Unknown
F4 OR L4 on Ideal Logic Code Combi ESP1

Ideal Logic Code Combi ESP1 fault code F4 OR L4

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

What the manual says

Manufacturer manual

FLOW THERMISTOR FAULT

From this model's manual
Verified against the Ideal/Ideal Logic Code Combi Esp1 Installation Servicing Guide Boiler Error Codes installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Boiler cover options

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All 43 fault codes on the Logic Code Combi ESP1

Seeing a different code? Every code this model can display, in one place.

4.24.34.44.54.64.74.84.94.104.114.124.134.15dUF1F2F2 or Fn or LnF3F4F5F5 OR L5F6F7F8F9F9 or L9 or F8 or L8FAFnFUL1L2L4L4 or F4L5L5 or F5L6L8L9LCLnP1P7

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