Questions & Answers for: noritz error code 90

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Question about 6.9 Gallon Residential Direct Vent Tankless Water Heater - N

4 Answers

...error code blinks three times. Any idea what that means? Probably a 12 or 21 code. Neither of which a Consumer can do ANYTHING about. Call Noritz 1-888-382-6568 and they will have a Regional ...

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Question about 6.9 Gallon Residential Direct Vent Tankless Water Heater - N

1 Answer

...Noritz hot water heat is blinking and the burner light will not stay on. what the error code on the unit? if you hold the up and down arrow keys and scroll to the number 90-99 it will give you the ...

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Question about 6.9 Gallon Residential Direct Vent Tankless Water Heater - N

1 Answer

Noritz Tankless error code 16 I also have a Noritz tankless with the error code 16 problem. Tried flushing it with diluted CLR for 90 minutes but it did not help. Know what else it could be? The trick

Question about Tankless Water Heaters N-0931M

1 Answer

...error code is caused by two conditions: 1) the unit is under heating the water (not hitting the set temperature) 2) the fan is encountering resistance to air flow, which causes it to over correct The ...

Question about 6.9 Gallon Residential Direct Vent Tankless Water Heater - N

3 Answers

...Noritz tech support and they state this error is a general combustion/exhaust/air flow error. Here is what they suggested to look at. Gas Pressure ? The unit has a minimum flow rate for the incoming ...

Question about 6.3 Gallon Residential Tankless Water Heater - N-063S

1 Answer

Noritz remote controller "RC-7646m-1" seems to need to be restarted several times throughout the day. Usually what happens is out of nowhere, it'll just lose it's temperature reading (at usually 140),

Question about 6.3 Gallon Residential Tankless Water Heater - N-063S

1 Answer

...turn off after a couple minutes my water heater control shows 90 the 90 error code will be caused by one of two things: 1. the incoming gas pressure is low 2. the unit is dirty and needs to be ...

Question about Commerical Tankless Water Heater N-132M-ASME-NG

1 Answer

...error code 21. Unit gas pressure is at 8.5wc and manifold pressure spikes to 2 when it come on but unable to see what it remains at because unit shuts down immediately. Can not fins any other ...

...Noritz NR98-DVC for a couple of years. Unit is not functioning properly. What, if any, damage could result from using this hard water? Could there be Did annual maintenance of flushing the water ...

...code 71 flashes. The Noritz Manual shows fixed for the following error codes: 11 21 90 99 For all other codes this is the recommendation: Contact our sales agent if: • Any other error code

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