Question about Rinnai Water Heaters

Open Question

Hi, our Rinnai water heater model # REW-2008W-A is not working, I'm wondering if you have any advice on how to get it started?

Posted by on

Ad

4 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 104 Answers

SOURCE: Rinnai Model V2532FFU Hot water Heater

push reset and check pilot

Posted on Nov 02, 2008

Ad
  • 4 Answers

SOURCE: need instruction how to flush Rinnai tanklees hot water heater

Found this link on how to do it:

Hope it helps.

Posted on May 07, 2010

  • 120 Answers

SOURCE: Ignition problem: I have a gas

This is an error code 12, not 12 degrees. You have a short on your low voltage side by the sounds of it.. First disconnect the controllers inside the heater. Turn of the power first, 2 screws top and bottom to take the frnot panel off. Follow the low voltage wires (not the power point ones) to the PCB on the ride side and disconnect them both. Panel back on, power on and try the heater again. If this fixes it you have a short circuit in the controller or the wires leading to it. If not the most likely short circuit is on the thermal fuse which loops around the heat exchanger. This will need an expert, Perth has plenty north and south of the river. Give Rinnai a ring first, they have some good staff in Perth who might help.

Posted on Dec 14, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I am trying to increase the temperature on the controller and it wont change. I have installed a new one and it still will not increase


[PDF]Operation / Installation Manual - Rinnai

https://www.rinnai.us/.../V_Series_Indoor_25xx_U...

Rinnai America Corp.temperature (shown on the digital remote control) the gas burner will ... Without the connection of a remote controller(s), the Rinnai Water Heater is preset to.

PDF]Tankless Water Heater Service Manual - Rinnai

https://www.rinnai.us/.../100000098_Rev_B.pdf

Rinnai America Corp.Indicates condensing water heater models. ... Rinnai Water Heater Service Manual. 2 ..... Digital manometer or U tube type manometer with 14 inch water column (W.C.) scale, a hose and two .... will flash on the display of the remote controller.

Nov 23, 2015 | Rinnai Digital Remote Water Heater Control...

1 Answer

I have a Rinnai Tankless Water Heater with a recurring failure to start problem (Code 11)


The first thing that you should do is get a water sample and have it tested for TUBIDITY. Then see what the contaminates are. This will tell you what the problem is. I seriously doubt what Rinnai is telling you is the truth. Then you need to look into a whole house water filter that has an NSF recommendation. That will stop all the issues that you are having.

Dec 02, 2013 | Rinnai Water Heaters

1 Answer

I have a Rinnai Model 2532 with an MC-45-4US and BC-45-4US control units. I finished another bathroom and want to add a controller, but have been told that a compatible BSC-45-4US is no longer made. Is...


Sorry Ken I worked for Rinnai Australia as a service manager so treat my advice with a little cuation but you should find the basic universal controller should work fine. The code over here is a MC-91 Q2A. It will MC-91 sometihing for over there (I'm guessing from the codes you use you are across the pacific!). You can wire this unit either back to the heater or to wiring from another controller, just match the colours and link them in. Power off the heater first but it is all low voltage.

May 26, 2011 | Rinnai Digital Remote Water Heater Control...

1 Answer

Ignition problem: I have a gas hot water system: RINNAI CORPORATION; MODEL:REU-2008W-A the panel display temperature as 40C, when open the tap, the temperature display dropped to 12C, and no...


This is an error code 12, not 12 degrees. You have a short on your low voltage side by the sounds of it.. First disconnect the controllers inside the heater. Turn of the power first, 2 screws top and bottom to take the frnot panel off. Follow the low voltage wires (not the power point ones) to the PCB on the ride side and disconnect them both. Panel back on, power on and try the heater again. If this fixes it you have a short circuit in the controller or the wires leading to it. If not the most likely short circuit is on the thermal fuse which loops around the heat exchanger. This will need an expert, Perth has plenty north and south of the river. Give Rinnai a ring first, they have some good staff in Perth who might help.

Dec 02, 2010 | Rinnai Water Heaters

1 Answer

I have a Rinnai Continuum Model 2532 natural gas tankless water heater in my home. It takes about 45 - 60 seconds for the water to get hot at the faucet which is closes to the heater. This thing is...


clean filter on the cold side coming in and clean or replace the aerator at the sink, rinnai works on water flow, common problem if your water hardness to high or if you have iron in your water

Oct 04, 2010 | Rinnai Webstone The isolator EXP tankless...

