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Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 20541
Experience:  40+ yrs. experience as a licensed oil & gas technician.
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My Noritz tankless is not heating water

Customer Question

my Noritz tankless is not heating water
Submitted: 10 months ago.
Category: HVAC
Expert:  Rick replied 10 months ago.
Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of you situationAre you getting an error message on the display?
Customer: replied 10 months ago.
the powe button was blinking, I turned it off then on again.
Expert:  Rick replied 10 months ago.
Do you have a digital display? if so what's on the display? what is the model number of your unit?
Customer: replied 10 months ago.
on display its 120
Expert:  Rick replied 10 months ago.
I need the model number of your unit
Expert:  Rick replied 10 months ago.
If you don't know the model number then this is what I suspect is the problem. Your display is showing the water temp that the heater is registering. If the water isn't hot then the water temp sensor in the heater is malfunctioning. It's not firing up because the sensor is telling it the water is already hot. You're going to need to call a pro to check this out.
Customer: replied 10 months ago.
I think its 009749
Expert:  Rick replied 10 months ago.
I'm sorry that's not a model number. The model number starts with 1 to 3 letters. But even if you can provide the number my previous assessment is probably the most likely culprit based on your description.
Customer: replied 10 months ago.
I didn't see a previoius assessment.
Customer: replied 10 months ago.
ok founf it
Expert:  Rick replied 10 months ago.
Testing/replacing a sensor isn't a do it yourself project.
Expert:  Rick replied 10 months ago.
Do you have any more questions?

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