If you have a Rinnai system, you may be experiencing a problem with an error code. This error code is often caused by a faulty component on the system. To solve the problem, you should first check the system’s wiring and inspect the thermal fuse. If this doesn’t fix the problem, you can try to replace the thermal fuse or clean the filter. If that doesn’t fix the problem, you may need to repair the airflow or combustion chamber of the unit.
If the error code continues, it is likely caused by a blockage inside the water heater. If it’s the cause of the problem, you should get your Rinnai repaired as soon as possible. Other causes of the error code include faulty wiring, a failed water valve controller, a blocked water filter, or reverse hot and cold water lines. If you suspect your Rinnai may be faulty, you should contact a qualified technician who can fix the problem for you.
If you suspect a gas-related issue, check the gas pressure and gas supply. Make sure that you have the right gas pressure to start the appliance. You can test this by turning on the hot water tap and looking for blue flames. If you notice a blue flame, the CO sensor may be faulty. If it is, flush it with hot water and replace it. If you still can’t resolve the error, contact your technician for assistance.
If the flow rate has dropped to under 2.1 GPM, then you need to contact your service provider. You can also check your vent system for blockages or other problems. In some cases, the problem is as simple as a blocked exhaust pipe. To fix the problem, you can either clean the venturi or reduce the temperature in the room. If the error persists, call a qualified technician for help. You should have your machine fixed within an hour*.
Another reason you may have a Rinnai error code 10 is that the PCB board is not operating correctly. If this is the case, you should take your unit to an electrical service technician. In most cases, a faulty PCB board can cause the error. You should also check the dip switches to ensure that they are functioning correctly. The presence of moisture on the PCB board may be the cause.
Another reason you may see a Rinnai error code 10 is that the unit is not working properly in freeze protection mode. Another reason you might have this error code is that the primary air fan or outlet flue are blocked. To clear these issues, you need to reset the unit by turning it off and on for 30 seconds. You can also test the startup of a tankless gas hot water unit by running a hot tap.
After checking the components, you can check the venting system to see if there is any blockage. The system may be blocked if the venting system is not properly connected or sized. You can also check the venting system by removing the exhaust pipe or turning on the water heater. In case you notice this error code, you should contact a Rinnai service center. The service team can replace the parts needed for the unit.