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Gas ignites flame but water is not getting hot

There appears to be no connection between the gas ignition and the water, water flows but is very luke warm

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  • Water Heaters Master
  • 5,089 Answers

You have gas water heater with working burner.
But not getting hot water at faucet?

1) Bad faucet cartridge. Test for crossover. Copy following link:
http://waterheatertimer.org/Crossover.html


2) Is there hot water inside the tank? Open drain valve and check for hot water.

3) Drips and leaks: Turn off all taps and put ear against pipe and listen for water leak.
Water leak can run all the hot out of tank.

Posted on Dec 06, 2012

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Posted on Jan 02, 2017

  • 34 Answers

SOURCE: Water heater with electonic igniter will not work in power outage

What type of heater is this? I need to know the model name and make and then we can go threw the process of how to do it. Most gas heaters do not have power to them and I only know of a few tankless heaters that do.

Posted on Feb 08, 2009

kevin000
  • 1847 Answers

SOURCE: Bosch tankless GWH 1600 H NG won't always ignite

The manual says to hold a match near the pilot while the ignitor is trying. It says that if the unit lights the pilot orifice may be dirty or clogged. Then the manual says to check the voltage on the igniter. It should be 1.3 volts DC minimum if it is not means the electronic control box is defective.

Let me know the status ...Kevin

Posted on Mar 29, 2009

mrhotandcold
  • 248 Answers

SOURCE: Bosch Water Wizard 960 - Pilot light blown out by

replace thermal coupling not a big job best of luck

Posted on Oct 30, 2009

  • 1 Answer

SOURCE: Bosch gas hot water system won't turn on

i have a bosch 16h hydroflow hot water system that will not ignite.

Posted on Dec 17, 2009

motor1258
  • 6674 Answers

SOURCE: my jAYCO rv only get luke warm water for as few seconds and

Also check that by-pass valve(s) is/are, in proper position at back of tank.

Posted on Apr 26, 2010

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Jayco star-craft could not get gas hot water to stay lite, ignition clicked over then when it sounded like it was lite the ignition was still clicking over then it would shut off.


check gas shut off valve make sure it is on -sounds like a bad thermocouple which is a safety that is connected to the gas valve if the thermocouple doesnt read a pilot lite / flame will shut valve off the link can assist you but if your going to diy this yourself ----use extreme caution and safety around any gas units
How to Replace Water Heater Thermocouple or Flame Sensor

Jun 15, 2016 | Water Water Heaters

1 Answer

Boiler won't ignite for hot water unless heating is on.


If this is in a RV the propane monitoring valve may require more gas flow to turn on than the water heater requires. A central heating system requires substantial gas flow so when the monitoring valve opens to fire the central heating, there is enough gas flow to also fire the water heater.

Jan 26, 2016 | Water Water Heaters

1 Answer

No hot water no flame gwh1600h bosch


Tell me more! --
Do you have any other gas appliances in the house?-- and they are firing OK? Can you hear the gas flowing when you push in on the ignition start button? -- There should be a spark as you 'snap' the button?
Remember-- YOu get no ignition of the big flame, until you have water flowing--
How old is the heater?-- Could there be come obstruction in the water flow sensing device?

Oct 13, 2013 | Water Heaters

1 Answer

On A.O. Smith water heater model BTH 199 100 where is the heat sensor rod located ?


Parts list:
http://www.hotwater.com/lit/partslists/197728-004.pdf
Flame rod, flame sensor sits next to igniter inside combustion chamber. This can be cleaned with sandpaper. Do not touch with fingers. Purpose of flame rod is to detect whether ignition has caused actual, sustainable fire inside the combustion chamber.
If sensor is bad, or no ignition is detected after 2-3 attempts, then 'no ignition' error is given.
Bad gas control valve, bad-or-dirty flame rod-sensor, low gas pressure, misaligned rod, dirty combustion parts, etc

Service handbook:
http://www.hotwater.com/lit/training/316586.pdf
High gas pressure spikes can daMAGE gas control valve p7

Product manual:
http://www.hotwater.com/lit/im/com_gas/197727.pdf
Word-search for 'failure'
Low gas pressure. p14 and p54
1-3 trials before declaring 'ignition failure. p48
bad flame sensor (clean with sandpaper) #10 p58
unit must be grounded (check outlet with circuit analyzer) #12 p58
Sequence flow chart p59
Rough starts = ignition failure p60
Troubleshoot chart - ignition failure p62

Mar 12, 2013 | A.O. Smith BTH-199 BTH-199 100 Gallon...

