Select your fault code
Sanju's Heating
Ideal Guide
F1Low Water Pressure
Your heating system does not have enough water, so the pressure has dropped too low.
What F1 means
Your heating system does not have enough water, so the pressure has dropped too low.
Technical: System Pressure
Possible causes
- System pressure below the required level
- Water loss from a leak in the system
- Filling loop not topped up
Can you fix it yourself?
You can usually fix this yourself by topping up your boiler water pressure to 1.5 bar using the built-in filling loop. If the pressure keeps dropping after topping up, there may be a leak — contact a Gas Safe registered engineer.
Need a Gas Safe engineer?
Sanju's Heating covers Newbury, Basingstoke & Reading. Fast response, transparent pricing.
sanjusheating.co.uk/book