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Join The Arkansas Mission of Mercy (ArMOM) in hosting a free dental clinic April 11- 12, 2025 at Conway Expo Center, located at 2505 E Oak St, Conway, AR 72032.
Starting time is at 2:00 AM (early morning - not PM) each day, and patients (including children and adults) will be treated on a first-come, first-served basis. Generally you should be in line by midnight according to live news updates covering this event.
No appointments are needed, and there are no income or eligibility requirements.
Services provided include cleaning, fillings, and extractions - at no charge!
Get details at: The Arkansas Mission of Mercy (ArMOM) Website - Go to "Event Info"
http://arkmissionofmercy.com/
Complaint: No Hot water - Noritz NR C98DV Tankless Water Heater - Code 51 on Display Remote
Model NRC98DV... NR: Stands for Noritz Residential, C: Indicates Condensing unit (use a second heat exchanger to extract heat from exhaust gases), 98: maximum flow rate, 9.8 gallons per minute (GPM), DV: Direct Vent, uses a sealed venting system to draw air from outside for combustion
Let's get started... There is no hot water from my Noritz NRC98DV tankless water heater and is displaying Error Code 51 – which indicates gas manifold solenoid failure. This code is activated when there is insufficient gas flow and the unit shuts down.
Failures from Error Code 51 ranges from poor gas valve connection to a defective solenoid valve. Upon inspection and testing, water leaked into the gas manifold and caused the solenoid to malfunction.
What caused this problem? The problem was caused by a leaky heat exchanger. The heat exchanger in a tankless water heater is where cold water passes over superheated coils to quickly deliver hot water to the faucet.
When a tankless water heater is not descaled regularly, hard water causes mineral buildup (scale) and corrosion. This can lead to overheating and cracking of the heat exchanger.
A small pinhole or crack in the heat exchanger
can cause water to drip onto the gas manifold, control board, fan and other
electronics.
Note: Water damaged parts included in the 12 years warranty from Noritz included (see YouTube video below):
Leaking
Heat Exchanger Replacement of a Noritz NR98OD Tankless Water Heater by Dennis The Plumber - https://www.youtube.com/watch?v=PlpaO2k4Vec
Heat Exchanger Parts List - https://support.noritz.com/tankless-water-heaters-residential-nrc-series-nrc98-dv-ng
Noritz Service Repair Manual (Free Download) - https://support.noritz.app/technical-literature?selected_model=NRC98-DV-NG
What’s
the Real Cause of this Failure? The real cause is lack
of maintenance or neglecting to descale the tankless water heater on a yearly
basis.
Would you believe I operated this unit for 8 years - totally unaware of any maintenance requirements? Likewise, how many other homeowners neglect critical maintenance requirements for their units? It's way too many!
The purpose of this blog is to help you save money by learning how to maintain your own unit.
Scheduled Maintenance Requirements - Noritz NRC98DV:
Periodic maintenance can prevent water damage failures and ensure many years of trouble-free operation. Noritz recommends:
1. Annual Inspection: Check the cold water inlet filter for debris; inspect the front cover, fan, and venting for dust and debris.
2. Heat Exchanger Flush: Flush the heat exchanger to remove scale buildup - especially if you have hard water.
3. Professional Servicing: Hire a professional to maintain and inspect unit yearly
Noritz provides a walk-through video for homeowners demonstrating the process of pulling codes from the handheld display…
Checking the Error Code History : Noritz Tech Tip by noritzamerica - https://www.youtube.com/watch?v=zqqJT907sRI
Huge List of Noritz Error Codes - https://help.noritz.com/index.php/article-tags/errorcodes/
Here’s
the step-by-step procedure for retrieving error codes on a Noritz NRC98DV using
the residential remote:
1. Turn Off the Remote: Press the Power button to turn the remote off.
2. Enter Diagnostic Mode: Hold down both the Up and Down arrow buttons simultaneously until 03 is displayed.
3. Access Error Code History: Press the Down button once to enter the error code history.
4. View Stored Error Codes: Press the Up button to scroll through the error codes, one by one.
5. Identify the End of Error Codes: Continue scrolling through the error code history until you see 000. This indicates the end of the recorded error codes.
6. Exit Diagnostic Mode: Hold down both the Up and Down arrow buttons simultaneously to exit.
7. Turn the Remote Back On: Press the Power button to turn the remote back on.
A listing of procedures can be found inside the unit, behind the cover panel once it is removed under “Displaying Maintenance Monitors.”
What are the terms of Noritz NRC98-DV-NG tankless water heater warranty?
