Question about Rinnai Digital Remote Water Heater Control Mcc-45-4us

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Rinnai *85e remote hooked up no hot water and no reading on remot

Without remote heater woorks fine. Hook up the two leads to remote MC-45-4US main controller no hot water . remote cycles thru a test
1
- -
2
- -
3
- -
and so on up to 7 then starts over. remove remote turn water on cold must turn it of turn back on and runs hot just fine
any help??????

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Did you turn the unit off before hooking it up ? Any function on a tankless rennai the pwer has to be turned off and the priority button has to be pushed in,, if you have the manuel it tells you haw to do this,,

Posted on Jun 06, 2009

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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 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

I have a Rinnai MC-45 US. One morning, we had no hot water & the temp on the control panel read 12. So I pushed the Priority button. We now have hot water, but the priority button is still lit. It has...


Error code 12 can sometimes be caused by a short circuit on the low voltage side of the installation. Could possibly be a fault with the controller itself which is low voltage.

Jan 31, 2011 | Rinnai Digital Remote Water Heater Control...

1 Answer

How do I turn it on? I press the "on" button and


The manual says:
http://www.coinwash.com/temp/rinnai.pdf

"For the name of the Authorized Distributor or Installer nearest you, please contact your local HVAC dealer or gas service technician, visit the Rinnai website (www.rinnai.us), call Rinnai at1-800-621-9419 or write to Rinnai, 103 International Drive, Peachtree City, Georgia 30269"

Manual says that the remote is for setting temperature.
When you turn on hot water spigot, tankless water heater will heat the water to the set point temperature.
If water heater is not set up to use remote, then tankless unit will heat to 140 degrees F.
"With the MCC-45-4US remote control installed the water temperature is adjustable from 96
to 180°F. The water temperature cannot be set to a temperature other than 140°F
without the use of the MCC-45-4US remote control unit. If you require a temperature
other than 140°F you must install the MCC-45-4US remote control unit."

"Error messages are displayed on the remote control units, simplifying service calls."

Page 9 of manual shows hot to set temperature using remote.
Water taps must be shut off to set temperature.
Circulating pump must be turned off.
"Simply press the H or C button until desired temperature is displayed"
"green in-use indicator will display"

If your unit is not working, the manual says to contact local plumber.
Fixya has specialists who will talk to you by phone about your problem for a fee.

Dec 18, 2010 | Rinnai Digital Remote Water Heater Control...

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.

Sep 21, 2010 | Rinnai Digital Remote Water Heater Control...

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

Hi, our plumber has hooked up a new infinity xr-26 but the existing remotes don't work. He says it's a simple 2 wire connection but ther's no cirrcuit


Check with Rinnai to see if the old remotes are compatible with the new heater. Might mean upgrading the remotes too but the wires should be OK. Double check that he has actually connected the wires to the heater. Rinnai in Australia recentyl changed the connection point for the wiring. I can help further with this if this is the issue (not sure where you are!)

Mar 07, 2010 | Rinnai Digital Remote Water Heater Control...

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