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Adjust gas manifold pressure on noritz tankless error code 16

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Posted on Jan 02, 2017

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SOURCE: Noritz Tankless error code 16

The trick with these hot water heaters is to keep the filter screen clean and flush the system with CLR periodically. Code 11 is ignition error. Is your gas valve turned on?

Posted on Dec 09, 2009

senor8
  • 73 Answers

SOURCE: getting error code 16. what does it mean and what

a 16 error code is typically caused by scale formation. I'd recommend performing a descale on the heater.

Posted on Jul 12, 2010

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1 Answer

Vibrating when the heater starts to heat water


Things to Check:

1. incoming gas pressure (minimum 5" when unit firing)
2. Make sure damper on top of unit isn't sticking
3. check vent length and #elbows versus installation manual specs
4. if above 2000', disconnect high elevation termination

If these all check out, you'll probably need to do a manifold adjustment. Call Noritz for assitance on this.

Apr 09, 2011 | NORITZ Natural Gas Tankless Water Heater...

1 Answer

The Noritz HW Heater has been tripping out some (usually whenever the shower is running, and someone turns on cold water). LED flashing three times. Any Ideas


This is probably a 16 error code. This code indicates the outlet water spiked above the set temperature for an extended period. It usually means the heater needs to be descaled or the manifold pressures need to be adjusted.

Mar 10, 2011 | Noritz 6.3 Gallon Residential Tankless...

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What is error code 043 on NORITZ tankless heater?


There is no error 43 on a NR71. There is a 73 error code which is caused by disconnecting jumper cables while the power is on.

Oct 29, 2010 | Noritz 7.1 Gpm Propane Lp Gas Tankless Hot...

1 Answer

I have a Nortitz natural gas water heater, model #N-063s-1. Acouple of days ago it stopped heating the water. what can I do myself to fix this matter. Thanks, lynnatheana@hotmail.com


There are many reasons a tankless heater will stop heating water. The first thing I would look for is a flashing red light on the burner indicator. The flash break down goes as follows

continuous blinking - typically means ignition failure or the unit is overheating; look for visible water inside the unit, have your gas pressure checked, or check the flame rod/igniter for buildup of debris

three blinks - typically indicates 16 error code; typically resolved by performing a descale

4 or 5 blinks - exotic error codes; for these you should definitely contact Noritz tech support

If there is no flashing light, first check your filter for debris. If the filter is clean, your flow sensor is probably stuck. Again I'd recommend contacting Noritz tech support to help you clean the flow sensor.

Jul 31, 2010 | Noritz 6.3 Gallon Residential Tankless...

1 Answer

Getting error code 16. what does it mean and what


a 16 error code is typically caused by scale formation. I'd recommend performing a descale on the heater.

Mar 06, 2010 | Noritz 6.9 Gallon Residential Direct Vent...

1 Answer

Sometimes the hot water just goes cold


Here are a couple things to look for:

1) flashing burner light - a flashing burner light indicates the unit is getting an error code
common error codes:
A. continuous flashing - ignition failure or abnormal combustion; look for visible water in the machine indicating a leak, check gas pressure, debris or buildup on flame rod/igniter plug, or clean unit with compressed air
B. 3 flashes - error 16, abnormal outlet water temperature; typically this code indicates you'll need to descale you unit
C. 4 or 5 flashes - exotic error codes; you should contact Noritz technical support to deal with these codes

2. If there is no flashing code, try increasing the hot water flow. In the summer time you typically use less hot water; this can result in intermittent operation of your tankless heater. Increase water flow by either: A. cleaning your showerhead and removing scale deposits B. widening your flow restrictor C. Remove your flow restrictor in the showerhead

3.If none of these resolves your problem, you probably have debris in your flow sensor. Contact Noritz technical support for a walkthrough on removing debris from a flow sensor.

Feb 18, 2010 | Noritz 6.3 Gallon Residential Tankless...

1 Answer

Noritz Tankless error code 16


The trick with these hot water heaters is to keep the filter screen clean and flush the system with CLR periodically. Code 11 is ignition error. Is your gas valve turned on?

Oct 17, 2009 | Noritz 6.9 Gallon Residential Direct Vent...

2 Answers

What is error code 59 on a noritz tankless water heater lp?


The 59 code is typically caused by insufficient gas supply to the unit. It can also be caused by obstructed exhaust flow, stuck exhaust damper (located directly on top of the unit's exhaust), insufficient makeup air, or improperly installed venting (i.e. too long or too many elbows).

I would recommend initially checking the incoming gas pressure at the gas connection on the unit. The gas pressure should not drop below 5" water column for a natural gas unit, 8" for a propane system (the unit need to be operating at its maximum output).

Apr 29, 2009 | Noritz 7.1 Gpm Propane Lp Gas Tankless Hot...

2 Answers

Noritz tankless water heater not producing hot water


I called Noritz error code 16 is a overheat problem. Noritz say's to flush your coil with vinegar or CLR.
Use a small pump to recirculate the CLR or vinegar through the system for 45 minutes and flush with fresh water. This worked for me.

Jan 04, 2009 | Noritz 6.9 Gallon Residential Direct Vent...

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