Epsolar LandStar LS1024EU

Questions and Answers

H
Henry FloydAug 8, 2025
What to do if the Load LED indicator is FAST FLASHING on my Epsolar Controller?
- W
  wrightjustinAug 8, 2025
  If the Load LED indicator is FAST FLASHING, it indicates a short circuit. When the first short-circuit occurs, the controller will automatically resume to work after 10 seconds. If a second short-circuit occurs, press the button, and the controller will resume working after 3 seconds.
H
Heather LewisAug 13, 2025
What to do if the Load LED indicator is SLOWLY FLASHING on my Epsolar Controller?
- P
  Patrick LopezAug 13, 2025
  A slowly flashing Load LED indicator means there's an overload. Reduce the load and press the button once. The controller will resume working after 3 seconds.
C
Candace CarrAug 17, 2025
Why is the charging LED indicator fast flashing on my Epsolar Controller?
- P
  patrickamandaAug 18, 2025
  The charging LED indicator flashes rapidly because the battery voltage is higher than the over voltage disconnect voltage (OVD). Verify if the battery voltage is excessively high and disconnect the solar module.
N
nicoleibarraAug 22, 2025
What to do if there is no LED indicator on my Epsolar Controller?
- R
  Rhonda DiazAug 22, 2025
  If there's no LED indicator, it means the battery voltage is lower than 6V. Use a multimeter to measure the battery voltage; the controller requires a minimum of 6V to start up.
A
Andrea McdanielAug 28, 2025
Why is there no charging status LED indicator with normal connection on my Epsolar Controller?
- A
  Anthony RiceAug 28, 2025
  The absence of a charging status LED indicator with a normal connection suggests that the input voltage of the solar module is lower than the battery voltage. Measure the input voltage of the solar module; it must be higher than the battery voltage.
S
Sydney EstesSep 2, 2025
How to troubleshoot a charging LED indicator that is off during daytime on my Epsolar Controller?
- C
  Cameron KellySep 2, 2025
  If the charging LED indicator is off during the daytime when sunshine falls on PV modules properly, it indicates a PV array disconnection. Check that PV and battery wire connections are correct and tight.

Summary

Installation Instructions

Mounting

Instructions for physically installing the solar charge controller.

Wiring

Guidance on connecting the solar panel, battery, and load.

Operation

LED Indicators

Explains the meaning of various LED lights on the controller.

Setting Operation

Details how to adjust settings like load mode and battery type.

Protection and Troubleshooting

Protection

Describes the built-in protection mechanisms of the controller.

Troubleshooting

Provides solutions for common faults and issues encountered.

Technical specifications

Electrical Parameters

Details electrical characteristics of the charge controller models.

Temperature Compensation Coefficient

Specifies the temperature compensation factor for battery charging.

Environmental parameters

Defines the operating and storage conditions for the controller.

Mechanical Parameters

Outlines physical dimensions, mounting, and weight of the controller.

Summary

Installation Instructions

Mounting

Instructions for physically installing the solar charge controller.

Wiring

Guidance on connecting the solar panel, battery, and load.

Operation

LED Indicators

Explains the meaning of various LED lights on the controller.

Setting Operation

Details how to adjust settings like load mode and battery type.

Protection and Troubleshooting

Protection

Describes the built-in protection mechanisms of the controller.

Troubleshooting

Provides solutions for common faults and issues encountered.

Technical specifications

Electrical Parameters

Details electrical characteristics of the charge controller models.

Temperature Compensation Coefficient

Specifies the temperature compensation factor for battery charging.

Environmental parameters

Defines the operating and storage conditions for the controller.

Mechanical Parameters

Outlines physical dimensions, mounting, and weight of the controller.

The LS-EU Series Solar Charge Controller is a device designed for solar power systems, offering efficient and reliable battery charging and load management. It utilizes Series PWM (Pulse Width Modulation) charging technology, which is known for increasing battery lifetime and improving overall solar system performance.

Function Description:

The primary function of the LS-EU series controller is to regulate the charging of a battery from a solar module and to manage the power supply to a DC load. It acts as an intermediary, ensuring that the battery is charged optimally and protected from various electrical faults, while also providing a stable power output for connected loads. The controller features LED indicators to intuitively display battery voltage status, charging status, and load status. It also includes a USB output for charging electronic equipment.