1 Answer

Cannot find pilot light on my bosch GWH635ESL, help!


Call Bosch
Gas Products Technical Support: 800-642-3111

That model number is only shown at one website, and that model number is not shown at Bosch.
Open following link for Bosch:
http://www.boschwaterheater.com/BoschHotWatercomHome/GasProducts/tabid/331/Default.aspx
Search of Bosch for that model number shows no result.

Some water heaters do not have a pilot light. Instead they use hot surface igniter rod that glows red hot
The igniter rod ignites the gas after solenoid valve opens and gas flows to combustion chamber.
The igniter rod and heat sensor have to be operational, and have to be positioned correctly for ignition to take place.
If igniter rod is not working, or if heat sensor does not detect flame, then gas solenoid valve shuts down and water heater does not heat water.

Sep 03, 2011 | Bosch Water Heaters AquaStar - Tankless...

1 Answer

We have a 10 year old Rheem PVW50 Power Vented water heater that works on gas. The last couple of days it has been giving out problems. It will not maintain hot water in the tank. I restarted it and...


The igniter is glowing, but no gas ignites?
So either the gas is entering combustion chamber and not lighting because igniter is positioned incorrectly -or- no gas is entering combustion chamber because air in gas line or bad gas control valve thermostat or gas line is clogged.
When you 'restart' the water heater, somehow you are getting gas to the burner and it is igniting.
I'm not sure what the flame switch is. If the ECO was cut out, the gas control valve would not send power to the igniter and there would be no gas available for 'restart.'
I would adjust location of igniter, check if gas is entering combustion chamber, clean the gas line to the burner, and bleed gas line for air, but another suspect could be the gas control valve thermostat.
Identifying numbers are usually on side of gas valve.
Open following link to help identify gas valve:
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html#intelli
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean

Jul 02, 2011 | Rheem Water Heaters

1 Answer

I have a bosch WR 400 LPG tankless, It will not start, there is some sort of ignition problem, batteries are new and it has gas at least to the regulator, I'm tired of taking cold showers, PLEASE HELP!


Hi,
These hot water heaters will drive ya nuts!!! They are great when they work but a bugger to work on...
The problem may actually be the flow sensor...often they fail to sense the flow and then do not ignite....
Is it actually trying to ignite the flame???
Is the flow switch turning the heater on?
If it is trying to ignite, do you have spark?
Does the pilot light at all?
Is the flame sensor clean?
Is power going back to the control?
Is the control failing to provide power to the gas valve(s)?

All these things need to be gone through and checked off...this will get you started towards finding the trouble...

heatman101

Sep 21, 2010 | Water Heaters

1 Answer

The electronic ignition on a gas water heater will not heat up and glow red to ignite the gas to heat the water atwood r/v water heater


You won't see any red glow until the burner ignites and burns for a while. Its only an ignitor and flame sensor, not a glow plug style.The ignitor has to provide spark for gas to ignite, then it also senses the flame and keeps gas flow coming. What exactly is happening when you turn it to on?

Jul 18, 2010 | RTO Atwood DSI-RV Water Heater-6 Gallon

1 Answer

Hi Our gas water heater is not igniting


you need to replace the thermocouple its an electronic device that keep the gas flowing . the pilot light is always on and the thermo couple controls the flame. if it goes bad the flame goes out and the burner wont come on to heat the water, they are easy to replace and available at all home depot or a lowes kind of store.

Dec 01, 2009 | Water Heaters

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