---
title: "Voltage Calibration Procedures for 3000TL Models, 24P, 48P, LVM-ES and 5000ES"
description: Adjust or calibrate display values  1. Press “UP” and “DOWN” at the same time  2. Input password “111” and enter.  3. Scroll through to the parameter that requires calibration. NOTE A prefix is to Add, S Is to subtract the…
url: "https://watts247.com/docs/voltage-calibration-procedures-for-3000tl-models-24p-48p-lvm-es-and-5000es/"
updated: "2023-02-10"
category: FAQ
---

# Voltage Calibration Procedures for 3000TL Models, 24P, 48P, LVM-ES and 5000ES

Adjust or calibrate display values 

1. Press “UP” and “DOWN” at the same time 

2. Input password “111” and enter. 

3. Scroll through to the parameter that
requires calibration. NOTE A prefix is to Add, S Is to subtract the
"value" e.g 1.1 in the suffix 

4. Exit 

5. Shut down and restart the inverter