E193 High
Your boiler has detected that water is not circulating correctly through the system before the burner ignites.
Technical description: Pre-circulation error
Typical repair cost: £150-£350 (including labour)
DIY fix possible
Check that your system pressure is between 1.0 and 1.5 bar on the pressure gaugeEnsure all radiator valves and isolation valves under the boiler are fully openBleed your radiators to remove any trapped air pockets that may be blocking flow
Protect yourself from future repair bills
A boiler cover plan would cover faults like E193 — no call-out fees, no surprises.
*Affiliate links — we may earn a commission at no extra cost to you. Prices shown are starting prices.
Parts commonly replaced
- Circulation pump
- Flow temperature sensor
- Return temperature sensor
*Affiliate links — we may earn a commission at no extra cost to you.