Brivis Gas Heater Thermocouple 24 inch Clip and Nut

This Brivis Gas Heater Thermocouple 24 inch Clip and Nut is a flame supervision component for compatible Brivis ducted gas heaters. It helps prove that the pilot flame is present, supporting safe heater operation and helping prevent gas flow where ignition has not been established.

When a pilot light keeps dropping out, the thermocouple may be part of the fault path, but it should not be guessed by symptom alone. A dirty pilot assembly, weak pilot flame, poor flame position, gas valve issue, wiring fault, or separate ignition problem can create similar symptoms. Before ordering, confirm the original part number, thermocouple length, connection style, pilot assembly type, heater model, and gas type.

Best For

• Licensed gas fitters replacing a confirmed faulty Brivis thermocouple.
• HVAC service technicians diagnosing pilot dropout or flame-sensing faults.
• Residential heating maintenance teams matching the original thermocouple by length, connection style, and part number.
• Apprentices learning gas appliance service under licensed supervision.

Compatibility

This thermocouple is designed for compatible Brivis ducted gas heaters that use a 24 inch clip and nut style thermocouple. It is associated with Brivis part numbers B009065 and 80009065, and cross-references with Honeywell part numbers Q309A4040, Q309A2135, and Q309A1970. HVAC Shop SKU: HLQ309A4040-BR.

If you are running a different model, check the existing thermocouple, pilot assembly, connection style, heater data plate, and original part numbers before ordering. Do not order by appearance alone.

Need help choosing? Read our Brivis heater flame sensing fault guide before ordering to confirm whether the thermocouple, pilot assembly, control board, pressure switch, gas valve, transformer, or wiring is the more likely cause of the no-ignition fault.

Features

• 24 Inch Length: Provides the matched length for compatible Brivis heater applications that require this style of thermocouple.
• Clip and Nut Style: Designed for compatible pilot assemblies that use this connection arrangement.
• Part Number Match: Suits applications where the original thermocouple matches the listed Brivis and Honeywell references.
• Flame Supervision Component: Helps confirm pilot flame presence as part of the gas heater safety sequence.

Technical Specifications

What's in the Box

• 1 x Brivis Gas Heater Thermocouple 24 inch Clip and Nut, New Style (HLQ309A4040-BR)

Installation Notes

1. Confirm the Fault: A licensed gas fitter should confirm whether the thermocouple is faulty or whether the issue is caused by the pilot assembly, gas valve, pressure switch, control board, transformer, wiring, gas supply, or dirty pilot flame path.
2. Match the Part Number: Check the existing component and confirm the listed Brivis, Honeywell, or HVAC Shop SKU reference before ordering.
3. Match the Style: Confirm the thermocouple length, clip and nut connection style, pilot assembly type, and routing match the original component.
4. Fit According to Manufacturer Information: The replacement thermocouple should be installed using the correct Brivis service information for the specific heater model.
5. Test and Commission: After installation, the licensed gas fitter should test pilot flame stability, flame supervision, ignition operation, burner operation, and safe heater operation before returning the unit to service.

Limitations & Safety Notes

• Thermocouple replacement is gas appliance service work and should be carried out by a licensed gas fitter in accordance with AS/NZS 5601.1 and local requirements.
• This part is for compatible Brivis gas heater applications where the original thermocouple, length, connection style, and part number match.
• Do not order by appearance alone. Match the original component, heater data plate, pilot assembly, gas type, and part number before ordering.
• Correct thermocouple tip position in the pilot flame is critical for reliable flame supervision and safe heater operation.
• Do not sharply bend the thermocouple tubing, as this can damage the component and affect reliability.
• Gas leak testing, ignition checks, flame supervision checks, and heater commissioning must be completed by appropriately licensed tradespeople after installation.
• If you smell gas, turn off the gas supply if safe to do so, avoid ignition sources, leave the area, and contact your gas emergency provider or licensed gas fitter.

Tradie Pro Tip

When replacing any thermocouple, confirm the tip sits correctly in the pilot flame path. Weak flame contact, pilot contamination, poor positioning, or a separate ignition fault can make a new thermocouple look faulty and lead to nuisance lockouts.

Pair With

Pair with compatible Brivis pilot assemblies, pressure switches, control boards, gas valves, transformers, wiring components, and diagnostic tools when completing a full no-ignition or flame-sensing fault diagnosis. Always confirm the exact fault before replacing gas appliance components.