Why is there an error code on my Rinnai Water Heater?

If your Rinnai displays an error code 05, you need to restart the water heater and open the hot water faucet. This code is not observed on all Rinnai water heaters. Measuring the resistance of the bypass flow control can help in determining the problem. If the error code persists, you may need to replace the bypass servo.

What does the Rinnai error code 10 mean?

Rinnai error code 10 means that the air supply or the exhaust has been blocked. To fix the Rinnai error code 10, you need to ensure that the exhaust, vent pipes, condensation collar, and fans are installed and connected correctly and not blocked in some way. They should also be of correct length and diameter.

Is it a good idea to buy Rinnai?

Don’t buy Rinnai. Any company that will not assist in troubleshooting their product with a competent individual should not get your business. They have made the conclusion that NOBODY is competent other than their own chosen installers. So be it. Tell ’em to pound sand. There are plenty of other units that are suitable. Name one company that will.

How to troubleshoot a Rinnai tankless air unit?

Turn off gas valve feeding the appliance. Unplug igniter wire; hold the igniter wire with an insulated pair of pliers about a 1/4″ from a piece of metal. Cycle the unit to ensure you see a spark when unit is cycling.

Is there a charge for a Rinnai tankless water heater?

This means that at no cost to you, we may receive a small commission for made purchases. Since Rinnai water heaters are one of the most advanced tankless water heaters available, we recommend to contact a service technician that’s authorized to work on Rinnai water heaters.

What’s the Rinnai code for the heat exchanger?

To fix this error code, you need to flush the heat exchanger. If this does not work, you may need to replace the heat exchanger. Rinnai error code 00 will usually be replaced by LC code, followed by a number between 0 to 9 in the maintenance code history.

Can a service technician work on a Rinnai Water Heater?

Since Rinnai water heaters are one of the most advanced tankless water heaters available, we recommend to contact a service technician that’s authorized to work on Rinnai water heaters.

What does error code 05 on Rinnai Water Heater mean?

How to Fix: Turn off power supply to the unit and then turn back on. Open a hot water tap to fire up the unit. If error code “05” reappears, bypass valve will need replacing. What it Means: Circulation flow rate has dropped below 2.1 gpm.

Why is my Rinnai tankless water heater not draining?

Confirm the condensate line has an air gap between unit and drain line leaving the unit. Check for loose, broken, or damaged connections from sensor to the PC board. If tank is correctly draining but error code 25 persists, replace the condensate tank and sensor.

Why is the thermal fuse activated on my Rinnai Water Heater?

The thermal fuse has been activated due to the high temperature in the combustion chamber and venting. Ensure that there is no blockage in the vent system (lack of combustion air). Clean or replace the heat exchanger if it is dirty, has the scale buildup, debris burning, or is damaged.

What to do if your water heater has an error code?

How to Fix: Assuming gas type and pressure are correct and there is no air in the gas line or other problem with the gas supply, confirm that: there are no loose connections at the PC board, power supply or flame rod, gas solenoid valve doesn’t have a short circuit, there is no obstruction in the venting system and gases are correctly venting out.

What to do if your Rinnai says error code 02?

The Rinnai error code 02 cannot be fixed by the user, and the only solution is to make a service call and have a certified technician inspect your Rinnai. If you live in an area with routine freezing winter temperatures, we’ve put together the article Maintaining Tankless Water Heaters in Freezing Temperatures.

What causes sediment build up in Rinnai Water Heater?

The high concentration of mineral deposits in water is the leading cause of the sediment build-up, especially in the heat exchangers. Rinnai tankless heaters are equipped with the “Scale Control System” that provides limescale and corrosion protection.

What does the Rinnai error code 63 mean?

Rinnai error code 63 means there is a problem with the water flow and that it may have dropped below 1.3 GPM. Check if the water is running as normal, check all the filters, ensure there is no air bleeding and no air in the system, check the thermal bypass valve if installed.

Why is my Rinnai tankless water heater beeping?

Press the “Priority button” on the temperature controller. The green Priority light will glow indicating that this controller is controlling the temperature and that the Rinnai Tankless Water Heater is ready to supply hot water. IMPORTAnT: The priority can only be changed while no hot water is running.

What to do if your Rinnai heat exchanger keeps beeping?

How to Fix: Flush the heat exchanger as per the recommended flushing procedure found in the owner’s manual. To temporarily reset the code, press the ON/OFF button 5 times. This will allow the unit to operate for 70 hours after which another LC code will lock the unit from operating.

Can a Rinnai Water Heater be used with natural gas?

Rinnai Tankless Water Heaters are only compatible with natural gas or liquid propane for maximum operating efficiency. You will have to extend the gas line to accommodate your Rinnai tankless water heater in most cases. Gas lines are typically ½” to ¾” and will work with a Rinnai system, but 1” is more fitting for a tankless water heater.

Why does my water heater make a beep noise?

A water heater may sound a beep to warn that there is a water leak. Beeping may also signal a gas leak. Low Fuel. Some propane-fueled water heaters emit a beep when they are low on fuel.

What is the error code for Rinnai Water Heater?

Each Rinnai unit uses a temperature controller (either MC-91-1 or MC-91-2) on the front panel to display various configuration options for installation as well as error codes for when problems arise. The previous nine error codes are stored in memory.

When does a Rinnai natural gas heater quit?

The tankless has been … read more I have a Rinnai RHFE-263FA Direct Vent Wall Furance installed in 2004. When the heater is turned on it fires but only lasts about 10 seconds and then quits. I get an error code #12, (flame failure).

Is there an error code on the Rinnai Water Heater?

The heat is just off. Then about 30 seconds to a minute later, the Rinnai water heater will fire up and start producing hot water again. There are no error codes. The display consistently and always displays “120”.

How to clear an error code on a Rinnai split unit?

After unplugging the AC unit, wait for a few minutes before plugging the unit back into power. After a few minutes, plug the unit back in and turn on power. This “Error Code Reset Procedure”may help to reset the control board (computer)and clear the error code or flashing lights from your Rinnai Split System AC Unit.

What does error code 63 mean on Rinnai?

Error Code 63 What it Means: Circulation flow rate dropped below 1.3 gpm. How to Fix: Use temperature controller to display flow rate (hold UP for 3 seconds and press the ON/OFF button).

How does the Rinnai hydronic air handler system work?

Rinnai Vent-Free Convectors push heat to the farthest reaches of the room, evenly warming larger spaces and maximizing cost-savings. The Rinnai Hydronic Air Handler System easily integrates with select tankless water heaters or boilers to deliver energy-efficient warmth.

What does error code 05 mean on a water heater?

What it Means: Bypass servo fault (on all water heaters with bypass valves). How to Fix: Turn off power supply to the unit and then turn back on. Open a hot water tap to fire up the unit. If error code “05” reappears, bypass valve will need replacing. What it Means: Circulation flow rate has dropped below 2.1 gpm.

What does the Rinnai error code 79 mean?

Rinnai error code 79 means the sensor detected a water leak. To fix the Rinnai error code 79, ensure the leak sensor and piping are in good condition and there are no damaged or loose connections. To fix the Rinnai error code 79, ensure the leak sensor and piping are in good condition and there are no damaged or loose connections.

What does it mean when your hot water heater does not work?

What it Means: Water heater will not work during freeze protection mode. How to Fix: Place a service call. What it Means: Power interruption during Bath Fill (Water will not flow when power returns). How to Fix: Turn off all the hot water fixtures in the house. Press the ON/OFF button twice to reset the unit and code.