I have gone through multiple wiring setups on my RV and am running into the same error on my hr24 when progressing through satellite setup. Any suggestions would be great. Here is what I have: hr24 and h24 SWM LNB SL3 one coax to 8 way splitter (all unused outs are capped.) Two coax out from splitter, one to hr24 and the other is the power out (red) to 21 volt inserter, out from inserter to h24. H24 runs through setup with no errors but hr24 gets error on tuner 1 odd on 103. It says check install. I have tried many different setups by moving the power inserter to each receiver and also sending a third coax to it as a standalone. I have good signal strength and can't seem to isolate the problem. I even ran a single coax directly to the HR24 to ensure the interior wiring of the RV was the correct type of coax. Same error. Would replacing the power inserted with the 29 volt series have any effect and/or would it harm my receivers? I'm at a loss. Please help.