Rheem 64DV - Page 84

S V C 8 2 0 ( P ) P o c k e t M a n u a l P a g e 83
83
Operate unit.
Does 0Y status in
maintenance mode indicate
presence of flame BEFORE
igniter rod sparks?
YES
Unit appears to be OK.
Operate unit.
IF 72 – Error Code appears:
Replace control board.
NO
Turn Power OFF.
Unplug unit. Disconnect
wires at flame rod(s). Plug
unit in.
Turn Power ON.
Operate unit.
Does 0Y status in
maintenance mode indicate
presence of flame BEFORE
igniter rod sparks?
YES
Clean flame rod(s).
IF 72 – Error Code appears
after cleaning flame rod(s):
Replace flame rod(s).
NO
Remove & clean burner
assembly.
On remote control, go to maintenance mode 0Y table.
For maintenance mode instructions go to page 21.
All maintenance mode ‘0Y’ readings should be done
immediately after turning the unit ON. IF Flame Rod(s) is
detecting flame, maintenance mode will display:
Indoor Units: 05
Outdoor Units: 01