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Stephanie JonesAug 10, 2025
Why S&A Chiller shows ultra-high temperature alarm (E04)?
- JJacqueline SheltonAug 10, 2025
The ultra-high temperature alarm on your S&A Chiller (E04) might be triggered by several factors: a blocked dust gauze causing bad thermolysis (clean the dust gauze regularly); poor ventilation for air outlet and inlet (ensure smooth ventilation); unstable or extremely low voltage (improve the power supply circuit or use a voltage regulator); improper thermostat parameter settings (reset parameters or restore factory settings); frequent power switching (allow sufficient refrigeration time, more than 5 minutes); or excessive heat load (reduce heat load or use a chiller with larger cooling capacity).
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