Delime/descale tankless heat exchanger.
http://waterheatertimer.org/pdf/Rheem-De-lime-tankless.pdf
Copy following link for troubleshoot resources:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
Posted on Nov 02, 2012
Hi,
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Posted on Jan 02, 2017
SOURCE: need instruction how to flush Rinnai tanklees hot water heater
Found this link on how to do it:
Hope it helps.
Posted on May 07, 2010
SOURCE: rheem gas tankless water heater with error code c4 13
problem is inside burner compartment o2 sensor dirty or block..need to have a qualify technician clean it.
Posted on Jul 31, 2010
SOURCE: I have a Rheem tanklees water heater, model
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! 76 76 76 76
http://www.palomastore.com/paloma_error_codes.html
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
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
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
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
Posted on Nov 09, 2010
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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...
Jun 27, 2009 | Rheem Tankless Water Heater Main Remote...
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