This Brivis Gas Heater Thermocouple is a crucial safety component for keeping your Brivis ducted gas heater running right. It tells the control board if the pilot flame is lit, ensuring safe operation and preventing gas flow if there's no ignition.
I've seen plenty of old thermocouples fail, causing intermittent faults that techs can chase for ages, so it's good to have a reliable replacement on hand. Replacing a faulty thermocouple can often get a 'no heat' call sorted quickly.
Best For
- Brivis ducted gas heater technicians
- HVAC service and maintenance teams
- Competent DIY owners maintaining their Brivis units
Compatibility
This is a genuine Brivis part, designed to be a direct replacement. It's compatible with Brivis gas heaters that utilise an 18-inch (550mm) clip-in style thermocouple.
- Honeywell PN: Q309A4040
- Brivis PN: B009065, 80009065
If you're running a different model, always check existing part numbers and specs before ordering to ensure a correct fit.
Features
- Genuine Brivis replacement part for assured quality and fit.
- 18-inch (550mm) length to suit specific Brivis heater models.
- Clip-in style for quick and secure installation.
- Essential component for flame supervision and gas safety.
Technical Specifications
| Specification | Detail |
|---|---|
| Length | 24 inch |
| Connection Type | Supports clip and screw type |
| Brivis Part No. | B009065, 80009065 |
| Honeywell Part No. | Q309A4040 |
| SKU | HLQ309A4040 |
What's in the Box
- 1 x Brivis Gas Heater Thermocouple, 18 inch (550mm) clip-in style (HLQ309A4040)
Using It on the Job
- Isolate Power: Always shut off power to the gas heater at the main switch and lock it out before starting any work.
- Access Old Thermocouple: Carefully locate and unclip the old thermocouple from its mounting bracket and pilot assembly. Note its orientation and routing.
- Install New Thermocouple: Mount the new Brivis thermocouple, ensuring it clips securely into place. Position the tip correctly within the pilot flame path for accurate sensing.
- Restore Power & Test: Reconnect power to the heater. Initiate a heating cycle to test the ignition sequence and confirm proper flame sensing.
- Verify Operation: Observe the burner ignite and hold flame reliably for several cycles to ensure safe and correct operation before completing the job.
Limitations & Safety Notes
- Always isolate electrical power before commencing any work on gas appliances.
- Gas appliance servicing, especially component replacement, should ideally be performed by a licensed gas fitter to ensure compliance and safety.
- Ensure the new thermocouple's tip is correctly positioned within the pilot flame for reliable operation and flame sensing.
- This part is specifically for Brivis gas heaters and may not be compatible with other brands or models.
Before replacing a thermocouple, always confirm it's the actual fault. Sometimes a dirty pilot assembly or a weak spark can mimic a thermocouple issue. A quick visual check often saves a second trip and ensures you're fixing the right problem.
Pair With
Pair with other Brivis heating spares like ignitors or pressure switches, and ensure your gas leak detector is charged for post-service safety checks after any gas-related work.