Rheem 64DV - Page 40

S V C 8 2 0 ( P ) P o c k e t M a n u a l P a g e 39
39
Blower Motor Diagnostics: OUTDOOR Models ONLY
Test DC voltage across
Blue and White wires
on connector G:
144 – 192 DC Volts
YES
Remove & reinsert G.
Operate unit again.
IF Code 10 appears:
Replace control board.
NO
Hold down MAX button.
Test DC voltage across
Blue & Red wires
on connector G:
12 – 18 DC Volts
YES
Remove & reinsert G.
Operate unit again.
IF Code 10 appears:
Replace control board.
NO
Hold down MAX button.
Test DC voltage across
Blue & Yellow wires
on connector G:
4 – 10 DC Volts
YES
Remove & reinsert G.
Operate unit again.
IF Code 10 appears:
Replace blower motor.
NO
Control board and blower
motor are OK.
CHECK VENTING.
IMPORTANT: While performing voltage checks, DO NOT touch
multimeter leads across YELLOW & RED wires. Damage may
occur to blower motor and control board.
Connector Location
On Page 14
Upper Right-Hand Corner of Control Board
MIN
MAX