Rheem 64DV - Page 92

S V C 8 2 0 ( P ) P o c k e t M a n u a l P a g e 91
91
In 10 second intervals; cycle
unit 3 times by turning unit:
ON-OFF; ON-OFF; ON-OFF
Does 0Y status in
maintenance mode indicate
presence of flame after 5
seconds?
YES
Unit appears to be OK.
Operate unit.
IF 80 – Error Code appears:
Replace control board.
NO
Disconnect wires at flame
rod(s). While viewing burner
chamber through sight glass:
In 10 second intervals; cycle
unit 3 times:
ON-OFF; ON-OFF; ON-OFF
Does 0Y status in
maintenance mode indicate
presence of flame after 5
seconds?
YES
Clean flame rod(s).
IF 80 – 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 OFF.
IF Flame Rod(s) is detecting flame, maintenance mode will
display:
Indoor Units: 05
Outdoor Units: 01