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Why stoped my Cointra 10 gas heater suddenly to heat the water? After about one year we found less water output from the heater, and then the equipment suddenly stoped.

The equipment stoped to heat the water

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I am not familiar with the model. Is this a 10 gallon water heater? the volume of water can not change. The temperature can usually be adjusted and even placed in vacation mode. Also the pilot light might be out, this would be the only thing I could think of that would stop all hot water. You mentioned output. If you are referring to flow this would be a restriction in you pipes possibly. If you have old galvanized pipes this would explain the reduction in flow. Also if this is a tankless water heater a reduction in flow would explain in not working at all. If the flow of water is not adequate enough a tankless heater will now turn on. If it is a Tankless water heater then there is a filter located on the cold side. To check this turn off the cold water, relieve the pressure by piping the TPRV Valve "Temperature, Pressure Relief Valve. Then take the cover off the filter. clean all that nasty gunk off the filter, reinstall it and you are back in business. The heater should be as good as new.

Posted on Apr 12, 2015

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Posted on Jan 02, 2017

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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

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How long to heat water in tank


Depending on the size (volume) of the tank, you should feel the water rise above ambient temperature in as little as 10 - 30 minutes. Hot water should be available in 20 - 60 minutes for electric water heaters - and slightly less for LP / Gas fired heaters.

Dec 02, 2014 | Water Heaters

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Cointra electric water heater (5 years old). Leaking water through base panel. No T & P Valve visible. I have emptied it and removed the base panel but am not sure whether to refill and observe or just...


Usually, this means that the water tank is leaking. It is not worthwhile to fix the leakage unless you have welding equipment. Just buy a new one.

Feb 22, 2014 | Water Heaters

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Cointra godesia boilers


Either the pilot is not lit, or the thermostat/gas valve is not working.

Dec 18, 2013 | Water Heaters

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Cointra godesia water heater... works perfectly but only for 5 mins then pilot goes out... u can relight straight away and it works for 5 mins again .. this boiler I have just bought new ... j


In my experience thermocouple either work or they do not.when a water heater runs for a length of time before the interupter cuts the pilot or on some modules safety cut out sensor also known as over heat thermostat cuts the gas supply the problem can normally be found in the flue restricting the disposal of waste products of the combustion or the lach of air flow through the appliance

May 19, 2013 | Water Heaters

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Squeeling sound and lower pressure from gas water heater


Probably the factory-installed heat trap nipples are clogged.
Open following links.
http://waterheatertimer.org/Low-hot-water-pressure.html
http://waterheatertimer.org/Low-hot-water-pressure.html#trap
Noisy whistling and humming and low pressure are common problem with heat trap nipples and inserts from factory.
Replace heat-trap nipples with pex-lined nipples, or remove heat trap inserts with screwdriver or needle nose... careful not to break insert so it falls into tank ... which can then get lodged in hot water line elbow or under-sink shut off.
Factory-installed heat traps are part of overall strategy so manufactures can claim more efficient water heaters, without requiring customers to any thinking.
Other strategies include foam insulation instead of fiberglass (so that wires cannot be replaced on electric units), reducing factory-set temperature from previous 130-135 to 100-120, and re-estimating downward the hot water use for average family.
So some of the strategies are useful, while others problematic or imaginary.
Call manufacturer to pay-for or provide new pex-line nipples. Warranty for fist year covers Labor and parts, and after 1st year, warranty covers parts
http://waterheatertimer.org/Water-heater-manufacturers.html
Save $10 a month in future replacement costs: maintain water heater so it lasts longer:
http://waterheatertimer.org/How-to-maintain-water-heater.html

Apr 25, 2013 | Rheem Tankless water heater for 1-2...

1 Answer

I have a model 6G40PVW-40F water heater and we have no hot water... the thermostat light on warm/vacation is on and so are 2 other lights...If I diconnect it and re-connect it then it will start..the gas...


Most gas water heater problems today can be solved with yearly maintenance that includes cleaning burner parts, clean air intake, check venting, check electrical connections, bleed gas line, and check gas pressure.
Gas water heater manuals recommend yearly maintenance by service technician.

In past years, gas water heaters required less maintenance, but they were less energy efficient and more dangerous to operate.

Sounds like you have Intellivent gas control valve thermostat.
Open following link to identify gas valve and see error codes:
http://waterheatertimer.org/pdf/Intelli-vent-gas-valve2.pdf
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html#intelli

Error light on vacation + 2 other lights = 3 possible conditions:
1) Wiring error: check outlet with circuit analyzer:
http://waterheatertimer.org/images/Typical-circuit-analyzer-15.jpg
2) Pressure switch tubing not connected, air intake obstructed (clean intake), or vent exhaust obstructed (check for proper venting).
http://waterheatertimer.org/images/Test-water-heater-vent-400.jpg
3) System in lockout: Low gas pressure, hot surface igniter not positioned correctly.

You can do some of this yourself.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean

Jun 30, 2011 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Rheem pronto tankless water heater just barely warm model # 74pvn-1. This is in a house we are just purchasing. Also it looks like it may be attatched to another tank water heater , Help please


Before calling service technician, open following link for Rheem troubleshooting resources.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Sometimes people attach tankless to tank-type heater to preheat incoming cold water.
Additional tanks are also used to store solar heat, and some installations have tank-type because tankless is unreliable. Service technician can sort out the function correctly.
http://waterheatertimer.org/Tempering-tank.html

Owner should read tankless manual thoroughly, especially troubleshoot and maintenance sections. Tankless require yearly maintenance.

Since tankless are expensive to repair and replace, you might be able to fire up the tank-type water heater and provide hot water without much cost.
You can also install tank-type gas water heater yourself. Lowes sells 40 gallon for $317.00, and then you offer 10% less.
http://waterheatertimer/How-to-install-gas-water-heater.html

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2 Answers

Just not hot enough


Hi Ken Tankless Water Heaters typically heat to a 80 deg temp. rise. Per a set time it takes the water to pass through the heat exchanger. Matter of seconds So at 130 deg F. Your heater is working fine. Did you take a heat measurement or are you looking at the set points inside the cabinet? To get the 130 deg F you need to upgrade the sensor available from your Bosch Dealer. Typical output water temperature would be 110. There are scalding issues over this set point. As long as you have 3/4 id pipe in and out and have insulation on the discharge side of the heater at all exposed points of the pipe. Your system was likly installed properly. Look it is only my opinion but Bosch it the best you can get in Tankless heaters. As for the dishes. Use the sanitize setting on the dishwasher or alittle extra bleach in the dishwater. And don't forget to rince with fresh water only. For the shower or tub. Use less cold water in the mix. Tankless water heaters were designed to use less resorces aswell as energy. And I want to thank you for that.

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