What to do if Rinnai REU-N2635FFC-E starts then shuts down?
If your Rinnai unit starts and then immediately shuts down, try these steps: check the power supply, check the gas cock, and ensure you open the hot water faucets more.
Why does my Rinnai REU-N2635FFC-E start then go cold?
If your Rinnai water heater starts but the water then goes cold, verify the power supply and open the hot water faucets more.
How to troubleshoot Rinnai Water Heater with no ignition?
If your Rinnai water heater fails to ignite, check that the gas is turned on at both the water heater and the gas meter or cylinder. It is recommended to schedule a service call.
What to do if Rinnai Water Heater starts then shuts down immediately?
If your Rinnai Water Heater starts and then shuts down right away, you should check the power supply and the gas cock. Also, make sure to open the hot water faucets more to ensure sufficient water flow.
Why does my Rinnai Water Heater start then the water goes cold?
If your Rinnai Water Heater starts but the water then goes cold, check the power supply. Additionally, ensure that the hot water faucets are opened sufficiently to allow enough hot water to flow.
What does 'Service Soon' mean on Rinnai REU-N2635FFC-E Water Heater?
If your Rinnai water heater displays 'Service Soon', it’s time for a service. The heat exchanger may need to be flushed to prevent damage. Refer to the flushing instruction in the manual.
How to fix Rinnai Water Heater that does not attempt to start?
If your Rinnai Water Heater isn't starting at all, you should check the power supply. You may also need to clean the water filter and inspect the water inlet on the appliance.
How to fix Rinnai REU-N2635FFC-E Water Heater that won't start?
If your Rinnai Water Heater isn't starting, you can try the following: check the power supply, clean the water filter, and inspect the water inlet on the appliance.
How to fix low water flow in Rinnai REU-N2635FFC-E Water Heater?
If you notice a reduction in water flow in your Rinnai water heater, the inlet water filter likely needs to be cleaned. It is recommended to schedule a service call.
What causes flame failure in Rinnai REU-N2635FFC-E Water Heater?
If you are experiencing flame failure or low gas flow with your Rinnai water heater, check that the gas is turned on at the water heater and gas meter or cylinder. Also, check for any obstructions to the flue outlet. It is recommended to schedule a service call.
General| Fuel Type | Natural Gas |
|---|---|
| Energy Factor | 0.87 |
| Condensing | Yes |
| Power Vent | Yes |
| Weight | 62 lbs |
| Type | Tankless |
| Temperature Range | 98-140 °F (37-60 °C) |
| Maximum BTU Input | 199, 000 BTU/h |
| Minimum BTU Input | 15, 000 BTU/h |
| Electrical Requirements | 120V |
| Ignition System | Electronic |
| Water Pressure | 15-150 psi |
| Safety Features | Freeze Protection, Overheat Protection |
Overview of the water heater's capabilities and advantages.
Essential safety precautions and symbol meanings for product use.
Details on how to operate the water heater and control panels.
Covers selectable temperatures, standard and multi-panel operation.
Specific safety information related to the operation of the appliance.
Guidance for diagnosing and resolving common issues with the water heater.
Explains error codes, maintenance, and troubleshooting tips.
Key information, regulations, and warnings for appliance installation.
Covers location, unpacking, components, dimensions, and general principles.
Details on water, gas, electrical, flue, and condensate connections.
Remote controllers, cascade communication, recirculation mode, and programming.
Commissioning procedures and the Benchmark Checklist for compliance.
Operating the PCB interface and understanding its parameters.
Gas conversion steps, orifice replacement, PCB settings, and air intake pipe replacement.
Transferring PCB data, performance data, flow charts, wiring, and diagnostics.
Cleaning, filter inspection, heat exchanger flushing, manual draining, and service indicators.
Detailed technical specifications and product fiche information.
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