The Vokera gas boiler red light is an indication of a fault or issue with the boiler. This comprehensive guide will provide you with the key details and technical specifications related to the Vokera gas boiler red light, helping you diagnose and resolve the problem efficiently.
Causes of a Solid Red Light
Overheating
When the boiler is getting too hot, it can cause the boiler to shut down and enter lockout mode. The temperature limit on a Vokera gas boiler is typically set between 82°C and 88°C. If the boiler exceeds this temperature range, the safety thermostat will trigger, causing the boiler to shut down and display a solid red light.
Pump Failure
The central heating pump is responsible for circulating hot water throughout the central heating system and to the taps. If the pump is not functioning correctly, it can lead to poor water circulation, causing the boiler to overheat and display a solid red light.
Fan Issues
The fan on a Vokera gas boiler is responsible for expelling harmful flue gases. If the fan is not working correctly, it can prevent the proper expulsion of these gases, leading to the boiler shutting down and displaying a solid red light.
Causes of a Flashing Red Light
Low Water Pressure
The Vokera gas boiler requires a specific water pressure range, typically between 1 and 2 bar, to operate correctly. If the water pressure drops below this range, the boiler will display a flashing red light. Check the pressure gauge on your boiler and top up the water pressure if necessary.
Faulty Thermostat
If the thermostat on your Vokera gas boiler is not working correctly, it can cause the boiler to shut down and display a flashing red light. Check the thermostat settings and replace the thermostat if necessary.
Blocked Condensate Pipe
The condensate pipe on a Vokera gas boiler is responsible for draining the condensation produced during the combustion process. If this pipe becomes blocked, it can cause the boiler to shut down and display a flashing red light. Check for any blockages and clear them if possible.
Air in the System
If there is air trapped in the central heating system, it can cause the boiler to shut down and display a flashing red light. Bleed the radiators to release any trapped air and restore proper water circulation.
Broken or Stuck Diverter Valve
The diverter valve on your Vokera gas boiler is responsible for directing hot water to either the central heating system or the hot water taps. If the diverter valve is stuck or broken, it can prevent the boiler from functioning correctly, leading to a flashing red light. Contact a Gas Safe engineer to address this issue.
Causes of Red and Green Lights On
Service Mode
If the boiler has been left in service mode after a recent boiler service, it can cause the red and green lights to appear together on the control panel.
Incorrect Water Pressure
If the water pressure in the central heating system is either too low or too high, it can cause the red and green lights to illuminate simultaneously on the Vokera gas boiler.
Faulty Heating Temperature Sensors
The heating temperature sensors on a Vokera gas boiler can become faulty, leading to the red and green lights appearing together on the control panel.
Resetting a Vokera Boiler
To reset a Vokera gas boiler, follow these steps:
1. Move the mode selector switch to the ‘OFF/RESET’ position.
2. Wait for a few seconds.
3. Move the mode selector switch back to either the ‘hot water only’ or ‘heating and hot water’ position.
Technical Specifications
Error Codes
Vokera gas boilers display error codes on their control panel to indicate specific faults. Some common error codes include:
– E10 (flame lockout)
– E011 (extraneous flame)
– E020 (limit thermostat)
Light Sequences
Different light sequences on the Vokera gas boiler control panel can indicate various faults:
– Constant red light: Lockout
– Flashing green light: Issues with the hot water sensor or standby mode
Reference
- https://heatable.co.uk/boiler-advice/vokera-red-light
- https://www.warmzilla.co.uk/blog/vokera-boiler-faults
- https://247homerescue.co.uk/blog/vokera-boiler-fault-codes/