Why is my Baxi EcoBlue Advance Heat 19 Boiler flashing 1 red light indicating a sensor error?
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gonzalezmichaelAug 18, 2025
If your Baxi Boiler displays 1 red flash, it indicates a sensor error. This could be due to a bad connection to the flow or return temperature sensor, a fault with the temperature sensors, low or no flow through the boiler, or reverse flow through the boiler.
To address this:
* Check the connections to the temperature sensors/PCB and the condition of the wiring loom.
* Check the resistance of the temperature sensors.
* Check the pump operation and system circulation.
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deborah71Aug 20, 2025
What to do if my Baxi EcoBlue Advance Heat 19 Boiler shows 3 red flashes for an ignition fault?
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Nichole BrownAug 20, 2025
If your Baxi Boiler displays 3 red flashes, indicating an ignition fault, several issues could be the cause. It might be due to no ignition, no flame detected after ignition, a false flame signal, or repeated flame loss. To address this, you should:
* Verify the appliance is properly earthed.
* Inspect the ignition electrode, cleaning or replacing it if needed.
* Check the operation of the gas valve.
* Ensure the flue is in good condition.
* Verify the combustion and gas valve settings are correct.
* Inspect the condensate drain for any blockages.
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jesseriveraAug 23, 2025
Why is my Baxi Boiler flashing 2 red lights indicating high temperature protection?
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Jennifer CarrAug 23, 2025
If your Baxi Boiler is showing 2 red flashes, it indicates high temperature protection activation. This can happen if the over-temperature thermostat on the heat exchanger has been activated, there's no water flow through the heat exchanger, there's a fault or bad connection with the over-temperature thermostat, the PCB is experiencing an over-temperature condition, or there's a flue fault.
To resolve this:
* Check the connections and operation of the O/T thermostat and air pressure switch (if fitted), as well as the PCB and the condition of the wiring loom.
* Ensure the system pressure is correct and that the system is not air-locked.
* Verify the pump is operating correctly and the system is circulating water.
* Inspect the flue for any issues.
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cummingsjaimeAug 25, 2025
How to troubleshoot a Baxi Boiler when it flashes 1 green light for temperature protection?
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Mia SantiagoAug 26, 2025
If your Baxi Boiler displays 1 green flash, it indicates a temperature protection issue. This may be due to exceeding the maximum flow temperature, a high flow temperature rise rate, or an excessive difference between the flow and return temperatures. To resolve this:
* Check the system circulation and pump operation.
* Check the demands for boiler operation (switched live operation).
* Check the temperature setting.
* Check the temperature sensors in the boiler.
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fwilsonAug 27, 2025
What to do if my Baxi EcoBlue Advance Heat 19 Boiler is flashing 3 green lights indicating flame loss?
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Matthew YoungAug 27, 2025
If your Baxi Boiler displays 3 green flashes, this indicates a flame loss. This means no flame was detected during operation.
To troubleshoot:
* Check that the gas supply is turned on and gas is available, especially if you are using a pre-payment meter.
* Inspect the flue condition.
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jennifer31Aug 30, 2025
What does it mean when my Baxi EcoBlue Advance Heat 19 Boiler flashes 4 red lights indicating a fan fault?
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John McdonaldAug 30, 2025
If your Baxi Boiler is showing 4 red flashes, it indicates a fan fault, which can be due to a fan calibration error or fan failure. If the fan is operating, check the flue installation and condition. If necessary, replace the control/fan assembly.
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camachokristinSep 2, 2025
What does it mean when my Baxi Boiler flashes 4 green lights indicating a communication fault?
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Kayla MoralesSep 2, 2025
If your Baxi Boiler displays 4 green flashes, it indicates a communication fault, which can be caused by a bad connection, a wiring fault, or an internal communication fault. To resolve this, check the wiring and connections between the boiler and the User Interaction Controller, as well as within the box. If necessary, replace the control/fan assembly.
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Jesse MillerSep 4, 2025
What does 6 red flashes on my Baxi EcoBlue Advance Heat 19 Boiler mean?
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David BowenSep 4, 2025
If your Baxi Boiler displays 6 red flashes, it indicates a miscellaneous issue. This can be due to a bad connection or wiring fault internal or external to the boiler, a parameter error, or a communication error. To address this, check that all wiring connections are correctly made. Use a service tool or Recom software to check all parameter settings. If necessary, replace the PU and/or control/fan assembly.
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Mark HillSep 7, 2025
What does it mean when my Baxi EcoBlue Advance Heat 19 flashes 2 green lights for shutdown input?
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Robert GreenSep 7, 2025
If your Baxi Boiler displays 2 green flashes, it indicates a shutdown input. This is caused by open circuit BL terminals on the User Interaction Controller. If a condensate pump is wired to these terminals, check its operation. Also, check the wiring to the BL terminals, ensuring the link is present or the connections to the external device are correct.
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Shawn LopezSep 9, 2025
What does it mean when my Baxi Boiler flashes 5 red lights indicating a parameter fault?
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Scott WillisSep 9, 2025
If your Baxi Boiler displays 5 red flashes, it indicates a parameter fault, which can be due to a bad connection to the PU or a parameter error or faulty PU. Check the PCB and condition of wiring loom. Replace the PU and recommission.
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