Rheem 64DV - Page 78

S V C 8 2 0 ( P ) P o c k e t M a n u a l P a g e 77
77
While water is flowing & unit
is attempting to ignite; check
DC volts across White &
Black wires at connector C:
8 – 16 DC Volts
YES
Check connector C.
Operate unit again. IF code
65 appears:
Replace control board.
NO
Turn Power OFF then ON.
While water is flowing & unit
is attempting to ignite; check
DC volts across Red & Black
wires at connector C:
8 – 16 DC Volts
YES
Check connector C.
Operate unit again. IF code
65 appears:
Replace control board.
NO
Turn Power OFF then ON.
While water is flowing & unit
is attempting to ignite; check
DC volts across Green &
Black wires at connector C:
4 – 6 DC Volts
YES
Check connector C.
Operate unit again. IF code
65 appears:
Replace control board.
NO
Operate unit. IF 65 – Error
Code appears:
Replace water volume
control valve..
CAUTION: Hot water temperatures above
120 will scald. Return to original setting
once test is complete.
If voltages are NOT
registering, ATTEMPT to
activate water volume control
valve by turning remote control
to highest temperature
setting & opening all
hot water fixtures.