Skip to content ⚡ NEW · Free Battery Backup Calculator — built on real lab discharge tests →
Su-vastika — A Rotomag Company
Enquire Now
solar PCULCD messagestroubleshootingMPPTsolar hybrid PCU

Solar PCU LCD Display Messages Explained — Backup Mode, Mains Mode, Faults & Rotary Switch

By Kunwer Sachdev · Published 5 June 2026
Solar PCU LCD Display Messages Explained — Backup Mode, Mains Mode, Faults & Rotary Switch
Kunwer Sachdev, the Inverter Man and Solar Man of India
Kunwer Sachdev

Founder of Su-Kam and Kunwwer.ai, and mentor at Su-vastika and several other companies — the “Inverter Man of India” and the “Solar Man of India.” Read his story →

Follow Kunwer Sachdev: LinkedIn YouTube Instagram X Facebook
Disclaimer: It is important to note that while Mr. Kunwer Sachdev founded Su-Kam Power Systems, he is no longer associated with the company as of 2019. Any information regarding his involvement in the company’s operations, strategies, or future plans reflects his tenure prior to that date. Therefore, any discussions or analyses of Su-Kam Power Systems should be considered in the context of his past contributions and not his current association with the company.

Part of the Series

Solar PCU & MPPT Charge Controllers: Complete Guide
Read Guide →

Explore Products

Su-vastika Solar PCU

25+ patents · Made in India · 10,000+ installations

View Solar PCU →

Related Articles

29 June 2026

MPPT Solar Charge Controller for 12V Systems: How It Works & Why It Charges Faster

On a 12V solar system the panel peaks near 17.2V but the battery only wants ~14V. An MPPT charge controller turns that voltage gap into extra charging current with a buck DC-DC stage - here is exactly how it works, and why it beats PWM.
20 June 2026

Su-vastika Solar PCU 5500: Every Power-Flow Condition, Explained with Diagrams

A condition-by-condition visual guide to the Su-vastika Solar PCU 5500 — grid charging, solar sharing, save-the-bill mode, power-cut backup, float and low-battery sleep, plus its protection logic — each with an animated power-flow diagram.
5 June 2026

How to Connect Your Solar PCU to the App: Bluetooth and Wi-Fi Step-by-Step Guide

The BLE and Wi-Fi dongle turns your Solar PCU into a smart system you can monitor and control from your phone. This step-by-step guide covers both Bluetooth and Wi-Fi connection methods — dongle setup, scanning, pairing, OTP login, and adding your device for remote monitoring.