Rheem 64DV - Page 82

S V C 8 2 0 ( P ) P o c k e t M a n u a l P a g e 81
81
(See maintenance mode instructions on page 21)
72 – Error Code
Explanation: Flame rod(s) malfunction. Flame rod(s)
is detecting the presence of flame BEFORE igniter is
activated.
Diagnostic Checks:
 Flame rod(s)
 Gas control valve
Turn Power OFF.
Remove and reinsert connector M, T,
and terminal on flame rod(s).
Turn Power ON and operate unit.
Did 72 – Error Code appear?
Indoor models – 2 flame rods (Connectors M& T).
Outdoor models – 1 flame rod (Connector M).
Access maintenance mode to
check flame rod status.
Locate sight glass.
Continue to diagnostic chart
on next page.
YES
Unit had a loose connection
or foreign debris that is no
longer present.
Unit appears to be operating
OK.
NO
Connector Location
On Page 14
SIGHT GLASS
FLAME ROD(S)