What does the Baxi E119 fault code mean?
The Baxi E119 fault code indicates that the water pressure in the boiler is too low, which can prevent the system from operating efficiently. This low pressure can lead to insufficient heating and hot water supply.
Common Causes
- Leak in the system: A leak in the heating system or radiators can cause a drop in water pressure.
- Pressure relief valve issue: If the pressure relief valve is faulty or has been activated, it may allow water to escape, leading to low pressure.
Can I fix it myself? (DIY)
If the issue is simply low water pressure, you can attempt to fix it yourself. First, locate the filling loop on your boiler, which is usually a flexible hose with two valves. Open both valves to allow water to enter the system until the pressure gauge reads between 1 and 1.5 bar. Once the pressure is restored, close the valves and check for any leaks.
Estimated Repair Cost (2026 UK Prices)
If the low pressure is due to a leak or a faulty pressure relief valve, the repair costs can vary. For a leak repair, you might expect to pay around £150-£250, including parts and labor. If the pressure relief valve needs replacing, the cost could be approximately £100-£200 for the part plus £80-£120 for labor, totaling around £180-£320.