ECA Proteus Premix 24 HCH Fault codes & diagnostics

2 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.

Regular Natural GasLPG 24 kW 2017-present
GC Number 41-814-01
Download the ECA Proteus Premix 24 HCH manual The official installation & service manual (PDF) — the exact document these fault codes were verified against. PDF

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Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Versions & GC numbers

Which version do you have?

The GC number on your boiler's data badge identifies the exact appliance and production years, as recorded in the UK Product Characteristics Database.

GC number Appliance (register name) Produced
41-814-01 PROTEUS PREMIX 24 HCH NG ERP UK 2017–present

Appliance names and production years are taken from the UK Product Characteristics Database (the SAP/SEDBUK register). Where a GC number is also printed in this model's own manufacturer manual, both sources were checked to agree.

Fault codes

All 2 documented codes

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E44

Your boiler is struggling to fire up for hot water because it has detected a failure during its internal ignition checks.

High Engineer only £100-280 Shared across the range

Parts commonly replaced

  • Ignition electrode
  • Ionisation probe
  • Gas valve
  • Main PCB

Related codes

Full explanation for E44
E99

Your boiler's internal computer has encountered a critical error and cannot tell the system how to operate safely.

High Engineer only £250-450 Shared across the range

Parts commonly replaced

  • Printed Circuit Board (PCB)
  • Wiring Harness

Related codes

Full explanation for E99
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