Heat Exchanger:
·
Without Recirculation: 12 years
·
With Recirculation: 12 years
Parts: 5 years
Labor: 1 year
The
warranty terms are detailed on Noritz's support page for NRC98-DV-NG… https://noritz.com/warranty
Noritz's EZ Series models
come with a 25-year warranty on the heat exchanger when installed in
single-family homes.
Several technicians estimated 5-6 hours of labor at an approx. cost of $3,000. This rate is significantly higher than standard rates for appliance repair (ranging $500 to $600 per hour as compared to $100 to $200 per hour).
Tankless water heaters
are safe, energy efficiency, provides an endless amount of hot water, and have a long lifespan, however they require strict maintenance to ensure their longevity.
Possible replacement parts cost for water damaged units:
1. Gas Manifold Assembly: Controls the distribution of gas to the burners - $200 - $300
2. Control Board: Manages the operation of heater, including temperature control and safety functions - $150 - $250
3. Water Flow Sensor with Thermistor: Detects and monitors water flow to control heating and water temperature $100 - $150
4. Transformer: Provides power to control board and electrical devices $80 - $120
5. Wiring Harness: Connects electrical components inside the unit - $30 - $50
6. Water Filter Cover with Inlet Filter: Filter debris from entering the unit - $20
Not Affiliated with Any Political Group or Agency - For Informational Use Only!
Complaint:
After 3 months of driving
between oil change, the oil pressure light on the dashboard came ON
while driving. The oil level was checked and no oil was found on the
dipstick. What Happened to My Oil?
We
added 3 quarts of oil to the engine and brought the level on the dipstick to
FULL. This car is a daily driver moving between school, work and
after-school practices and performances. We have no time for engine problems
and breakdowns.
Honda CRV owners 2015 – 2019 are complaining all across the U.S. and asking the same question after 100,000 miles or so of driving - What Happened to My Oil?
Comments: Complaint also applicable to 2013 - 2017 Honda Accord and 2016 - 2019 Honda Civic vehicles.
Cause:
Simple answer. It's either leaking or being burned inside the engine. In most cases, these problems are caused by a clogged PCV valve due to lack of maintenance. Regardless of the cause, OIL IS MISSING from the engine can quickly lead to catastrophic engine damage.
What is a PCV Valve?
The Positive Crankcase Ventilation (PCV) valve is
an emissions device that controls unburned gases that escapes pass the
piston rings. The PCV valve circulates the unburned gases inside the engine and routes it to the combustion chamber where it is burned
during engine operation. This keeps the engine oil clean and prevents harmful
fumes from building-up inside the crankcase to keep the oil clean and free from
sludge and moisture. The PCV valve ensures a long-lasting engine and keeps the
environment clean.
See Picture of OEM Factory PCV Valve Assembly...
https://www.amazon.com/Quality-Valve-Assembly-Honda-17130-5A2-A01/dp/B09PV9C19N
Correction:
Wait a minute! Are you telling me that an inexpensive $10 part at Amazon.com ($32.99 at Honda) that is supposes to keep my engine oil clean and running smoothly is destroying my engine? Well yes, but hold on a second! It's not the part, it's lack of maintenance!
Why is this happening?
In the Honda Owner's Manual, the recommendation is to "service the PCV valve" by checking its operation every 30K, 60K, 90K, 120K, 150K... miles (watch the 2-minute Youtube video above on how this is done). This problem is happening because many car owners, automotive technicians, and service advisors neglect to check or fail to emphasize the importance of this critical maintenance procedure.
If this PCV valve becomes clogged with carbon and gum from the unburned fumes, it tends to stick in the OPEN or CLOSED position. If it sticks CLOSED, pressure builds inside the engine and causes oil leaks around gaskets and seals. If it sticks OPEN, vacuum pressure sucks engine oil from the engine crankcase and burns it inside the engine. Either way, the OIL IS MISSING from the engine!
The good news:
Honda engines are tough and reliable and can sustain some neglect, but affects tend to linger and require more frequent checks of the engine oil level (weekly or monthly) between oil changes.
Conclusion:
Hopefully, the engine
returns to normal operating condition and Honda owners are encouraged to follow all maintenance schedules outlined in their Owner's Manual...
HAPPY DRIVING AND STAY SAFE!
Further Study - Learn How to Test the PCV Valve on Any Vehicle with a Piece of Paper. Check-out the YouTube video by "The Old Mecanico Show" - https://www.youtube.com/watch?v=l3ppNvofPHI