Dometic SMP439-11
Official technical documentation and workshop diagnostics for SMP439-11.
Technical Specifications
ElectricalRated input voltage: 230 V AC, Input frequency: 50 Hz, Input current: 1.3 A at 230 V AC, Starting current: 54 A cold start at 230 V AC, Rated power: 225 W, Efficiency: 87% at 230 V AC, Power factor correction: > 0.9 (full load), Leakage current: < 1 mA at 240 V AC, Charging voltage: 14.8 V, Retention voltage: 13.6 V, Max output current: 15 A, Charging current: 0 – 15 A, Overvoltage protection limit: 16 V, Over temperature threshold: 90 °C ± 5 °C (measured internally), Voltage insulation: I/P – O/P: 3 kV AC, I/P – FG: 1.5 kV AC, O/P – FG: 0.5 kV AC, Insulation resistance: I/P – O/P: 100 MOhm / 500 V DC
Gas Or PressureNot applicable
Capacities DimensionsCompatible battery capacity: 50 – 150 Ah (AGM only), Weight: 1.3 kg, Ambient temperature range: –20 °C to +50 °C, Air humidity: 20 to 90%
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|
N/A | Status LED flashing red slowly Possible Cause: Battery overvoltage | Check the battery. | DIY Safe |
N/A | Status LED lit red constantly Possible Cause: Short circuit, reversed polarity, or broken internal fuse | Connect the battery charger with the correct polarity, remove the short circuit, and contact customer service for replacing the internal fuse. | DIY Check / Tech Fallback |