Error Code - Rheem 64DV Troubleshooting Manual

64 | P a g e S V C 8 2 0 ( P ) P o c k e t M a n u a l
Explanation: Ambient thermistor malfunction.
Diagnostic Checks:

Ambient thermistor
Turn Power OFF. Remove connector R :
64X; 84X; 95X; H95X; H95DV: 2K – 72K Ohms
Reinsert connector R .
Operate unit.
IF Error Code 34 appears:
Replace control board.
Connector Location
On Page 14
CONTROL
BRACKET
64
34 – Error Code
Measure resistance between
#3 wire (Black) & #7 wire (Blue):
64DV; 84DV; 95DV: 7K – 23K Ohms
Remove control board
bracket to access ambient
thermistor Molex near
blower motor
(How to Remove: Section 1).
Continue diagnostics
on next page.