Fault Codes/Discovery Energy, LLC (Rehlko)/P0687Discovery Energy, LLC (Rehlko)P0687WarningGeneralWhat This Code MeansP0687Possible Causes•Problem with the power control relay circuit•Problem with the power control relay circuit.Suggested Actions1Check power control relay and leads2Check power control relay and leads.Related Discovery Energy, LLC (Rehlko) Fault CodesP1518 3464 13P1519 3464 13P0686P1609P0659P2100P0658P2102P0657P2103P0653P2109Browse all Discovery Energy, LLC (Rehlko) fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for P0687 on your specific Discovery Energy, LLC (Rehlko) unit — cited to the OEM manual, not a forum guess.Your question about P0687GET THE ANSWERFree account required — we'll bring your question with you.