BoilerFaultCodesWarmhaus rE98 Fault Code
Also written as RE98 — same fault.
The Warmhaus rE98 fault code means: your boiler's main internal computer has encountered a startup failure and cannot control the heating process.. It appears on 1 Warmhaus model in our database.
Technical description: Electronic card start error.
What causes the Warmhaus rE98 fault?
This fault occurs when the boiler's main control board fails to complete its initial self-check during the startup sequence. It is typically caused by a critical hardware failure within the electronic circuitry or a loose connection in the wiring that prevents the computer from communicating with the rest of the boiler's components.
DIY fix possible
Locate the Reset button on the control panelPress and hold the Reset button for 3 to 5 secondsWait for the boiler to complete its restart sequence
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Gas Safe Register →Warmhaus models that show the rE98 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Warmhaus rE98 fault code information on this page is sourced and cross-checked against the official Warmhaus service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026