Insufficient gas pressure at the pilot to heat thermocouple

There could be a few different reasons why your Kingavon mobile calor gas heater is not producing heat despite igniting. Here are some potential causes to check:

1. Burner or pilot light: Check to make sure the burner and/or pilot light are not blocked by debris or dust. Use a soft brush or compressed air to clean them off.
2. Gas supply: Make sure the gas supply is turned on and there is adequate gas pressure. Check to see if the regulator is working properly.
3. Thermocouple: The thermocouple is a safety device that shuts off the gas supply if the pilot light goes out. If it is malfunctioning, it may be preventing the gas from flowing properly. Try cleaning or replacing the thermocouple.
4. Gas valve: The gas valve controls the flow of gas to the burner. If it is faulty, it may not be allowing enough gas to flow through to produce heat. Try cleaning or replacing the gas valve.
5. Ignition system: If the ignition system is not working properly, the gas may ignite but not produce enough heat. Check to see if the spark electrode and ignition module are working properly.

If none of these solutions fix the problem, it may be best to contact a professional repair technician to diagnose and fix the issue.

Could be the instructions are out of date as sometimes the button on other appliances has been integrated into the main control knob. Perhaps this is the case with your appliance...

If this is the case the lighting instruction might be similar to below.
In the off position it is possible to push the control knob in a short way to supply gas to the pilot and then turn the knob anti-clockwise for ignition. Once lit it is important to keep the knob pushed in until the thermocouple is warm enough to maintain gas flow and then it can be released and the desired heat setting selected.

Three basic possibilities - draught, insufficient oxygen available for the flame or interruption of the gas supply - most likely the latter.

Quite likely the pilot flame is either not powerful enough to heat the thermocouple bulb, the thermocouple bulb is out of position and not being heated or the thermocouple is faulty.

Problem is not thermocouple:
Thermocouple should be finger-tight plus 1/4 turn
Overtightening will short thermocouple against gas control valve, and solenoid switch will not open, and no gas will reach pilot once red button is released.
Tip of thermocouple has to sit in the pilot flame.
If pilot flame will stay on, then thermocouple is good.

Problem is not solenoid switch.
The gas control valve solenoid opens and closes gas supply to gas control valve.
On mechanical gas control valve, when you push down the red button to light pilot, then you are opening the solenoid and letting gas flow into gas control valve.
When heat is applied to thermocouple, a small electric current travels to gas control valve, and this causes solenoid to stay open.
If you extinguish pilot, then no current travels to gas control, and solenoid clicks off.
You can hear it click, and this is how you test it.
However, since you are getting gas to pilot light, then the solenoid is not the problem.

This leaves 4 possible problems:
1) Bad gas control valve thermostat.
http://waterheatertimer.org/pdf/How-to-replace-water-heater-gas-valve.pdf
2) Inadequate gas pressure. Call gas company.
3) Dirty combustion parts. Clean the burner with wire brush and water.
4) Clogged air intake on FV water heaters: Rheem FV gas water heaters have glass vial that will break if combustion is slowed by clogged air intake.
http://waterheatertimer.org/How-to-repair-Rheem-TRD.html
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

sounds like the thermocouple:
The thermocouple is a safety device that turns off the gas if there is no pilot light. If you look closely at the burning pilot light, there is a small metal tube that sits directly in the flame, with wires that lead back to the gas valve. The thermocouple generates a small amount of electrical current when heated by the flame. This current keeps the gas safety valve open. If the pilot light gets blown out, the current stops and the gas valve closes. When you light the pilot light, you hold down the over-ride button for about 30 seconds. This allows the gas to flow long enough to heat up the thermocouple and generate current and then you can release the over-ride button and gas will continue to flow. If the thermocouple is defective, then as soon as you release the over-ride button, since there is no electrical current, the gas will stop flowing and the pilot light will go out.

This is a pretty common failure on water heaters and furnaces. Replacement of the thermocouple is fairly simple if you are the handyman type. If not, the thermocouple is a cheap part -- about $10 bucks, but the service call may run you $100 or so. Before you call a serviceman, get all of the brand and model information from the information plate on the heater so he can bring the proper replacement part. And sorry for your trouble. hope this helps:)

The thermocouple is a safety device that turns off the gas if there is no pilot light. If you look closely at the burning pilot light, there is a small metal tube that sits directly in the flame, with wires that lead back to the gas valve. The thermocouple generates a small amount of electrical current when heated by the flame. This current keeps the gas safety valve open. If the pilot light gets blown out, the current stops and the gas valve closes. When you light the pilot light, you hold down the over-ride button for about 30 seconds. This allows the gas to flow long enough to heat up the thermocouple and generate current and then you can release the over-ride button and gas will continue to flow. If the thermocouple is defective, then as soon as you release the over-ride button, since there is no electrical current, the gas will stop flowing and the pilot light will go out.

This is a pretty common failure on water heaters and furnaces. Replacement of the thermocouple is fairly simple if you are the handyman type. If not, the thermocouple is a cheap part -- about $10 bucks, but the service call may run you $100 or so. Before you call a serviceman, get all of the brand and model information from the information plate on the heater so he can bring the proper replacement part. And sorry for your trouble. hope it's summer time where you are:)

well if you have 6.2 psig at the valve that is your problem. most valves will only take an inlet pressure of 14" wc or about 1/2 psig. as pilot gas comes out of the valve with no regulation it would be blowing like a son of a gun. so if you have 6 .2" wc,water colum you are in good shape. have you tried to jumper the limit connections? a paper clip would work just fine. but if it does work no fair leaving it in place as a great danger may come your way. tell me what the pilot looks like blue and sharp or yellow and layz. there is a magnet in the valve that the thermocouple screws into but these dont often go bad.

Some things to check:

Make sure the thermocouple is squarely in the pilot flame and that the pilot flame is large enough to envelop the thermocouple. A weak pilot can be caused by gas pressure or a carboned-up pilot orifice (where the gas comes out). The orifice may need to be cleaned. Ordinary automotive carburetor cleaner will work. Don't try to stick objects into the orifice - damage may result. If you need to perform this step, make sure the gas is turned off to the heater first.

Make sure the other end of the thermocouple is clean and tight in the gas valve.

Hold the pilot plunger down for at least a minute to be sure to give the thermocouple enough time to heat up.

Three likely possisilities - one is insufficient gas pressure, another is a plugged pilot gas line and the other is that the thermocouple is defective. There are other possible problems, of course, but these are the most likely.

Once the flame has struck it heats up a thermocouple that in turn holds the gas valve open

It is a safety measure in case the flame blows out and the gas keeps on coming.

Sometimes the end of the thermocouple gets dirty and a scrub with a fine emery board does the trick

If not it is a new part (They are not that expensive)