20 Most Recent Rheem RTG-74PVN-2 Natural Gas Pronto Whole House, Natural Gas, Tankless Wat Questions & Answers


Rheem pronto tankless water heater

Before calling service technician, open following link for Rheem troubleshooting resources.

Sometimes people attach tankless to tank-type heater to preheat incoming cold water.
Additional tanks are also used to store solar heat, and some installations have tank-type because tankless is unreliable. Service technician can sort out the function correctly.

Owner should read tankless manual thoroughly, especially troubleshoot and maintenance sections. Tankless require yearly maintenance.

Since tankless are expensive to repair and replace, you might be able to fire up the tank-type water heater and provide hot water without much cost.
You can also install tank-type gas water heater yourself. Lowes sells 40 gallon for $317.00, and then you offer 10% less.
2/11/2022 6:44:06 AM • Rheem... • Answered on Feb 11, 2022

Error code 13 (air flow) tankless H20 Rheem

Have 2 of these Rheem units in my house. Both had this same error code within 30 days of each other. And my neighbor has 2 units as well - and guess what - 2 months after mine stopped working because of the code - so did theirs. It is not something that can be fixed. It is a manufacturer's defect - and it looks like Rheem has yet another class action on their hands (like the one for the RTG - 74 PVN). They need to do a recall to repace these units.
12/30/2020 12:29:10 AM • Rheem... • Answered on Dec 30, 2020

Why is a new pc board set to the same as the board that it replaces

Factory set to standard should not need to be adjusted, if you have a problem then it will mean that one of the components on the pcb is not working.
2/7/2018 4:35:07 AM • Rheem... • Answered on Feb 07, 2018

Need to know what upper and lower manifold pressure should be set to

Thats because you changed settings,reset
2/5/2018 7:05:56 PM • Rheem... • Answered on Feb 05, 2018

I cleaned my burner unit by watching the video howtolou made on you tube. It took me longermthan his 15 minutes, however after doing everything as instructed I still have the C2 11 code

There are other causes for C211 error code on Rheem tankless, such as gas pressure and venting. Following link has resources: http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html Gene If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7
1/29/2017 9:08:33 PM • Rheem... • Answered on Jan 29, 2017

Rheem pronto in new modular house won't stay on

It should still be under warantee you can call them at:
(800) 431-1549
5/2/2016 11:46:10 AM • Rheem... • Answered on May 02, 2016

Hi, I have a Rheem RTG-74PVN-2 tankless hot water

Remove power source from the unit. If remote control is installed; remove cover and lift the control wires on the terminal...can be accomplished from either end. See if the unit runs longer.
If you're receiving any error codes, especialy code 76; contact RHeem customer support at (800-432-8373) and notify them IF you are getting a code "76" error.

Good luck,
1/31/2016 4:57:56 PM • Rheem... • Answered on Jan 31, 2016

C4 13 error flashing on water heater, shuts off after a minute

1/ overheat stat 2/ fan 3/ microswitch 4/diaphrapm valve best of luck
8/15/2015 5:35:58 PM • Rheem... • Answered on Aug 15, 2015

Heater refuses to come on

Make sure that the gas valve is fully open. Check to see if you have voltage going into it, and the curcuit breaker didn't trip. If it's plugged into a GFCI outlet or circuit breaker, then make sure that it didn't trip.
1/11/2015 5:27:00 AM • Rheem... • Answered on Jan 11, 2015

Whirlpool Hot water heater pilot light keeps going out.

Your thermal couple needs to be cleaned (sand paper the portion where the pilot light heats it) or possible replaced. It sounds like it is not sending the correct signal to the gas valve.
1/4/2015 5:38:48 PM • Rheem... • Answered on Jan 04, 2015

Why do my 1998 avalon cut off when i put it into gear

Bad torque converter.
12/24/2014 6:00:02 PM • Rheem... • Answered on Dec 24, 2014

How to reset rheems tankless digital display

Press up and down buttons same time? http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html Gene Water Heater Timers Save Money If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7
12/21/2014 7:40:20 AM • Rheem... • Answered on Dec 21, 2014

What does this mean c7 13

It is the code for the thermocouple or oxygen depleation sensor call rheem and thay will send you a how to in PDFs but check the venting first
11/29/2014 11:18:59 PM • Rheem... • Answered on Nov 29, 2014

What causes a water heater to release a few ounces of black water then stop draining?

This unit operates as a boiler- and need ANNUAL service to clean the unit by flushing with a demineralizing solution ( Vinegar or CLR) If no maintenance is done it will accumulate minerals and corrosion which eventually cause unit failure. T the least the unit will operate at reduced efficiency
9/25/2014 3:55:15 AM • Rheem... • Answered on Sep 25, 2014

What does an error code c7 76 mean on my tankless water heater?

Copy following link: might be bad remote control or bad wire or bad pc board http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html#error gene h If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7
8/12/2014 11:19:59 PM • Rheem... • Answered on Aug 12, 2014
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