--- title: Modbus Returning Values of 0 on Samsung description: "You will be able to identify this issue through the installer app. You will see returning values of all 0's on the Modbus page.  Open the installer settings. To do this you will need to: Press and hol" --- [Skip to content](https://help.homelyenergy.com/knowledge/modbus-returning-values-of-0-on-samsung#main-content) English Show submenu for translations [Contact us](https://help.homelyenergy.com/knowledge/kb-tickets/new?hsLang=en) [![Homely logo white.png\]](https://help.homelyenergy.com/hs-fs/hubfs/Homely%20logo%20white.png?height=40&name=Homely%20logo%20white.png)](https://help.homelyenergy.com/knowledge?hsLang=en) Open main navigation Close main navigation - English Show submenu for translations - [Contact us](https://help.homelyenergy.com/knowledge/kb-tickets/new) How can we help? - There are no suggestions because the search field is empty. 1. [Knowledge base](https://help.homelyenergy.com/knowledge?hsLang=en) 2. [Installer Troubleshooting](https://help.homelyenergy.com/knowledge/installer-troubleshooting?hsLang=en) 3. [Samsung](https://help.homelyenergy.com/knowledge/installer-troubleshooting?hsLang=en#samsung) # Modbus Returning Values of 0 on Samsung ### Diagnosis You will be able to identify this issue through the installer app. You will see returning values of all 0's on the Modbus page.  ### Solution 1. Go to the Samsung Controller Unit 2. Open the installer settings. To do this you will need to: 1. Press and hold up and down arrows on the home screen 2. Enter password 0202 3. Select the “Indoor Unit Option”   ![Samsung Controller](https://help.homelyenergy.com/hs-fs/hubfs/Samsung%20Controller.png?width=359&height=351&name=Samsung%20Controller.png) 4. Select "Address"   ![Samsung Controller 5](https://help.homelyenergy.com/hs-fs/hubfs/Samsung%20Controller%205.png?width=369&height=368&name=Samsung%20Controller%205.png) 5. Select "Main Address"   ![Samsung Controller 2](https://help.homelyenergy.com/hs-fs/hubfs/Samsung%20Controller%202.png?width=442&height=418&name=Samsung%20Controller%202.png) 6. Under "New Address" enter 0 0   ![Samsung Controller 4](https://help.homelyenergy.com/hs-fs/hubfs/Samsung%20Controller%204.png?width=368&height=371&name=Samsung%20Controller%204.png) 7. You will be prompted “Do you want to save your changes?”. You must select "OK"   ![Samsung Controller 3](https://help.homelyenergy.com/hs-fs/hubfs/Samsung%20Controller%203.png?width=372&height=319&name=Samsung%20Controller%203.png) 8. Then you will be prompted “Do you want to change the address of another indoor unit?”. 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