly.
3. Low voltage to the water heater.
4. Electric polarity to unit is incorrect - test and correct.
5. Combustion shut-off device tripped, contact service
agency.
Rheem phone number: 1-800-432-8373

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Jan 31, 2011 | Rheem Water Heaters

1 Answer

Tankless Hot Water Heater Rtg-74pvp-2 7.4 Gpm: Unit isn't turning on when I turn on the hot water...


Has it ever run? Is cold water going to cold water inlet? Hot out to hot water piping? Power ON? Control pad on? gas pressure correct?

May 16, 2010 | Rheem Tankless Hot Water Heater...

1 Answer

No hot water running


Teresa, the same exact thing happened to me this morning.... please let me know what you find out.... :o)

Jan 08, 2010 | General Electric GE SmartWater Household...

1 Answer

Size and installation for instant water heater


Ariston gl4.0 should be fine if used inline with your hot water heater. Used alone it will likely run out when dishwasher is filling and you are using sink.To use your existing hot water for backup: 1 connect existing HOT water line to cold (inlet) on ariston, 2 Then HOT (outlet) from ariston to sink and dw. If you want instant hot water at a sink 10 feet away: use 3/8 pex pipe from ariston to sink, so you only have to run off a cupful or 2 before hot water arrives at sink.

Aug 30, 2009 | RTO Ariston Gl4.0 Instantaneous Electronic...

1 Answer

Water heater runs. Heats water. No hot water at the faucet.


Do you have water at that faucet on the hot side? What if you run it a long time? All hot faucets or just one? Which one. The one farest from the heater? 

Apr 21, 2009 | Water Heaters

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