E193 High
Your boiler is struggling to move water around the system properly, which is causing it to shut down to prevent overheating.
Technical description: Circulation
Typical repair cost: £150-350 (including labour)
DIY fix possible
Check that all radiator valves are fully openEnsure the boiler pressure is between 1.0 and 1.5 barTry bleeding your radiators to remove any trapped air
Protect yourself from future repair bills
A boiler cover plan would cover faults like E193 — no call-out fees, no surprises.
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Parts commonly replaced
- Circulation pump
- Automatic air vent
- Flow/Return thermistors
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