Error Code - Rheem 64DV Troubleshooting Manual

52 | P a g e S V C 8 2 0 ( P ) P o c k e t M a n u a l
Explanation: The hot water temperature and/or heat
exchanger temperature reached 207 degrees F for
more than 15 seconds.
Diagnostic Checks:

GAS SUPPLY & VENTING (refer to pages 8-11)

Sediment build-up in heat exchanger

Heat exchanger thermistor
Sediment Build-Up Diagnostics
Go to Error Code 1L for flushing instructions.
Heat Exchanger Thermistor Diagnostics
Go to Error Code - 32 for heat exchanger thermistor
diagnostic instructions.
52
15 – Error Code