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Rinnai v1200 Hot water is almost cold. Smell of gas when open the hot water tap.

Posted by Anonymous on

6 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

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Posted on Jan 02, 2017

CRTN
  • 716 Answers

SOURCE: No water flow from hot water tap with a rinnai tankless water hea

Its A Possibility The Left Over Water In The Hot Is Frozen. If Your Line Is Exposed Outside Somewhere It Can Easily Freeze Up. Turn On The Hot Water Everywhere In The House And If Accessible Check The Lines To See Where The Warmth Ends. You Can Leave One Off Over Night In Hopes That It Will Eventually Defrost.

Posted on Jan 16, 2009

  • 234 Answers

SOURCE: I have a Rinnai system. Good cold water pressure, little hot.

What type of pipes are install on this heater?

Posted on Mar 13, 2009

  • 45 Answers

SOURCE: My Rinnai tankless water heater cycles up and down

You need to first make sure is the tankless who do the “up and down”! . If the problem manifest on more then one faucet then the problem is the unit. Have a thermometer (we use a infrared gun wich we train on Hot water pipe !) and see if actually the unit is the culprit.
If the problem is only on one shower It is possible also to be a “antyscalding valve” If the trigger valve on your shower is being adjusted too low then it trigger a splash of cold water now and then on regulate intervals. Try to adjust the temperature lower at the unit (say 110F ) and see if the problem change. If it does, then the problem is for sure in the faucet. If it does not change , then you have a problem with the water flow sensor . It is simply getting stuck. Bad bearing or even a piece of Teflon tape. I believe you will need a certified technician for that so no issues with your warranty will appear.

Posted on Jan 13, 2010

  • 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: same problem with rinnai V1200.starts

These units need water flow/pressure to work. If you use a mixer to get the right temperature as soon as you try to increase cold to make the water colder you unfortunately reduce the hot flow. Fairly complicated fault to explain, all continuous flow units have the same flaw. Solution is to try and increase flow and the best way is to take any water filters or restrictors out of your tapware. Most taps have the located in the end of the spout. Unscrew the end and remove any restrictors. Shower roses are a bit more tricky to find. This fixes 99% of these problems.

Posted on Dec 23, 2010

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1 Answer

How to manually reignite rinnai infinity 26


what i would recommend is to turn power off to unit, turn water off, now open a hot tap inside. Go back to hw unit , turn power back on, now turn HW cold water tap to open. Now you should hear the unit start up.& click continuosly, this is the unit trying to lite. The unit has a flow sensor so as water passes threw it ,that tells unit when to lite. If you hear nothing & no water comming threw you strainer located above cold shut off tap is blocked, unscrew black knob & check. If you have flow & no HW check your gas, usally by losening gas union, there is also filter above this. Also plug another power tool into power point to check you have power

Feb 01, 2014 | Rinnai Digital Remote Water Heater Control...

1 Answer

Rinnai v1200 no water at all from hot taps. any ideas or common faults?


Check for lyme buildup in the pipes also check for a stuck water shutoff valve.

Good luck,

Marty

Jul 14, 2013 | Rinnai Water Heaters

1 Answer

Same problem with rinnai V1200.starts ok and as soon as you want to ajust cold water,the hot water line gets cold.**** all design


These units need water flow/pressure to work. If you use a mixer to get the right temperature as soon as you try to increase cold to make the water colder you unfortunately reduce the hot flow. Fairly complicated fault to explain, all continuous flow units have the same flaw. Solution is to try and increase flow and the best way is to take any water filters or restrictors out of your tapware. Most taps have the located in the end of the spout. Unscrew the end and remove any restrictors. Shower roses are a bit more tricky to find. This fixes 99% of these problems.

Dec 22, 2010 | Rinnai Water Heaters

1 Answer

Rinnai gas water temperature keep alternating from hot to cold


A fault often found with these units is due to insufficient water flow. Usually this causes specifically the shower to run hot and cold. Try turning on more than one hot supply; if this fixxes the fault you will need to try and increase water flow. Most new tapware/showerware have water flow restictors built in. These are the cause of many problems with continous flow heaters such as the Rinnai. In taps they are usually located in the spout if it unscrews. In showers try the shower hose. Find them and take them out. Also make sure your mains supply to the house is on full.
There are more technical faults but this is something you can easily try first.

Aug 23, 2010 | Bosch & Tankless LP Hot Water Heater

1 Answer

Want to change water faucets


Centre tap of the rinnai will turn off hot water supply only.
Easiest way is to turn off your mains water supply. This will isolate both hot and cold, no need to turn off anything else

Jul 11, 2010 | Rinnai Digital Remote Water Heater Control...

1 Answer

Rinnai Infinity 26 hot water system set to 55 degrees with remote temp adjuster. Water only luke warm for showers. Burnner working, water & gas pressure ok. Any thoughts ... Stephen


If you aren't getting any error codes, then the heater is probably doing its job. Your problem is probably somewhere in your plumbing system. The most common reason you get this sort of problem is due to cold water mixing in the hot water system. There are a number of causes for a "cross connection" :

-Faulty check valve
-Missing check valve on reciculation return line
-Faulty shower cartridge
-Thermostatic mixing valve set too low
-Faulty thermostatic mixing valve
-Faulty anti-scald valve

The easiest way to confirm a cross connection is to: 1) shutoff the cold water entering the tankless heater 2) open hot water valves around the house. If you still have water flowing at your hot water fixtures, then you have a cross connection.

Jul 09, 2010 | Rinnai Digital Remote Water Heater Control...

2 Answers

I have a Rinnai tankless gas water heater and this things beeping and flashing 12 everytime we turn on the hot water the water will get hot but you have to wait for it to stop beeping


Error 12 is failed ignition - this can be caused by many things, but normally a low gas pressure, or no gas pressure upon ignition.
Try turning the hot tap on very slowly till till the control shows burner is lit. Then turn it on faster. If it stays going with no error, you might have a faulty regulator, not opening fast enough to meet demand. Especially common with lpg models,a lot rarer on natural gas.

Oct 27, 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

3 Answers

No water flow from hot water tap with a rinnai tankless water hea


Its A Possibility The Left Over Water In The Hot Is Frozen. If Your Line Is Exposed Outside Somewhere It Can Easily Freeze Up. Turn On The Hot Water Everywhere In The House And If Accessible Check The Lines To See Where The Warmth Ends. You Can Leave One Off Over Night In Hopes That It Will Eventually Defrost.

Jan 16, 2009 | Rinnai Webstone The isolator EXP tankless...

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