Question about Rheem Tankless Hot Water Heater Rtg-74pvp-2 7.4 Gpm
Someone has stated above that checking the wires from the remote to the unit will solve this. I have not done this yet, but can't imagine after 3 years of use, the wires "all of a sudden" go bad. It seems to be a speratic problem. Shutting the unit off, and then on again seems to fix it for a while. Does anyone know a another reason this might happen? Thanks in advance for your help.
I had the same problem. Rheem/Paloma tech support 1-800-431-1549 checked the error codes and sent me a new motherboard next day air. Since I stil needed hot water, I disconnected the remote control from the heater and it worked fine (just turn power off on remote, open front door of unit and unscreww/disconnect the 2 wires coming from the remote). The motherboard arrived and I installed and it works fine. However, you will need 1 person working on unit and one reading the codes/numbers on the remote (my unit is outdoors and the remote display is indoors, so it was not a 1-person job). Tech support was very helpful.
Posted on Oct 31, 2009
I have the same issue. I spoke with Paloma tech support dept - 800-432-8373 and he explained this is a communication error. It is getting to cycle 7 and stopping (C7). The fix unfortunately is a new motherboard (PCB). I was able to provide him with my serial/model number (you need to have this info) and they are shipping 1 to me because on warrenty. I have nto received yet, but it is a do it yourself fix - so we will see.
Posted on Oct 19, 2009
The PCV board could be shot call rheem to have them run you through a diagonsis
Posted on Oct 03, 2009
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Posted on Jan 02, 2017
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