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Model 640ybvit control has light on far left and c lit and will not do anything

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Vaillant gas water heater - pilot light only, not lighting the main gas ring when tap is turned on..


first check to see if the thermocouple is close enough to the pilot. if it is and won't light the ring, replace the thermocouple.

Mar 01, 2014 | Water Heaters

1 Answer

How to light pilot


Assuming it is not an electric spark, but is really the type with a real pilot light:
Move the gas control on the water heater to PILOT
Push the valve handle on the gas controller down to start the gas flowing to the pilot.
Using a match, light the gas at the pilot while holding the gas controller valve handle down.
Keep the gas valve handle depressed for 30 seconds after lighting.
Release the gas controller vale handle - the pilot should remain lit. If not, repeat lighting one more time
Once the pilot remains lit, turn the gas controller valve to On - this should cause the main flame to come on.

NOTE: DO NOT LIGHT A MATCH IF YOU SMELL A HEAVY CONCENTRATION OF GAS - CALL A SERVICEMAN AND VACATE THE AREA

Dec 03, 2012 | American Standard Water Heaters

1 Answer

Reliant 501 Natural Gas won't stay lit


Reliance water heater?
Thermocouple is good if the pilot stays lit continuously.

501 is older model. Unknown if this unit has FVIR protection and sealed combustion chamber or open air intake on front of unit.
http://waterheatertimer.org/pdf/Reliance-2006-Service-Handbook.pdf

With FVIR protection:
Get more fresh air to the unit.
Clean the flame arrestor screen.
Test and replace the thermocouple:
http://waterheatertimer.org/How-to-test-water-heater-thermocouple.html
Inspect and clean burner and combustion parts
Test gas pressure, bleed air out of gas line.
Replace gas control valve.
Test draft air by lighting match and see if smoke is pulled into the vent pipe at draft hood on top of tank.

Aug 20, 2012 | Water Heaters

1 Answer

Have an out of warantee Rheem Glas Fury Model 4250 (serial number RHNG 1202h03437) that has stopped working as this was in the middle of all the chaos of hurricane/tropical storm Irene I am not sure ...


Open following links to help identify product and download typical manual:
http://www.rheem.com/Products/tank_water_heaters/gas_water_heaters

http://www.rheem.com/product.aspx?id=CC643E03-4C15-4775-B139-E504A95651F7

Typical manual:
http://globalimageserver.com/fetchDocument.aspx?id=01091171-3bac-4cb9-a0a8-a11aac3bd668

Usually, the instructions for lighting water heater are on side of tank, and located at gas control.
If you add a comment and describe gas control in detail, and add if model has piezo igniter, I might be able to provide specific instructions for that gas valve.
Also include if wires on bottom of gas control go to a switch located on combustion door.
http://waterheatertimer.org/images/IMG_9146-gas-control-thermo.jpg

Make sure basement has plenty of fresh air to support combustion.
Clean combustion parts and air intake.
Check that thermocouple sits inside pilot flame.
If no gas comes out of gas control when trying to light water heater, then check that gas valve handle is parallel with gas line. Gas pressure might be low. Gas might have air in line.
If pilot lights but will not stay lit, then thermocouple might be bad.
http://waterheatertimer.org/pdf/How-to-replace-thermocouple.pdf

Many factors can contribute to water heater not lighting or staying lit.
Get started, and then add a comment with steps taken so far, and what you observe for more help. I will be here most of the evening. Aug 1, 2011.

Take a moment and rate answer:
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Sep 01, 2011 | Rheem 40 Gallon FVR NATGAS Low WATER...

1 Answer

Reliance 606 natural gas water heater - model #640YORT - water does not stay hot. pilot has to be clicked to heat and then u can use hot water til tank empty and it will not continue to heat water.


If I understand correctly, the pilot light is not staying lit.
You light the pilot and water in the tank reaches temperature.
Once hot water is gone, then pilot light has to be lit again.

Gas pressure is good, and gas is flowing.
Thermostat is working at high end because it cuts off heating.
Vent is working because tank heats up.
Air intake is working.

Gas control thermostat might not be reading low temperature. Replace gas control valve.
Pilot tube might be dirty. Clean burner parts and combustion chamber, and air intake, and vent.
Backdraft might be blowing out pilot. Check for constant updraft by running water heater 5 minutes, and then light match under vent hood and see if smoke goes up.
Very hot air can put out pilot, especially when water heater located in attic. Add ventilation.
Improper vent might have water dripping back down into combustion chamber and putting out pilot light and rusting out the parts. Inspect for rusted parts and water.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf

Aug 09, 2011 | Reliance Natural Gas Water Heater Control

1 Answer

Flammable sensor is lit and won't go off. I replaced the sensor how do i reset the controller?


