If there is a small amount of dirt blocking the air the yellow color might only.
Wall heater pilot light too high.
The pilot light on my water heater is too high.
Turn the thermostat to its lowest setting.
The most common reason why a pilot light would start to burn yellow is that the air intake valve to the pilot light is clogged with dirt.
You can fix this easily by moving the thermocouple closer to the flame.
If the pilot light is burning examine its color.
This catch 22 can cause issues with your fireplace.
Although they are gradually being replaced by electronic ignition devices pilot lights still provide the flame that ignites many gas appliances including water.
The heater won t operate properly if the pilot flickers is too weak or goes out and the cause could also be blockages in the pilot tube.
The initial flame of the pilot heats the thermocouple which will signal the valve to stay open and keep the pilot lit and the propane heater functioning.
A pilot light provides a flame that powers appliances like water heaters furnaces and fireplaces.
When this happens air will be blocked to the flame and it will suffer from incomplete combustion causing the yellow color.
Answered by a verified hvac technician.
Another cause of a weak pilot is a faulty thermocouple.
Regardless of the thermostat setting the pilot is heating the water.
Excessive gas input remedy.
Orifice may be oversized.
I have a 7000 mvlc robert shaw gas valve on my old wall heater i fixed the pilot flame from lazy yellow to blue with 0110 lp orifice and added a 1751 0013 converstion to lp but the.
Lighting the pilot light on a gas heater is simple to do.
Gas input too high or not corrected for high altitude.
Check for proper orifice size.
Here is how to light the pilot light on a gas heater.
Adjusting the pilot light flame on a gas furnace is the best place to start if it appears that your furnace is not getting as hot as it used to or if it seems like the flame goes out a lot.
A proper pilot flame should be blue with a yellow tip and should be strong enough to cover about 1 2 inch at the end of the thermocouple tip.
How to adjust a pilot light.
If the pilot light is out though such a signal isn t sent.
If the flame is too strong and improperly adjusted it will be blue but may be noisy and lift off the thermocouple causing improper furnace operation.
In order to continue to burn though a pilot light relies on a thermocouple which sends an electric signal.
Main burner flame lazy and yellow also cause of combustion odors cause.
