Introduction
This manual provides essential information for the installation, operation, and maintenance of your Fixitshop 110186-01 Thermocouple. This component is designed as a replacement part for various heating appliances, including specific models from Desa, Comfort Glow, and Vanguard lines of blue flame vent-free heaters. Please read these instructions carefully before proceeding with installation or maintenance.

Image: The Fixitshop 110186-01 Thermocouple, featuring a 33-inch copper wire, a threaded brass fitting on one end, and a pointed brass tip on the other, accompanied by a small metal clip.
Product Specifications
- Model Number: OE105 (Replaces 110186-01, 110183-01, GA183)
- Length: 33 inches (Centerline Length: 32 Inches)
- Material: Copper
- Outer Diameter: 3/16 inch
- Connector Type: Screw
- Mounting Type: Panel Mount (Clip Mounted)
- Voltage Rating: 400 Volts (for component integrity, not operational voltage)
- Weight: Approximately 3.2 ounces
- Compatibility: Desa Internationals Comfort Glow, Glo-Warm, and Vanguard lines of blue flame vent-free heaters. Specific models include CBN20, CBP20, SBN20, SBP20, CBN20T, CBP20T, CBN30T, CBT20N, CBT20OT, CBT30NT, CBT30PT, CBN20TK, and CBP20TK.
Installation Instructions
Safety First: Before beginning any installation, ensure the heating appliance is completely turned off and disconnected from its power source (gas and electricity). Allow the appliance to cool down completely to prevent burns.
- Access the Thermocouple: Locate the existing thermocouple in your heating appliance. This typically involves removing the front panel or cover of the heater.
- Disconnect the Old Thermocouple: Carefully unscrew the thermocouple's connection from the gas valve. Note its routing and how it is secured.
- Remove the Old Thermocouple: Detach the thermocouple tip from its mounting bracket, usually near the pilot light. The provided clip may be used for securing the new thermocouple.
- Install the New Thermocouple: Insert the tip of the new Fixitshop 110186-01 thermocouple into the mounting bracket, ensuring it is positioned correctly to be enveloped by the pilot flame. Secure it with the clip if necessary.
- Connect to Gas Valve: Route the thermocouple wire carefully, avoiding sharp bends or contact with hot surfaces. Screw the threaded end of the thermocouple securely into the gas valve. Do not overtighten.
- Verify Connections: Double-check all connections to ensure they are snug and properly seated.
- Reassemble Appliance: Replace any panels or covers removed during the installation process.
It is recommended that installation be performed by a qualified technician if you are unsure about any steps.
Operation
The thermocouple is a safety device that generates a small electrical current when heated by the pilot flame. This current signals the gas valve to remain open, allowing gas to flow to the main burner. If the pilot flame extinguishes, the thermocouple cools down, the current stops, and the gas valve automatically closes, preventing unburned gas from accumulating.
Once installed, the thermocouple operates automatically as part of your heater's safety system. No direct user interaction is required for its operation.
Maintenance
- Regular Inspection: Periodically inspect the thermocouple tip for any signs of corrosion, carbon buildup, or damage. A clean tip ensures proper heat transfer and reliable operation.
- Cleaning: If carbon buildup is present, gently clean the thermocouple tip with a soft brush or fine sandpaper. Avoid bending or damaging the tip.
- Connection Check: Ensure the connection to the gas valve remains tight. A loose connection can interrupt the electrical signal and cause the pilot light to go out or the main burner not to ignite.
- Wire Integrity: Check the thermocouple wire for any kinks, cuts, or signs of heat damage. Replace the thermocouple if the wire is compromised.
Troubleshooting
If your heater's pilot light will not stay lit, or the main burner fails to ignite, a faulty thermocouple is a common cause. Here are some troubleshooting steps:
- Pilot Light Not Staying Lit: This is the most common symptom of a failing thermocouple. If the pilot lights but goes out when you release the pilot button, the thermocouple may not be generating enough voltage to hold the gas valve open.
- Pilot Flame Not Hitting Thermocouple: Ensure the pilot flame is strong and directly engulfing the tip of the thermocouple. Adjust the pilot flame if possible, or clean the pilot orifice if it appears weak or misdirected.
- Loose Connections: A loose connection at the gas valve can prevent the thermocouple's signal from reaching the valve. Gently tighten the connection.
- Damaged Thermocouple: Inspect the thermocouple for visible damage, such as a bent or corroded tip, or a damaged wire. If damaged, replacement is necessary.
If these steps do not resolve the issue, consult a qualified heating technician.
Warranty and Support
Specific warranty information for this product is not provided in the available documentation. For warranty inquiries or technical support, please contact Fixitshop directly through their official channels or the retailer from whom the product was purchased.
Manufacturer: Fixitshop Corp.
UPC: 733353048534