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Our Rinnai V1500 Hot Water System cuts out the hot water supply randomly. Could have a constant hot water supply for about 10 minutes, then the hot water cuts out. Can take a few minutes for the hot water to return. It doesn't matter if we turn the water off and on, or if we put it to full hot..... still takes a few minutes to get the hot water back. Any ideas suggestions??

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

gary1121
  • 332 Answers

SOURCE: hot water is cutting out after 2 - 3 minutes whilst showering

check the screen on the cold water intake on the cold side,, you might have to flush the system out, and do you have the shower head water restricter in, if not you may be using to much hot water,,, how many other hot water fixtures are running at the same time? try running just the shower,,,if this is a tank water heater the dip tube could be bad that is on the cold side it takes the cold water to the bottom of the tank and forces the hot water out,, if you ar only getting a couple of min of hot water and the dip tube is bad it is not going to the bottom but just at the top and not getting all the hot water you will need a plumber

Posted on Jun 06, 2009

  • 1 Answer

SOURCE: Dip switch settings for Rinnai V1200 & V1500

curios to find out if you had any help on this subjuct at all?

Posted on Aug 01, 2010

  • 120 Answers

SOURCE: How to operate Rinnai V1500

The V1500 is in essence the same as Infinity 26. Rinnai have manuals on their website.

Here's a link

http://www.rinnai.com.au/images/stories/operating_instructions/Hot_Water/All_Continuous_Flow.pdf

If you have any specific problems or queries just post them on this site. I check it every few days.

Cheers

Posted on Aug 20, 2010

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1 Answer

Rinnai RL94i - Produces hot water for 3 minutes, then stops


I just had this exact problem. It kept getting worse until we had no water. Our Rinnai tankless hot water heater started the same way though, with hot water for a few minutes and then would shut off with an error code 10. We just had to shut the hot water off and then back on, wait a minute or so and we had hot water back for a few minutes. Our unit would come on with a loud vibrating noise and remain until it shut off with an error code 10 (air flow fault). The solution was to remove the blower fan and blow out the squirrel cage. Ours had moths in it. We also vacuumed out the fan housing. Be careful to mark any wires you disconnect and take pictures before removal. Our unit is now almost silent when it comes on and supplies endless hot water.
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Jun 10, 2014 | Rinnai RL94i Tankless Water Heater

2 Answers

Lound vibration when running


Check gas control valve.

Good luck,

Marty

Feb 18, 2013 | Rinnai Water Heaters

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I have a Rinnai model R53-i-1. When hot is called for, heater turns on and produces a low to loud vibrating noise. It seems to change with water flow use at tap. I called Rinnai, got the name of local guy,...


A low to loud vibrating noise is an indication of an Air /Fuel imbalance . When you flow more water , does the noise become louder ? if so , have a service technician check for pproper incoming gas supply . The requirements are located on the left hand side of the Rinnai unit . There will be a minimum/maximum specification.
Another issue could be the burners being "dirty" and needing to be cleaned .
Also investigate the venting and make sure all joints are sealed properly and the venting is sloped correctly . If you have your installation manual , please refer to the venting section in regards to usage of a condensate collector . This can be a cause of noise .
There is a clear vinyl hose running from the bottom of the heat exchanger to the front of the gas valve . Please inspect this hose for any moisture or signs of staining . This can lead to issues with the gas valve . It must be determined where the moisture is coming from (See previous comment about Condensate collector !) .
The cold water solenoid valve usually has nothing to do with this type of noise .
As far as yourself being able to repair the unit ? I have no idea of your experience but a qualified licensed service technician should be used as this is a gas fired appliance and as such is subject to huge liabilities when being repaired .
Have them call Rinnai Tech Support while on site for any assistance needed.
You shouldn't have to "put upo " with any noise issues . The Rinnai ujnits run at 49 decibals (about the same level as a conversation .
Good Luck !

Jan 30, 2011 | Rinnai Water Heaters

2 Answers

How to operate Rinnai V1500 water heater?


The V1500 is in essence the same as Infinity 26. Rinnai have manuals on their website.

Here's a link

http://www.rinnai.com.au/images/stories/operating_instructions/Hot_Water/All_Continuous_Flow.pdf

If you have any specific problems or queries just post them on this site. I check it every few days.

Cheers

Aug 15, 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

1 Answer

Dip switch settings for Rinnai V1200 & V1500


curios to find out if you had any help on this subjuct at all?

Aug 24, 2009 | Rinnai Water Heaters

1 Answer

Takes too long for hot water.


You need a recirculating line. You will have to hire a plumber to run a water line from the farthest fixture or to the fixture you are concerned about on the hot side and return it back to the water heater. this will cause hot water to constantly run throught the hot water line (via the recirculating line) and when you want to draw water from the fixture, you will already have hot water right at the line.
I know this works with standard tank water heaters, but it is a lil trickier with rinnai units(but very possible) if your plumber pleads the 5th and tries to sell you another unit call the Rinnai manufacturerand ask them how.

Jun 12, 2009 | Rinnai Water Heaters

1 Answer

Hot water is cutting out after 2 - 3 minutes whilst showering


check the screen on the cold water intake on the cold side,, you might have to flush the system out, and do you have the shower head water restricter in, if not you may be using to much hot water,,, how many other hot water fixtures are running at the same time? try running just the shower,,,if this is a tank water heater the dip tube could be bad that is on the cold side it takes the cold water to the bottom of the tank and forces the hot water out,, if you ar only getting a couple of min of hot water and the dip tube is bad it is not going to the bottom but just at the top and not getting all the hot water you will need a plumber

Mar 21, 2009 | 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

2 Answers

My r85 rinnai water heater vibrates significantly and makes


Sounds like there is something loose in the line.Like cut off valve,check valve.

Mar 09, 2009 | Rinnai Digital Remote Water Heater Control...

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