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Noritz 7.1 Gpm Propane Lp Gas Tankless Hot Water Heater Questions & Answers
Code 73 on a noritz
73 code is a circuit board error. It typically occurs if you connect or disconnect anything in the heater with power on. Try disconnecting electricity for 20 seconds to reset the unit. If the problem continues, you may need to replace your circuit board.
NORITZ 3RED LIGHT FLASHES MINIMAL WATER NOT HOT
Go over to unit and with somebody else turning on the water listen for the ignition to kick in it will make a tick, tick sound if you dont hear the tick, tick sound you have a faulty igniter. Hope this gets you in the right direction.
What is error code 59 on a noritz tankless water
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).
How to clear error code 78 on a noritz tankless
For a Noritz tankless water heater, error number 78 indicates a problem with the fan motor. The instructions below will help you clear the problem number 78 on a Noritz tankless water heater:
- Turn off the power to the tankless water heater by either disconnecting it or switching off the circuit breaker.
- Verify that the fan motor is clear of any obstructions or debris that may be preventing it from operating properly.
- Check the fan motor is receiving power by measuring the voltage across the fan leads with a voltmeter. Verify that the electrical connections to the fan motor are secure if there is no voltage.
- If the fan motor is broken or not operating properly, it may need to be replaced. For further assistance with the repair or replacement of the fan motor, you can contact Noritz technical support or a certified HVAC specialist.
- After resolving the issue with the fan motor, switch off the power to the tankless water heater for at least 30 seconds before turning it back on. This will clear the error code and restore normal operation to the device.
- If you are unclear or uncomfortable with any of these processes, you should seek the aid of a certified HVAC specialist or Noritz technical support.
Noritz Tankless Water Heater - Error Code 20 - Priority Light Flashing - EZ98DV
Error Code 20 on a Noritz tankless water heater (model EZ98DV) is typically associated with an issue with the "priority" function, which is a feature that allows the water heater to prioritize certain uses of hot water over others.
When the "priority" light is flashing and error code 20 is displayed, it typically means that there is a problem with the priority function and it needs to be reset.
To fix this issue, you can try the following steps:
- Turn off the power to the water heater by turning off the circuit breaker or removing the fuse.
- Wait for about 10 seconds and then turn the power back on.
- Press and hold the "priority" button for about 5 seconds, until the "priority" light turns off.
- Turn the water heater back on and check to see if the error code has cleared and the "priority" light is no longer flashing.
If the error code 20 still appears and the priority light is flashing, it's best to consult the manual or a professional technician to diagnose the problem.
It's important to note that the error code 20 can also be caused by other issues such as, faulty thermistor, faulty thermistor harness, faulty PCB, etc. So, it's best to get it checked by a professional.
My noritz water heater: error code: 11. It is an N-0931m. Thanks
Code 11 is ignition failure.
Ensure that your gas is turned on.
Start by checking the vent system to ensure there is no obstruction or separation in the vent system.
Second I would recommend flushing the water heater with vinegar or Rectorseal Calci-Free. Calcium and scale build up in tankless water heaters can cause several failures that are not directly related to the specific code displayed on the heater.
If the problem persist I would look for a plumber that is familiar with tankless water heaters.
NORITZ CB BOILER BURNER NOISE
You should try to describe the noise and what is happening when the noise occurs. Then someone may be able to give you some diagnosis of the problem. For example, does it make a big boom sound went it lights the burners? Then you might need to clean and adjust the pilot light.
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