Question about Rinnai RHFE-1004FA 38,400 BTU Energy Saver Ductless Heater - LP Gas

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Rinnai RHFE-1001FA I have an old Rinnai heater probably installed in 1992 when the house was built. Bought the house in 2001 and haven't had any problems until recently. When I turn the heater down to a low setting, it shuts down completely. Lights go off. This model doesn't have the digital temp setting option - just an on and off buttom with a sliding lever to set the thermostat. It does perfectly fine at higher levels. If it shuts down, I then move the lever to a higher setting and it kicks on, stays on and heats to desired temps. I had someone come in to look at it and he couldn't identify a problem.

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Have a technician check the temperature slection slide for either corrosion or pitting

Posted on Aug 30, 2007

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Have a technician check the continuity on the temperature selection slide. It may have a pit on it not allowing a good electrical connection or coated with corrosion.

Posted on Aug 30, 2007

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I can suggest a around-about solution. I also have the same model installed around the same time. I have the outlet that it is connected to controlled by an electric heat thermostat on a wall at the oposite side of the room. I keep the heater on high at all times and the thermostat controls the electricity to the outlet. It's worked great for the 13 years it's been installed.

Posted on Mar 12, 2007

  • citizenkahn
    citizenkahn Dec 29, 2012

    Bill, how has the power cycling of the unit worked over time? I'm concerned about cutting power to the unit instead of letting the unit manage itself.

  • citizenkahn
    citizenkahn Dec 29, 2012

    Bill, have you had any issues with the thermostat controlled outlet cutting power to the unit? I'm concerned about pulling management of the gas etc from the unit

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Posted on Jan 02, 2017

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SOURCE: Rinnai RHFE 1001FA

i have a rinnai rhfe 1001fa heater and when its real cold sometimes it will shut down all the lights go out and i have to shut it off then turn it back on and sometimes it still wont start and i will leave it of for a day or two then try it and it will work it seems to act up more when its colder i am running it this fall so far no problems this unit is around a 1994 or so and has not given any trouble till this started last winter

Posted on Sep 19, 2007

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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.

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Our rinnai R94LS will shut off after running several minuets and shows error code#10. I'll turn it off for several minutes and turn back on, run system for several minuets and it will shut off again and...


Tankless computer is not working.
Error 10 is blocked flue or inadequate air supply. Or failed PC motherboard, or failed sensor etc.
Get more fresh air to unit. Check if bird built nest on flue pipe. If flue exits side of house, look for obstructions nearby that can slow the exit of poisonous vent byproduct into the air you breathe. For example trash cans and boxes or parked car etc.
http://waterheatertimer.org/pdf/Rinnai-installation-and-error-codes.pdf

Call service technician who is qualified to work on tankless computer. This will be a well-seasoned veteran of computer technology and plumbing expertise ... a plumber who knows how to fix computers lol.
This person will catch unit up on required yearly maintenance, and check specialized operation conditions needed for tankless computers to function properly.
If tankless computer is older than 5 years, then compare it to your 5-year old laptop, and assume same level of glitches and problems.

Solve any tankless problem yourself, today, for $385 by installing tank type heater from local box store:
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Gene
h

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Aug 29, 2013 | Rinnai Water Heaters

1 Answer

Controller not working


The rinnai is a computer that heats water. It is not ordinary water heater most people are familiar with, and repairs are not do-it-yourself, requiring a trained technician qualified in that brand who can diagnose both computer and water heater problems and plumbing problems.
Call rinnai for recommended local technician. Click on support tab. Note their webpage is very short on repair details, unlike companies that sell tank-type heaters... because tankless units are not do-it-yourself.
http://www.rinnai.us/tankless-water-heater
Problem might be simple blown glass fuse on circuit board or complete failure of computer and sensors.
Here is page written for Rheem tankless, that explains general complexity of tankless computers, and showing required maintenance, such as deliming each year:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
To save problems with tankless computers plus anticipated expense of maintenance and repairs, I recommend homeowner install tank-type gas water heater:
http://waterheatertimer.org/How-to-install-gas-water-heater.html
Also install one-time-use whole house surge protector, and install grounding rods to prevent further damage... lightning frequently likes the same places over and again:
http://waterheatertimer.org/How-to-wire-Whole-house-surge-protector.html
Gene
h

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Aug 12, 2013 | Rinnai Water Heaters

1 Answer

Rinnai heaters


Some products need to cure and release a residual smell which is intensified by any open flame, like a pilot. Normally a petroleum product will do this but Scotchguard could as well. It should fade with time.

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1 Answer

My kids just bought an older home w/a rinnai continuum nc-45-4us. right now their house phone isn't installed, so they can't phone, but they can't turn on hot water. any suggestions


Run through the basic checks
  • Power lead from the heater plugged in a socket turned on.
  • Gas on to house
  • All valves below heater in on position.
  • If they have controllers in the house turn on (key pads marked with Rinnai logo in kitchen or bathrooms usually)
There is a turbine that spins in the heater when a hot tap is run. If the heater has been sat for some time not operating the turbine might have stuck. Run the hot tap and keep it running, using a hammer give the centre pipe connection under the heater a firm hit a few times(not too hard). This might unstick the turbine.

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I would call him back out. It sounds like a gas line is loose or the vent is not on properly

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There is no way to restrict the setting and keep it UL approved. If you cannot get the heater above a certain setting you have either too small of a heater, too much outside air entering the apartment or the gas pressures are not great enough.

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your in the wrong section this is airconditions

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