12V/24V 20A Solar charge controller problems & troubleshooting:
Symptom | Troubleshooting |
Sunlight on panel but green charge LED not on. | Check solar panel output and cable connections are correct and secure. |
The charge LED flashes fast. | System overvoltage protection is working. Open circuit in the battery. Check battery cable connections. Charging circuit damaged. |
Load LED is on but no output. | Load open circuit.Check cablesand connections and any other load switches. |
Load LED is on and flashing fast. No output. | Check output for short circuit or gross over-load. Remove the load and switch output ON, Controller will resume after 30 seconds. |
Load LED is on and flashing slowly. No output. | Overload has occurred. Remove sufficient load and switch output On. Controller will resume in 30 seconds. |
System LED flashing RED with no output. | Battery is over discharged and load disconnected. The load will be reconnected when battery charged again. |
Specifications:
Type | SDRC-10 | SDRC-15 | SDRC-20 |
Rated charge current | 10A | 15A | 20A |
Rated load current | 10A | 15A | 20A |
Work voltage | 12; 24V; | ||
Over load, short circuit protection | 1.25 rated load current 60sec, 1.5 rated loads current 5sec, over load protection action. ≥3 Rated load current short circuit protection action. | ||
Self-consumption current | ≤ 6 mA | ||
Charge circuit voltage drop | ≤0.26V | ||
Load circuit voltage drop | ≤0.15V | ||
Over voltage protection | 17V; ×2/24V | ||
Work temperature | Industry stage:-35°C to +55°C;Commercial stage -5°C to +50°C | ||
Boost charge voltage | 14.6V;×2/24V; (keep 10min)(only used when overdischarging) | ||
Direct charge voltage | 14.4V; ×2/24V; (keep 10min) | ||
Float charge voltage | 13.6V; ×2/24V; | ||
charge return voltage | 13.2v;×2/24V; | ||
Temperature compensation | -5mv/°C/2v(Boost charge, Direct charge, Float charge, charge return voltage); | ||
Lower voltage indicate | 12.0V; ×2/24V; | ||
Over discharge voltage | 11.1V(no load)- modified voltage by discharge rate of battery; ×2/24V; | ||
Over discharge return voltage | 12.6 V; ×2/24V | ||
Over-discharge pressed return voltage | 12.4V; ×2/24V | ||
Control mode | PWM charge mode; modified discharge voltage by the discharge rate |
(SDRC-20 )24V 20A Solar Charge Controller