BoilerFaultCodesDaikin 8 Fault Code
The Daikin 8 fault code means: your boiler has detected that its internal fan is not spinning at the correct speed, which has caused the system to stop working for safety.. It appears on 3 Daikin models in our database.
Technical description: Incorrect fan speed. Possible causes: Fan catching on casing, Wiring between fan and casing, Check wiring for poor wire contact, Replace fan.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Daikin models that show the 8 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Daikin 8 fault code information on this page is sourced and cross-checked against the official Daikin service / installation manuals for each affected model.
- Daikin Altherma Hybrid EHYKOMB33 manual (PDF)
- Daikin EKOMB 22 Combi manual (PDF)
- Daikin EKOMBG 22 manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026