Baxi EcoBlue Advance Heat 19 User Manual

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7219717 - 02 (08/15) EcoBlue Heat 17

Technical Specification 3

3.4 Electrical Diagram

Gas Valve

Safety

Thermostat

Return

Sensor

Flow

Sensor

Parameter

Unit

Pressure Switch

(where fitted)

Electrode

User Interaction

Controller

g/y

Not used

“Socket & See”

Electrical Test Point

Mains

g/y

Loop Connector

(where no pressure

switch fitted)

Key To Wiring Colours

b - Blue

r - Red

br - Brown

g/y - Green/Yellow

All other wires are black

FROM TO COLOUR LINK

PRESURE SWITCH

COMBI ONLY

FLOW TEMP

RETURN TEMP

FLOW SENSOR

HIGH LIMIT BLACK

BLACK

BLUE

RED

PSU

BLACK

HIGH LIMIT

13 1

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Questions and Answers:

V
vlopezAug 18, 2025
Why is my Baxi EcoBlue Advance Heat 19 Boiler flashing 1 red light indicating a sensor error?
- G
  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.
D
deborah71Aug 20, 2025
What to do if my Baxi EcoBlue Advance Heat 19 Boiler shows 3 red flashes for an ignition fault?
- N
  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.