This document provides a quick reference guide for the Baxi boiler control panel, covering its key controls, display descriptions, and troubleshooting steps for when the boiler is not working.
Key Controls
The control panel features several buttons and indicators for managing the boiler's operation:
- OR (Standby - Reset - Esc): This button serves multiple functions. It can be used to put the boiler into standby mode, reset the system after an error, or escape from a menu or programming mode.
- iP (Boiler information view): Pressing this button allows users to access various information about the boiler's current status and settings. This can include operational data, error codes, and other diagnostic details.
- III+ (Increase central heating temperature button): This button is used to increase the desired temperature for the central heating system. Each press typically adjusts the temperature by a small increment.
- III- (Decrease central heating temperature button): Conversely, this button is used to decrease the desired temperature for the central heating system.
- + (Increase domestic hot water temperature button): This button allows users to increase the set temperature for domestic hot water.
- - (Decrease domestic hot water temperature button): This button allows users to decrease the set temperature for domestic hot water.
- // (Domestic hot water / central heating selector button): This button toggles between controlling the domestic hot water (DHW) and central heating (CH) functions. When pressed, the display will show the relevant settings for the selected mode. The display is designed to show all available segments to clearly indicate the active mode.
Display Description
The boiler's display provides visual feedback on its operational status, settings, and any issues that may arise:
- ** (Domestic hot water and heating OFF):** This icon indicates that both the domestic hot water and central heating functions are currently off. However, frost protection may still be enabled to prevent freezing in cold conditions.
- ** (Indicate errors that prevent burner from starting):** This symbol illuminates when there are errors that are preventing the boiler's burner from igniting. These errors typically require attention before the boiler can operate.
- ** (Service required):** This icon indicates that the boiler requires servicing. This could be due to routine maintenance schedules or specific operational issues that warrant professional inspection.
- ** (Water pressure too low):** This symbol appears when the central heating system's water pressure has dropped below the recommended operating level. Low pressure can prevent the boiler from functioning correctly and usually requires repressurizing the system.
- R (Indicates a resettable error): The 'R' symbol signifies an error that can potentially be cleared by pressing the reset button on the control panel. These errors are often temporary and can be resolved by a simple reset.
- P (Indicates navigation in programming mode (parameter)): When 'P' is displayed, it indicates that the user is currently navigating through the boiler's programming mode, typically adjusting specific parameters or settings.
- i (Indicates navigation in programming mode): Similar to 'P', the 'i' symbol also indicates navigation within programming mode, often for informational parameters or settings.
- E (Generic error): The 'E' symbol indicates a general error within the boiler system. This often accompanies a specific error code to provide more detail about the nature of the problem.
- ** (Burner lit):** This icon illuminates when the boiler's burner is actively firing, indicating that it is generating heat.
- ** (Domestic hot water mode):** This icon indicates that the boiler is currently operating in domestic hot water mode, prioritizing the heating of water for taps and showers.
- ** (Heating mode):** This icon indicates that the boiler is currently operating in central heating mode, providing heat to radiators or underfloor heating systems.
- °C / °F (Units for temperature): These indicators show whether the displayed temperature is in Celsius or Fahrenheit.
- PSI / bar (Units for pressure): These indicators show whether the displayed pressure is in Pounds per Square Inch (PSI) or bar.
Troubleshooting - Boiler Not Working
The guide provides a structured troubleshooting flowchart to help users diagnose and resolve common issues when the boiler is not working:
- Start: Begin by checking the gas supply.
- Is the gas supply turned on? Check if other gas appliances (e.g., fire, cooker) are operating.
- NO: If there's no gas, consult your supplier.
- YES: Proceed to the next step.
- Is there electricity to the boiler? Is the display lit?
- NO: Check if the electrical supply to the boiler is switched on.
- YES: Proceed to the next step.
- Is the burner flame showing?
- NO: Proceed to the next step.
- YES: The boiler should be operating normally. If problems persist, contact your gas installer. The display will show the burner flame icon and current temperature (e.g., 13.8°C).
- Is the timer set to ON and calling for heat?
- NO: Ensure the timer is set to ON for central heating (see any instructions supplied with the timer).
- YES: Proceed to the next step.
- Is the room thermostat (if fitted) set high enough?
- NO: Turn the room thermostat to maximum setting.
- YES: Proceed to the next step.
- Is the central heating system pressure between 1 and 2.5 bar?
- NO: If the reading falls below 1 bar, repressurize the system. The display will show error code 118, indicating low pressure (e.g., E R 118).
- YES: Proceed to the next step.
At this point, the troubleshooting path splits into two main branches:
EITHER:
- Is the E and R symbol illuminated or flashing? (e.g., E R 133, indicating an error code and a resettable error).
- YES: Press the reset button on the boiler's control panel.
- If it does not reset: Contact your installer or service engineer. The serial number may be required.
OR:
- Is the spanner symbol illuminated or flashing? (e.g., E 151, indicating a flame failure or other error).
- YES: Contact your installer or service engineer.
This comprehensive guide helps users understand their Baxi boiler's functionality, interpret its display, and systematically troubleshoot common operational issues, empowering them to resolve minor problems independently or know when to seek professional assistance.
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