Baxi Heat 625 User Manual (English)

Other manuals for Baxi Heat 625

Questions and Answers:

D
Donna SimonAug 8, 2025
How to troubleshoot temperature protection issues in my Baxi Heat 625 Boiler?
- B
  Brooke RojasAug 8, 2025
  If your Baxi Boiler is experiencing temperature protection issues, it could be due to several reasons: * The maximum flow temperature may have been exceeded. * The flow temperature rise rate might be too high. * There could be an excessive difference between the flow and return temperatures. To resolve this: * Check the system circulation and pump operation. * Verify the demands for boiler operation. * Check the temperature setting. * Inspect the temperature sensors in the boiler.
B
Brittany HarperAug 13, 2025
What to do if my Baxi Heat 625 Boiler displays a communication fault?
- N
  nielsencherylAug 13, 2025
  If your Baxi Boiler shows a communication fault, the cause may be a bad connection or wiring fault, or an internal communication fault. To address this: * Check the wiring and connections between the boiler and the User Interaction Controller, and also within the box. * If necessary, replace the combustion control unit.
B
bmarksAug 18, 2025
Why is my Baxi Boiler losing flame?
- T
  Terri McdonaldAug 18, 2025
  If your Baxi Boiler is experiencing flame loss, it means no flame was detected during operation. Here’s what you can do: * First, check that the gas supply is turned on and available, especially if you're using a pre-payment meter. * Next, check the condition of the flue.
D
Darrell MccormickAug 25, 2025
What does shutdown input mean on my Baxi Heat 625 Boiler?
- M
  Michael BoothAug 25, 2025
  If your Baxi Boiler is showing a shutdown input error, it means the BL terminals on the User Interaction Controller are open circuit. Here’s how to troubleshoot: * If a condensate pump is wired to these terminals, check its operation. * Check the wiring to the BL terminals, ensuring the link is present or the connections to the external device are correct.
V
Vincent HarrisAug 28, 2025
What causes a parameter fault in a Baxi Heat 625 Boiler?
- J
  James ButlerAug 28, 2025
  If your Baxi Boiler is showing a parameter fault, it could be due to a parameter error, a faulty PU, a configuration error, or a PCB fault. The suggested solution is to replace the combustion control unit.
C
Charles HansenSep 2, 2025
What does a miscellaneous error mean on my Baxi Heat 625?
- N
  Nicholas OwensSep 2, 2025
  If your Baxi Boiler has a miscellaneous error, it indicates an internal fault in the combustion control unit. The suggested solution is to replace the combustion control unit.

Baxi Heat 625 Specifications

General

Mounting	Wall-mounted
Output Power	25 kW
CH Output	25 kW
DHW Output	25 kW
ERP Rating	A
Fuel Type	Natural Gas
Flow Rate	10.2 L/min
Heating Flow Temperature Range	30-80 °C
DHW Flow Rate at 35°C Rise	10.2 L/min
Gas Supply Pressure	20 mbar
Type	Combi Boiler
Dimensions (HxWxD)	700 x 400 x 280 mm