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B-vmh24sc-1will not respond to remote sometimes. when it does it will by itself revert to heating at 76 degrees. not coding and works well otherwise. is this control board problem ?

Posted by Doug Willey on

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4 Related Answers

Anonymous

  • 1 Answer

SOURCE: I keep getting error code c4 76

You are having a communication fault with remote control...........#1...Check remote control wiring for loose or damaged connection. #2-Bypass remote control cable by connecting remote control directly to remote control terminals on PCB. Repalce caable if found to be faulty #3- Repalce remote control and #4- replace the PCB. These are items connected to your problem....it may be anyone of these....Good Luck

Posted on May 19, 2009

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Anonymous

  • 34 Answers

SOURCE: My tankless remote digital controller won't go above 76 degrees F

76 is an error code. Look in the owners manual and it will tell you what the problem is.

Posted on Jun 11, 2010

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heatman101

D. Floyd Kolb

  • 43501 Answers

SOURCE: Rheem TRG 74PVN-1 put a new

Hi,
There have been alot of problems with the boards on those heaters and with what you are telling here it would look very much like you have another board issue...
Do you have surge protection on your main power panel?? Those boards are very sensitive to power surges...add a panel surge suppressor to you main electrical panel...
Also it is good to add a time delay relay on the power going to the heater, to keep the electric from going on and off rapidly in the event of a power problem...a time delay of about three minutes will help to solve many problems.

heatman101

Posted on Mar 31, 2011

Gene Haynes

  • 5391 Answers

SOURCE: No hot water in the mornings. When temptures go

Tankless computer is older that 5 years... then install tank type heater for $385 from local box store.
Otherwise copy following links:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html#temperature
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/Crossover.html
http://waterheatertimer.org/Tempering-tank.html

Replace PC board (computer motherboard).
Catch up on required yearly maintenance.

Gene
h

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

Posted on Oct 13, 2013

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1 Answer

Burner lost comm with the remote code c4 76


Check thermostat connections.......check thermostat leads to the unit.......To check remove thermostat wires(leads) from unit and see if unit comes on and works, unit should work and heat to 120 degrees factory set. If unit does not fire off then problem is the pcb(printed circuit board) and will need to be replaced . When new board arrives it will need to be programed...... hope this helps....

Sep 06, 2011 | Rheem RTG-74PVN-2 Natural Gas Pronto Whole...

1 Answer

Remote is flashing C8 and 76, alternating. I turn the unit off, then back on, and I get hot water for about 10 seconds, then it goes cold and the same error message occurs. Unit is Rheem Main Remote...


Before calling service technician, open following links for Rheem tankless resources including error codes and Rheem chat.
Disconnect wires from remote to see if system stabilizes. Unit will heat to default temperature without remote.

Error codes are considered start-point for troubleshooting.
C8 76 can mean PC board failure.
76 can mean communication failure with remote control
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/ErrorcodeTroubleshooting.pdf
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf

Jul 31, 2011 | Rheem Tankless Water Heater Main Remote...

1 Answer

I have a Rheem rtg 74dvp but its not heating and the display show me 1 76 and 2 76, and come all the time to 76 F and another times its blinking the temperature, but not heat


Error code 76 is communication problem between remote control and tankless unit.
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf
Multiple error codes could indicate that main PC board is bad.
Before calling service technician, open following link for troubleshooting resources including link to Rheem chat, manuals, error codes, etc.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Jul 15, 2011 | Rheem Tankless Water Heater RTG-74DVP...

1 Answer

Error code C4 76. Water heater shuts off (only with shower use). Will reset and work 4-5 min. then off agin. works fine from sinks. Unit is app 3 years old and did work fine.


Before calling service technician, open following link for Rheem tankless resources, including error codes and general help for homeowner.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

C7 76 is communication fault with remote control.
Remote is connected to tankless with a wire.
Usually you remove wires from terminals on tankless, and see if tankless functionality returns.
If tankless works fine, then it will heat to default 120 degrees.
Clean terminals and put them back.
If problem returns, then problem is then narrowed to bad wire, bad remote control, or problem inside tankless.
Since new remote control costs about $99, it might be cheaper to have service technician review the problem and catch up with maintenance.
Error codes are considered starting points for troubleshoot since error can have different soultion than same error on another unit.

Read manual for advisories, error codes, and required maintenance.
For example tankless might require monthly water filter cleaning, and yearly de-liming, and yearly burner cleaning.
Your service technician can advise what is typical for your region, since altitude, incoming water temperature, quality of water, water pressure, venting, are factors for maintaining water heater.

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

May 25, 2011 | Rheem EcoSense by 7.4 GPM Tankless Water...

2 Answers

I have a Rheem tanklees water heater, model RTG-74XN-2. The remote shows the following error code. C4 then the number 76 then C4 then 76. What does this code mean??


Contact Paloma/Rheem 866-720-2076. Super nice! I just called regarding mine. Having same problem Rheem Paloma sending parts out tomorrow overnite. Try turn it on/ off by moving tiny switch under the unit that tells you the temperature. Run your fingers along the bottom to find it. That is a temporary fix. Below is a website with all the error codes, so you know what is wrong. Good luck and blessings!

http://www.palomastore.com/paloma_error_codes.html

76
Communication Fault with Remote Control Check remote control wiring for loose or damaged connections. Bypass remote control cable by connection remote directly to remote control terminals on PCB (replace cable if found to be faulty). Replace remote control. Replace PCB

76
Communication Fault with Remote Control Check remote control wiring for loose or damaged connections. Bypass remote control cable by connection remote directly to remote control terminals on PCB (replace cable if found to be faulty). Replace remote control. Replace PCB

76
Communication Fault with Remote Control Check remote control wiring for loose or damaged connections. Bypass remote control cable by connection remote directly to remote control terminals on PCB (replace cable if found to be faulty). Replace remote control. Replace PCB

76
Communication Fault with Remote Control Check remote control wiring for loose or damaged connections. Bypass remote control cable by connection remote directly to remote control terminals on PCB (replace cable if found to be faulty). Replace remote control. Replace PCB

Nov 06, 2010 | Rheem Paloma PTG-74PVN / RTG-74PVN...

1 Answer

My tankless remote digital controller won't go above 76 degrees F


76 is an error code. Look in the owners manual and it will tell you what the problem is.

May 31, 2010 | Rinnai Digital Remote Water Heater Control...

1 Answer

Just under two year old C-4 76 CODE SOME WATER


the 76 code is a code for the remote control. if you have a remote installed check for loose wiring or it could be a fried remote disconnect it and see if it runs then

Jul 08, 2009 | Rheem Tankless Hot Water Heater...

1 Answer

No hot water from tankless water heater. Bliniking Readout


http://www.rheemtankless.com/content/tankless/rheem/help.shtml

This is there website.Above.
Use the live chat to ask them, the code you listed does not seem to correspond to there code list, the only code that does is code 76,
which is a problem with the remote control not talking to the unit.
So your best bet is to tell them the error.

Apr 07, 2009 | Rheem Tankless Water Heater Main Remote...

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