No charge in daylight

EPEVER Solar Charge Controller: “No charge in daylight”

warning RV solar charge controller error codes

Safety PV wiring is live and energized DC whenever light hits the panels. Open the PV disconnect before working on connections, never break a PV connection under load, and use a correctly rated meter.

What it means

Two related no-charge indications: the green PV/charging indicator OFF while the sun is on the panels points to a PV array disconnection or wiring fault, and a steady orange battery indicator means the battery is in an under-voltage state.

Most likely causes

PV array disconnected, loose, or wrongly wired (no PV reaching the controller) most likely
Blown PV fuse / open PV breaker, or fully shaded/covered panels common
Battery drawn down to under-voltage (orange indicator) faster than solar can recharge it common

Safe checks you can do yourself

In daylight, confirm the PV indicator behavior matches conditions; green off in good sun suggests a PV problem (note: green slowly flashing simply means night/no PV voltage)
With the PV disconnect open, measure array voltage at the controller's PV terminals to confirm power is present and connections are tight
Check the PV fuse/breaker and inspect for loose or reversed PV wiring
Measure battery voltage if the orange under-voltage indicator is on

How to reset / clear No charge in daylight

Restore and tighten the PV connection / replace a blown PV fuse so charging can resume
Let the battery recharge to bring it out of under-voltage
For a controller that will not power up at all, ensure the battery provides at least the minimum activation voltage (about 9 V on Triron, about 8 V on Tracer-AN)

When to call a technician

If PV voltage is present and connections are good but the controller still shows no charging in full sun, the input stage may be faulty — have it inspected.

Applies to

EPEVER Triron N series · EPEVER Tracer-AN series · EPEVER Tracer-BN/BP series

FAQ

What does EPEVER Solar Charge Controller code "No charge in daylight" mean?

How do I reset EPEVER Solar Charge Controller No charge in daylight?

Restore and tighten the PV connection / replace a blown PV fuse so charging can resume Let the battery recharge to bring it out of under-voltage For a controller that will not power up at all, ensure the battery provides at least the minimum activation voltage (about 9 V on Triron, about 8 V on Tracer-AN)

What is the most common cause of No charge in daylight on a EPEVER Solar Charge Controller?

The most likely cause is pv array disconnected, loose, or wrongly wired (no pv reaching the controller).

Related · EPEVER solar charge controller

All LEDs fast flash — overheating
When every indicator (PV, battery and the battery-capacity l… Battery red slow flash — over-temp
The battery indicator slowly flashing red signals a battery … Battery red solid — over-discharged
A steady red battery indicator means the battery is over-dis… Green LED fast flash — battery
The battery-status indicator flashing green at about 4 Hz me… Green LED fast flash — charging
The PV/charging indicator flashing green at about 4 times pe… Load + fault — short circuit
The load and fault indicators blinking signal a load-side sh…

Sources

EPEVER TRIRON N Series Modular MPPT Solar Charge Controller User Manual — TRIRON-SMS-EL-V1.2, Section 4.1 (Charging LED OFF = no PV/night or PV connection problem; Battery LED Orange On Solid = Under voltage); Section 6.2 Troubleshooting (charging LED off in daytime = PV disconnection; controller needs at least 9 V to activate) (EPEVER (Huizhou EPEVER Technology Co., Ltd.))
MPPT Solar Charge Controller User Manual, Tracer-AN series — Tracer-AN-Manual-EN-V2.6, Section 4.2 Troubleshooting — PV array open-circuit (confirm PV connection correct and tight); controller needs at least 8 V battery voltage to activate (EPEVER (Huizhou EPEVER Technology Co., Ltd.))

Note: On single-LED Tracer-AN icon displays the 'no charge / under voltage' states are shown via the LCD icons rather than a separate orange LED. A slowly flashing green PV LED is normal at night and is not a fault.

● Last verified 2026-06-29 · compiled from manufacturer documentation. Codes can vary by model year — always cross-check your unit’s manual.