A 90 error code is a common code. In most cases it is either installation or environmentally related. Bad combustion means the unit is not burning properly; either you have an issue with air, gas, or venting.
How do I fix noritz Error 90?
Noritz Error Code 90
You will need a licensed contractor to resolve this error. He or she will check gas pressures, venting length, dip switches, etc. For help with finding a licensed contractor to fix these various error codes, please use the Noritz Find a Service Rep tool.
How do I reset noritz error code?
To reset the Noritz error code: unplug the unit for 30 seconds, then re-connect. Check for blocked exhaust flue. Check for debris in fan motor. Have a professional check the gas supply pressure.
How do I fix noritz Error Code 91?
If your Noritz displays error codes 90, 91, 99, you should check the gas and gas pressure type. The flame color should be blue, not yellow, and you should remove any blockage near or around the air and exhaust vents and fan motor. The unit should be switched off entirely for this error code to be reset.
How do you troubleshoot a Noritz tankless water heater?
Problems With Temperature
- Check to see if the gas and water supply valves are fully open.
- Check if the water supply has been cut off.
- Check if the hot water fixture is sufficiently open.
- Check if the gas is being cut off by the gas meter.
- Check if the water drain valve filter is clogged.
Where do I find noritz error codes?
Every Noritz tankless water heater, either outdoor or indoor model, can be connected to the remote controller, and when the problems occur, it displays the error codes on the screen, which helps users and technicians to fix the problem.
How do you clean the burners on a Noritz tankless water heater?
Quote from the video:
Quote from Youtube video: Use compressed air to remove any remaining particles. If it's really dirty you'll want to soak it in a degreaser. The fan blade will need to be removed from the motor.
How do I fix Error 11 on my Noritz tankless water heater?
Quote from the video:
Quote from Youtube video: The 11 error code means that there was an ignition failure in other words there was either insufficient gas or lack of spark. And the heater could not ignite. Here are the minimum maximum Inlet gas
