Y&H Manuals & User Guides

Y&H, operated by Shenzhen Yonghui Fashion Co., Ltd, is a provider of renewable energy solutions specializing in solar power technology. The brand's product lineup features advanced MPPT solar charge controllers, hybrid solar inverters, and grid-tie inverters designed for effective energy management.

Y&H products cater to both residential and off-grid solar systems, offering compatibility with various battery chemistries including lead-acid, lithium-ion, and LiFePO4. Known for models like the SUN series inverters and BL912 controllers, Y&H focuses on delivering accessible solar components for DIY enthusiasts and professionals alike.

• What is the correct connection sequence for Y&H solar charge controllers?

  Always connect the battery to the controller first. This allows the device to detect the system voltage (12V/24V/etc.). Once the screen powers on, you can connect the solar panels.

• Does the Y&H solar controller support lithium batteries?

  Yes, many Y&H models serve lead-acid, lithium-ion, and LiFePO4 batteries. However, you often need to manually set the charging cut-off voltage for lithium types as the default is usually lead-acid.

• How do I restore factory settings on the BL912 controller?

  On the BL912 series, press and hold the 'Up' button for approximately 5 to 10 seconds to restore factory settings.

• What should I do if the charging current is not displaying?

  If the battery is fully charged or there is no current from the PV array (e.g., at night), the charging current will not be displayed on the screen.