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What is Noritz Error Code 90
If you have a Noritz tankless water heater, you may have come across error code 90. This code indicates that the unit is not receiving enough water flow to operate correctly. There are a few things that can cause this problem, and fortunately, it is usually an easy fix.
One common cause of error code 90 is simply that the water heater is not turned on all the way. The unit has a knob that must be turned to the “on” position, and sometimes this knob can get bumped and turned back to the “off” position without you realizing it. Just give the knob a turn to the right until it stops and see if that clears up the error code.
If the water heater is turned on all the way and you’re still getting error code 90, then the next thing to check is the water pressure. The minimum water pressure required for the Noritz tankless water heater to operate is 1.5 gallons per minute, so if your water pressure is lower than that, it will cause the error code. You can check your water pressure with a simple gauge that you can purchase at any hardware store.
If the water pressure is good but you’re still getting error code 90, then there may be something wrong with the water heater itself. In this case, you’ll need to call a professional to come take a look and diagnose the problem.
How to Fix Noritz Error Code 90
If you have a Noritz tankless water heater, you may have come across error code 90. This code indicates that the unit is not receiving enough water flow to operate correctly. There are a few things that can cause this problem, and fortunately, it is usually an easy fix.
One common cause of error code 90 is simply that the water heater is not turned on all the way. The unit has a knob that must be turned to the “on” position, and sometimes this knob can get bumped and turned back to the “off” position without you realizing it. Just give the knob a turn to the right until it stops and see if that clears up the error code.
If the water heater is turned on all the way and you’re still getting error code 90, then the next thing to check is the water pressure. The minimum water pressure required for the Noritz tankless water heater to operate is 1.5 gallons per minute, so if your water pressure is lower than that, it will cause the error code. You can check your water pressure with a simple gauge that you can purchase at any hardware store.
If the water pressure is good but you’re still getting error code 90, then there may be something wrong with the water heater itself. In this case, you’ll need to call a professional to come take a look and diagnose the problem.
What is the Reason Behind This noritz error code 90
As we mentioned before, Error Code 90 on your Noritz tankless water heater indicates that the unit isn’t receiving enough water flow to function properly. This can be caused by a few different things, but fortunately, it’s usually an easy problem to fix.
One common reason for Error Code 90 is simply that the water heater isn’t turned on all the way. The unit has a knob that must be turned to the “on” position, and sometimes this knob can get bumped and turned back to the “off” position without you realizing it. Just give the knob a turn to the right until it stops, and see if that clears up the error code.
If the water heater is turned on all the way and you’re still getting Error Code 90, then the next thing to check is the water pressure. The minimum water pressure required for the Noritz tankless water heater to operate is 1.5 gallons per minute, so if your water pressure is lower than that, it will cause the error code. You can check your water pressure with a simple gauge that you can purchase at any hardware store.
If the water pressure is good but you’re still getting Error Code
90, then there may be something wrong with the water heater itself. In this case, you’ll need to call a professional to come take a look and diagnose the problem.
Here are the list of Noritz error code:
Noritz Error Code 11
This error code is caused by a problem with the igniter.
Noritz Error Code 12
This error code is caused by a problem with the flame sensor.
Noritz Error Code 13
This error code is caused by a problem with the gas valve.
Noritz Error Code 14
This error code is caused by a problem with the water temperature sensor.
Noritz Error Code 15
This error code is caused by a problem with the exhaust temperature sensor.
Noritz Error Code 16
This error code is caused by a problem with the pressure sensor.
Noritz Error Code 17
This error code is caused by a problem with the flow sensor.
Noritz Error Code 18
This error code is caused by a problem with the water inlet valve.
Noritz Error Code 90
This error code is caused by a lack of water flow to the unit.
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