Important Technical Specifications:

Nominal System Voltage:
- LS0512EU/LS1012EU: 12VDC
- LS1024EU/LS2024EU: 12/24VDC
Maximum PV Input Voltage:
- LS0512EU/LS1012EU: 30V
- LS1024EU/LS2024EU: 50V
Rated Charge/Discharge Current:
- LS0512EU: 5A
- LS1012EU/LS1024EU: 10A
- LS2024EU: 20A
USB Output: 5VDC/1.2A (for all models)
Max. Battery Voltage to Controller:
- LS0512EU/LS1012EU: 16V
- LS1024EU/LS2024EU: 32V
Charge Circuit Voltage Drop: ≤0.26V (for all models)
Discharge Circuit Voltage Drop: ≤0.15V (for all models)
Self-consumption: ≤6mA (for all models)
Temperature Compensation Coefficient (TEMPCO): -5mV/°C/2V (reference value, compensates equalize, boost, float, and low voltage disconnect voltage)
Environmental Parameters:
- Working Temperature: -35°C ~ +55°C
- Storage Temperature: -35°C ~ +80°C
- Humidity: <95% N.C.
Enclosure: IP30
Mechanical Parameters (Dimensions - Overall, Mounting, and Weight):
- LS0512EU:
  - Overall: 109.7(4.32)x65.5(2.58)x20.8(0.82)mm(inches)
  - Mounting: 100.9(3.97)mm(inches)
  - Terminal: 2.5mm²
  - Weight: 95g
- LS1012EU:
  - Overall: 120.3(4.74)x67(2.64)x21.8(0.86)mm(inches)
  - Mounting: 111.5(4.39)mm(inches)
  - Terminal: 4mm²
  - Weight: 103g
- LS1024EU:
  - Overall: 120.3(4.74)x67(2.64)x21.8(0.86)mm(inches)
  - Mounting: 111.5(4.39)mm(inches)
  - Terminal: 4mm²
  - Weight: 102g
- LS2024EU:
  - Overall: 148(5.83)x85.6(3.37)x34.8(1.37)mm(inches)
  - Mounting: 138(5.43)mm(inches)
  - Terminal: 6mm²
  - Weight: Not specified in table, but implied to be similar to other models.

Usage Features:

Battery Type Compatibility: Designed for use with Gel, Sealed, or Flooded batteries. The controller allows for selection of the battery type (Sealed lead acid, Gel, or Flooded) through a setting operation, ensuring appropriate charging parameters.
LED Indicators: Provides clear visual feedback on the system's status:
- Charging Status Indicator (LED1): Indicates normal charging (On) or overvoltage (Fast Flashing).
- Load Status Indicator (LED2): Indicates load ON (On), load OFF (Off), or overload (Slowly Flashing).
- Battery Status Indicators (LED1, LED2, LED3, LED4): These LEDs, in combination, indicate the battery voltage state, including under voltage and over discharged conditions.
Load Work Mode Setting: A setting button allows users to control the load output (ON/OFF). The USB output is active only when the Load Work Mode is ON.
Temperature Compensation: Automatically adjusts charging and discharging parameters based on ambient temperature, which helps to improve battery lifetime.
Electronic Switch: Utilizes MOSFET as an electronic switch, eliminating the need for mechanical switches and enhancing reliability.

Maintenance Features:

Protection Functions: The controller incorporates several electronic protection mechanisms to ensure system safety and longevity:
- Load Overload Protection: Disconnects the load with a short delay if the current exceeds 1.25 times the rated current. The overload must be cleared by reapplying power or pressing the setting button.
- Load Short Circuit Protection: Automatically protects against load wiring short-circuits (exceeding 2 times the rated current). After one automatic reconnect attempt, the fault must be cleared by reapplying power or pressing the setting button.
- Battery Reverse Polarity Protection: Fully protects against incorrect battery wiring without causing damage to the controller. Normal operation resumes once the wiring mistake is corrected.
- Damaged Local Temperature Sensor Protection: If the temperature sensor is short-circuited or damaged, the controller will operate at a default temperature of 25°C to prevent battery damage from overcharging or over-discharging.
- High Voltage Transients Protection: The PV input is protected against high voltage transients. For lightning-prone areas, additional external suppression is recommended.
Troubleshooting Guide: The manual provides a troubleshooting section to help users identify and resolve common issues based on LED indicator behavior, such as PV array disconnection, battery overvoltage, battery undervoltage, load overload, load short circuit, battery voltage lower than 6V, and solar module input voltage lower than battery voltage.
No User Serviceable Parts: The controller is designed without user-serviceable parts, emphasizing that users should not attempt to disassemble or repair it.
Installation Safety: Emphasizes the importance of reading all instructions, wearing eye protection, using insulated tools, ensuring sufficient ventilation, avoiding direct sunlight and water ingress, and confirming tight power connections to prevent excessive heating. External fuses/breakers are required for installation.

Epsolar LandStar LS1024EU Specifications

General

Model	LS1024EU
System Voltage	12V/24V Auto
Rated Charge Current	10A
Rated Load Current	10A
Max. PV input power (12V)	130W
Max. PV input power (24V)	260W
Max PV Input Power (12V)	130W
Max PV Input Power (24V)	260W
Max. PV open circuit voltage	50V
Charge Circuit Voltage Drop	≤0.26V
Discharge Circuit Voltage Drop	≤0.15V
Type	PWM
Operating Temperature	-35°C to +55°C
Temperature Compensation	-3mV/°C/2V (Default)
Protection	Overload, Short circuit, Reverse polarity
Working Temperature	-35°C to +55°C