Question about Rheem RTG-53PVN Indoor Natural Gas Tankless Water Heater for 1-2 Bathroom H

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Error code 76 C4 heater shuts off every 5 mins while in shower

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Remove power source from the unit. If remote controlerror code 76 C4 heater shuts off every 5 mins - 2.gif is installed; remove cover and lift the control wires on the terminal...can be accomplished from either end.

Restore power and see if unit functions normally.

Contact Paloma/Rheem customer (800-432-8373) support and notify them IF you are getting a code "76" error. Rheem has recently extended the warranty on the "Burner Control Assm."; which is your problem. The C4-C8 portion of the error code, is where the unit stops the ignition process...burner fails to light, or gives you intermittent hot water. In either case, contact customer support2.gif.

If this helps, please indicate so.
Mike//
jzklipper@aol.com

Posted on Nov 11, 2009

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My RTG-74PVN tankless is 3 1/2 years old. It started giving me the "76" error code 1 day ago. I disconnected the Remote from the main unit and it's working. I then called Rheems tech support, they verified the problem was the circuit board in the main unit. They are sending a new circuit board to a local contractor for installation at no charge to me. I wasn't even put on hold. I am very pleased with the service. (not with the bad circuit board)

Posted on Sep 25, 2010

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Unplug your controller and see if it happens. if it doesn't then you know its a bad connection between the tankless and the controller if not the PCV board could be having problems

Posted on Oct 03, 2009

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What does a C4/76 error code mean


I just went through lots of troubleshooting the same problem. Most searches will tell you its a communication error with the remote. After I was able to rule out the wiring, I bought a new remote ($70), hooked it up and immediately got the same error. Called Rheem Tech Support at 866-720-2076. They said code 76 meant I needed a new control board and chip. My unit was out of warranty but they sent the needed parts and detailed install instructions the same day, via FedEx overnight! It was a very simple task to replace. I happen to own 4 different units and am very glad I chose Rheem brand. Its not often I encounter a company willing to stand behind their products, even after the warranty period. Oh, and if you disconnect the remote control wires from the main unit (unplug unit, then remove face panel and they will be labeled, hooked on 2 small phillips head screws, replace panel and plug back in) your unit should still (more often than not) kick on and heat to about 100F by default...a do-able shower temp :) hope this helps!

Sep 28, 2014 | Rheem Paloma PTG-74PVP / RTG-74PVP Liquid...

1 Answer

C4 76 error code on richland waterheater


Richland tankless is made by Rheem.
C7-76 is communication fault with remote.
Turn off power at remote and wait 5 minutes, turn power back on at remote, and see if problem clears.
If problem continues, read below:

Before calling service technician, open following links for troubleshoot resources including error codes, Rheem chat, typical maintenance manual:
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Tankless water heater, more than any other type of heater, need to be maintained.
Maintaining tankless will probably not affect C7 76 fault code, but can prevent many other common error codes.
http://waterheatertimer.org/pdf/Tankless-maintenance.pdf

Sep 14, 2011 | Rheem Tankless Hot Water Heater...

2 Answers

Have a Rheem PTG-74PVP tankless water heater. Shuts off after a few minutes while taking a shower. Get a code 76 C8


Before calling service technician, open following links for troubleshoot resources including error codes and rheem chat, and typical scheduled maintenance:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/Tankless-maintenance.pdf

Error 76 can mean communication failure between tankless and remote control, which can include bad remote control, bad wire, bad wiring connector, or PC board failure.
Disconnect remote control and see if tankless will work.
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf

Error C8 76 can mean PC board failure.
Contact Rheem and/or service technician.

Take a moment and rate answer:
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Sep 07, 2011 | Rheem Tankless Hot Water Heater...

1 Answer

Error code C4 76. Water heater shuts off (only with shower use). Will reset and work 4-5 min. then off agin. works fine from sinks. Unit is app 3 years old and did work fine.


Before calling service technician, open following link for Rheem tankless resources, including error codes and general help for homeowner.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

C7 76 is communication fault with remote control.
Remote is connected to tankless with a wire.
Usually you remove wires from terminals on tankless, and see if tankless functionality returns.
If tankless works fine, then it will heat to default 120 degrees.
Clean terminals and put them back.
If problem returns, then problem is then narrowed to bad wire, bad remote control, or problem inside tankless.
Since new remote control costs about $99, it might be cheaper to have service technician review the problem and catch up with maintenance.
Error codes are considered starting points for troubleshoot since error can have different soultion than same error on another unit.

Read manual for advisories, error codes, and required maintenance.
For example tankless might require monthly water filter cleaning, and yearly de-liming, and yearly burner cleaning.
Your service technician can advise what is typical for your region, since altitude, incoming water temperature, quality of water, water pressure, venting, are factors for maintaining water heater.

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

May 25, 2011 | Rheem EcoSense by 7.4 GPM Tankless Water...

1 Answer

When taking a shower the hot water turns off. When I go to the tankless water heater it says C4 76. What does this mean?


Before calling service technician, open following link for Rheem troubleshoot resources including error codes and typical manuals.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
C7 76 is problem with remote control. Following link might help.
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf

Read manual cover-to-cover to make sure your tankless water heater receives yearly maintenance required for unit to continue working.
Tankless are maintenance heavy which can quickly eliminate any promised energy savings unless you de-lime and troubleshoot and read tips-and-tricks others have written and glean information from service technician who visits your house. Mostly glean how much tankless repairs and parts cost vrs buying whole new tank-type gas water heater at local box store, since all costs are energy.

Feb 18, 2011 | Rheem RTG-74PVN-2 Natural Gas Pronto Whole...

2 Answers

Rheem Tankless wh model rtg-74pvn shuts off error code c4 76


Contact Rheem; the Burner control unit has lost comm with the remote...the part is warranteed for up to five years.

Nov 01, 2009 | Rheem RTG-74PVN-2 Natural Gas Pronto Whole...

11 Answers

Paloma tankless, gas, water heater, error code C7 76


If you look on the left hand side of the burner control module you'll see 4 capacitors - the capacitors have most likely failed...pretty sure anything code 76 is P/S failure. It may also be covered for manufactures defects. If the cap is blown..the top will be slightly raised as apposed to flat like the other nearby caps - they are called top blow capacitors...the damage should be evident.

Jul 24, 2009 | Rheem Paloma PTG-74PVN / RTG-74PVN...

1 Answer

C4 76


76 is a bad connection between the controller and the unit. try unplugging the controller and running it, also check the wiring between the two units. if that is not it. it means that one of the control boards it shot

Jul 18, 2009 | Water Heaters

3 Answers

Rheem Pronto RTG-74 error code C4


Error code 13 is "oxygen depletion sensor" activated.
The first number is a sequence indicator.
If you need the training manual I have it and can send it to you.
I got Rheem to send it to me a while back and it is a big help when working with these units.
It covers th RTG-42, 53, 66 and 74.

Apr 29, 2009 | Rheem Tankless Hot Water Heater...

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