It is likely that the thermocouple needs to be replaced.

Mr Heater Pilot Wont Stay Lit

Having difficulties with your Mr Heater pilot light? If it wont stay lit after the initial ignition, youll need to do some troubleshooting. We’ve compiled a list of solutions to help you get your pilot light glowing and heating throughout your home again. From checking the type of fuel used, to inspecting the thermocouple and thermopile, weve got everything you need to know about diagnosing and solving a pilot light issue. With just a few steps, youll get your heater back in working order!

Mr Heater Pilot Won’t Stay Lit

Troubleshooting the pilot light heat generators can be a difficult task, but there are a few common tips to help identify and resolve issues. The first step is to verify that the ignition source and gas supply are functional. This can be done by testing the thermocouple and gas control valve, as well as checking the operation of any electrical components.

Potential Reasons the Mr Heater Pilot Won’t Stay Lit

If the ignition source is confirmed to be functional, then the next step is to identify potential reasons why the pilot won’t stay lit. One possible cause is a lack of an ignition or low flame output, which could indicate an issue with the thermocouple or other components in the system. It is also possible that there may be a blockage in either the gas orifice or venturi inlet, which can cause problems with igniting and maintaining a flame.

No Ignition or Low Flame Output

If there is no ignition or low flame output from your Mr Heater pilot light, then it could be due to an issue with either your thermocouple or other electrical components in your system. To check if your thermocouple is working properly, you should inspect it for any signs of damage, such as corrosion or dirt buildup. If it appears to be intact, then you should test it by applying voltage through its terminals and checking whether it produces an adequate amount of heat. If not, then you may need to replace it with a new one. Additionally, you should inspect all other electrical components in your system for any signs of damage or malfunctioning connections that could prevent proper operation of your pilot light system.

Blockage in The Gas Orifice or Venturi Inlet

In some cases, there may be a blockage within either the gas orifice or venturi inlet that prevents adequate air flow for proper combustion of fuel. To diagnose this problem, you should first clean out any debris from within these components using compressed air and a brush if necessary. If this does not resolve the issue then you may need to repair any pipe fittings connected to these components as they may have become loose over time due to wear and tear. Additionally, if these components are damaged beyond repair then they will need to be replaced with new parts in order for your Mr Heater pilot light system to work properly again.

Mr Heater Pilot Wont Stay Lit

No Ignition or Low Flame Output

When you experience either no ignition or low flame output on your Mr Heater pilot, there are a few things to check. First, you should test the spark plug wires, igniters and switches. This will help determine if there is an issue with the electrical components that power the pilot. You should also inspect combustion sensors, coils and modules for any signs of cracks or corrosion that may be preventing the pilot from staying lit.

Testing TherMocouple and Gas Control Valve

In addition to checking for proper voltage on the thermocouple harness, it is important to test the voltage on the supply line to the gas control valve. This will help make sure that the gas is flowing properly and not causing any issues with the flame output.

Dirty Burner Base

If you find that there is debris around your burner head, it could be preventing proper ignition or causing low flame output. To prevent this issue, be sure to clean out any debris that has built up around the burner base. Additionally, inspect for any signs of physical damage to the heating surface which could also be contributing to this issue.

Inspect Combustion Sensors, Coils, and Modules

When inspecting combustion sensors, coils and modules it is important to look for any signs of cracks or corrosion that may be preventing proper operation of these components. If this is found then it should be addressed immediately in order to ensure that your Mr Heater pilot stays lit with optimal flame output. Additionally, testing operation of module switches can also help identify any issues with these components as well.

FAQ & Answers

Q: What are some common troubleshooting tips for a Mr Heater pilot that won’t stay lit?
A: Common troubleshooting tips include verifying the ignition source and gas supply is functional, checking electrical connections, cleaning the gas orifice, repairing pipe or hose assemblies, testing spark plugs wires and igniters, inspecting combustion sensors and coils, and checking for physical damage to the heating surface.

Q: What should I do if there is no ignition or low flame output?
A: If there is no ignition or low flame output, you should check for dirty burner base by cleaning out debris from around the burner head and inspecting for signs of physical damage to the heating surface. You should also test spark plug wires, igniters and switches, as well as inspect combustion sensors, coils and modules.

Q: How do I check the operation of electrical components?
A: To check the operation of electrical components you should ensure proper voltage on the thermocouple harness and test voltage on the supply line to the gas control valve.

Q: What could be causing a blockage in the gas orifice or venturi inlet?
A: Blockages in the gas orifice or venturi inlet can be caused by debris buildup from dirt accumulations or corrosion in these areas. These blockages can also be caused by pipe or hose assemblies that are damaged or not properly installed.

Q: How do I clean out a dirty burner base?
A: To clean out a dirty burner base you should first clean out any debris from around the burner head with a vacuum cleaner. You should then inspect for any signs of physical damage to the heating surface such as cracks or corrosion on sensors and coils. Finally, you should test operation of module switches if applicable.

The most likely cause for a Mr Heater pilot not staying lit is a defective thermocouple. This component is responsible for detecting the presence of a flame and sending a signal to the gas valve to keep it open. If the thermocouple is not functioning properly, the gas valve will close, causing the pilot light to go out. It is important to replace the thermocouple in order to ensure that the Mr Heater pilot stays lit.