Customer had a water heater that was not heating. They could not get the pilot to light. I tried myself but was also unable. I then called OG who denied the claim to clean off the thermal coupling because it is a lack of maintenance. I cleaned it off outside the warranty and now the pilot is lighting up fine, however it will not stay lit because the gas control valve is also bad. I called OG again and relayed this information to them and they are waiting to cover or not until they get the home inspection report to see if it is pre-existing. I found no further issues at this time. Today I returned and installed the new gas control valve. The water heater is lighting fine but it still wont stay lit. The thermal switch keeps popping and shutting the gas off to the unit. I then is installed the thermal bypass that comes with the new gas control valve and now the heater is staying lit like it’s supposed to. I found no further issues at this time.