Certain water gas water heater models feature electronic controls with a flammable vapor sensor installed on the bottom portion of the water heater unit. This sensor is designed to shut off your water heater system to prevent fires in case flammable vapors are present within the area. If your flammable vapor sensor caused your water heater to shut down, check the area immediately for leaking gas or other flammable products. Common household chemicals such as bleach can also trip the safety system as well as unsuccessful burner ignition attempts. I'm not sure what control your unit has, but on a White Rodgers here's how it goes.


White Rodgers Intelli-Vent PowerVent Control Equipped Models
  1. Step 1 Turn the water heater's blower switch off and disconnect the power cord for the water heater (refer to your particular model's operation guide for the exact location of the blower switch). Disconnect the Molex connector attached to the bottom of the control pad (the left most connector with five pins).
  2. Step 2 Turn on your multi-meter and set it to read resistance or "ohms". Connect one of the multi-meter's probes to the number two pin and the other probe to the number three pin of the Molex connector (middle black wires). If the reading on your multi-meter reads below 9k or above 45k ohms, the flammable vapor sensor is faulty and in need of replacement; you cannot reset the system until this issue is resolved.
  3. Step 3 Reconnect the Molex connector to the bottom of the control pad, reconnect the water heater's power if and turn the blower switch to the "ON" position. Press both the left and right buttons on the control pad at the same time. Wait for the green light on the control pad to blink and press the following buttons in sequence: Left, Right, Left, Left, Right, Left, Right, Right (you will need to perform these actions within 30 seconds of reconnecting the power cord to the water heater in order to be successful

Oct 15, 2010 | Audiovox Richmond 6G40-36F 6-Year Tall Gas...

1 Answer

Basement was flooded when washer inlet hose burst. Approx 6 in of water in the area where the water heater stands. Complaint of no hot water, no pilot flame. Attempt to light pilot successful but pilot...


Certain Rheem water gas water heater models feature electronic controls with a flammable vapor sensor installed on the bottom portion of the water heater unit. This sensor is designed to shut off your water heater system to prevent fires in case flammable vapors are present within the area. If your flammable vapor sensor caused your water heater to shut down, check the area immediately for leaking gas or other flammable products. Common household chemicals such as bleach can also trip the safety system as well as unsuccessful burner ignition attempts.


White Rodgers Intelli-Vent PowerVent Control Equipped Models
  1. Step 1 Turn the water heater's blower switch off and disconnect the power cord for the water heater (refer to your particular model's operation guide for the exact location of the blower switch). Disconnect the Molex connector attached to the bottom of the control pad (the left most connector with five pins).
  2. Step 2 Turn on your multi-meter and set it to read resistance or "ohms". Connect one of the multi-meter's probes to the number two pin and the other probe to the number three pin of the Molex connector (middle black wires). If the reading on your multi-meter reads below 9k or above 45k ohms, the flammable vapor sensor is faulty and in need of replacement; you cannot reset the system until this issue is resolved.
  3. Step 3 Reconnect the Molex connector to the bottom of the control pad, reconnect the water heater's power if and turn the blower switch to the "ON" position. Press both the left and right buttons on the control pad at the same time. Wait for the green light on the control pad to blink and press the following buttons in sequence: Left, Right, Left, Left, Right, Left, Right, Right (you will need to perform these actions within 30 seconds of reconnecting the power cord to the water heater in order to be successful

Oct 01, 2010 | Rheem Water Heaters

2 Answers

Pilot light won' stay lit on water heater


Why do you think the regulator has anything to do with the thermo-couple?if its not the thermo-couple its the flame sensor,you failed to give me the model number of the heater.when does the pilot go out.If its when the gas valve opens its the sensor.

Mar 17, 2010 | Rheem 40 Gallon FVR NATGAS Low WATER...

1 Answer

The pilot light & will stay lit. untill the burner cycles on/off


MAKE SURE THE BURNER TUBE AND ORIFICES ARE CLEAN. MAKE SURE YOU HAVE THE PROPER LP PRESSURE.

Oct 05, 2009 | RTO Atwood Water Heater - 6 Gal LP

1 Answer

Pilot Light will not remain lit


Try this, turn the black gas ****, on top of the control box, to the Pilot position. Set the temp. control on the front of the box to the desired temp. Then, hold a match or whatever else you use to light it, next to the end of the pilot, then, while holding the match to the pilot, press the reset button on top. When the pilot lights, continue to hold the reset button down for about 1 minute. Then, after a minute, turn the gas **** to the ON position, then it should remain on.

Jan 20, 2009 | Water Heaters

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