1 Answer

My Rinnai is only 3 years old and just recently it has been running out of hot water for 10 to 15 minutes long intervals. We have well water and I am wondering if that has something to do with it. Kind of...


The Rinnai relys on good water flow to fire it up. In saying that it runs out of water; thats actually not possible. The Rinnai just heats up water as it goes. Usually faults for installs on bore or well water is a problem with water flow. Causes are blocked filters or your water pump from the bore starting to fail. I would expect you to have a large filter somewhere on the water line from the well. Try and find it and clean it out. The Rinnai also has a filter. Its like a plastic round shaped nut just under the heater on the middle connection. Turn the water off first, it should almost unscrew by hand, take it out and clean it (make sure you don't drop the O ring on it). Also some tapware have water filters right in the end of the spout, check these too. After you tried all this focus on the pump. Make sure no ther water is flowing, try the hot tap and see if it works. Do the same but slowly turn on a cold tap, slowly increasing the flow. Have someone out by the heater and see if the heater shuts down at any point. If it does it could be the water pump at fault. From what you have told me and I am certain water flow is the culprit here. Really focus on anything that might lessen the flow before you start messing with the heater. Best of luck.

Aug 30, 2010 | Water Heaters

1 Answer

My Rinnai 26 sometimes takes 10 minutes to start


This is not an uncommon problem. You may notice this problem particularly if you haven't used hot water for a period of time. The hot water heater is probably working, but there is quite a bit of water that has to clear out of the lines before the hot from the heater reaches your appliance. I suspect that the water heater is doing its job, and that is the assumption I am going off of for my next statement. A recirculation system will work well to eliminate your problem. Again, assuming that the hot water heater is in proper working order. I would do my research on recirculation systems before buying one. Often times you get get a relatively inexpensive unit that will do the job for you.

Nov 18, 2009 | Rinnai Water Heaters

2 Answers

Runs out of hot water


I wonder if you have this problem below caused by a drop in water pressure from someone flushing a toilet or a washing machine. I would call the company to remedy this issue.

17. What is a cold water sandwich effect? The term “cold water sandwich effect” is a term that is used to describe the introduction of cold water into the hot water supply line during frequent on/off operation of an instantaneous water heater. The cold water sandwich effect, when present, appears as a momentary drop in hot water temperature as it is discharged from a hot water supply outlet (i.e. shower, tub, or faucet). This phenomenon is present in the operation of all instantaneous, tankless style, water heaters, but is minimized with the high tech design of Rinnai water heaters.
The technology built into the Rinnai water heaters is designed to minimize the cold water sandwich effect. Rinnai water heaters are microprocessor controlled and when water flow through them ceases, they remain in a “ready to fire state” for approximately 1 minute. If water flow through a Rinnai water heater begins within the first minute following water flow stoppage, the water heater will fire back up within 1 to 2 seconds. This minimizes the cold water sandwich effect that would otherwise be experienced with a low tech tankless water heater. It should be noted that the cold water sandwich effect cannot be removed completely from tankless style water heaters. The safety standards developed to insure the safe operation of water heaters require a delay in the ignition sequence of all gas water heaters.
While the cold water sandwich effect cannot be completely eliminated from standard plumbing systems, it can be eliminated from plumbing systems that have a supply and return hot water circulating system. Rinnai has developed 2 methods to eliminate the cold water sandwich effect in residential hot water circulating systems.
The first (and preferred) method to remove the cold water sandwich from circulating systems utilizes a small electric tank water heater (powered up) that is used with a dual purpose. The small water heater acts as a mixing tank to eliminate the cold water sandwich effect from the Rinnai water heater and it uses its electric heating element to offset the heat losses from the hot water circulating system.
The second method to remove the cold water sandwich from circulating systems utilizes a small 2 to 6 gallon storage tank installed on the hot water outlet of the Rinnai water heater. This tank acts as a mixing tank to blend the cold water sandwich with hot water and eliminating its effect at fixtures.

Mar 11, 2009 | Rinnai Water Heaters

Not finding what you are looking for?
Water Heaters Logo

Related Topics:

263 people viewed this question

Ask a Question

Usually answered in minutes!

Top Rinnai Water Heaters Experts

Donni Steen

Level 3 Expert

659 Answers

gizmonix

Level 1 Expert

13 Answers

jdthefixer

Level 3 Expert

744 Answers

Are you a Rinnai Water Heater Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...