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WCohn
WCohn, Journeyman Plumber
Category: Plumbing
Satisfied Customers: 961
Experience:  Journeyman Plumber/Estimator
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Have an RL75 installed 3 years ago tonight first tome made a

Customer Question

Have an RL75 installed 3 years ago tonight first tome made a loud noise during start up grumbled kinda then error code 10 checked venting was fine After a little bit now unit shuts down
JA: How old is the appliance? Have you gotten error messages before?
Customer: Never an error message 3 years old may be 4
JA: Do you plan on doing the work yourself?
Customer: Yes I can have a nice history with plumbing
JA: Anything else we should know to help you best?
Customer: Just not sure about the noise it makes and how does cover come off
Submitted: 5 months ago.
Category: Plumbing
Expert:  WCohn replied 5 months ago.

My name is ***** ***** I look forward to helping you!

Customer: replied 5 months ago.
RL75 never an error code now for first time during syart up make a noise then shuts down had ewrror code 10 which is venting checked no problem
Expert:  WCohn replied 5 months ago.

I'm a Rinnai factory trained and certified repair technician. Error code 10 is vauguely based off of venting. Is this an interior or exterior unit.

Customer: replied 5 months ago.
interior
Customer: replied 5 months ago.
no
Expert:  WCohn replied 5 months ago.

What part of the country do you live in?

Expert:  WCohn replied 5 months ago.

No what?

Customer: replied 5 months ago.
New Jersey
Expert:  WCohn replied 5 months ago.

How handy are you? Do you feel comfortable removing the cover and doing some diagnostics?

Customer: replied 5 months ago.
Expert:  WCohn replied 5 months ago.

Okay does it code 10 immediately?

Expert:  WCohn replied 5 months ago.

Meaning does it fire at all?

Customer: replied 5 months ago.
It make a loud noise and now just shuts down no code
Customer: replied 5 months ago.
No firing
Expert:  WCohn replied 5 months ago.

Remove the cover

Customer: replied 5 months ago.
how does cover come off
Expert:  WCohn replied 5 months ago.

Four phillips head screws

Expert:  WCohn replied 5 months ago.

The long vertical plastic grey bars on the side slide off if you pull the them to the right on the right one and to the left on the left one

Customer: replied 5 months ago.
cover is off
Expert:  WCohn replied 5 months ago.

Remove part #142 in picture below

Customer: replied 5 months ago.
how many screws needed to remove i have 8 then3 more holding electric
Expert:  WCohn replied 5 months ago.

I don't remember the number but you are only removing the top plate that runs horizontally

Expert:  WCohn replied 5 months ago.

There yet?

Customer: replied 5 months ago.
cant get screws out
Expert:  WCohn replied 5 months ago.

They shouldn't be that tight.

Customer: replied 5 months ago.
when unit starts noise then shuts down and states water temp is 61
Customer: replied 5 months ago.
Thanks but going to bed
Expert:  WCohn replied 5 months ago.

Okay let me tell you whats happening and then you can get a local tech. Its not getting enough air or it cant get rid of it. This can happen if the fins of the heat exchanger get plugged with condensate residue. It should be blown out with an air compressor and a vacuum