Hi5 controllermaintenanceHi5 Troubleshooting Manual1. Troubleshooting1.1. Troubleshooting Solution1.1.6. E0022 Communication error between internal modulesOn this page1.1.6. E0022 Communication error between internal modules1.1.6. E0022 Communication error between internal modules 1.1.6.1. Outline1.1.6.2. Causes and examine methods