Rheem 871018 Service Instructions Manual page 27

Hot tap closed
Water flow sensor off
G . I . S . V ( SVO ) off
or
[ S . V . 1 - 3 ( SV 1 - 3 ) off ]
P . G . F . R Valve at
minimum
Fan motor at
minimum
LED off
Fan motor at
minimum
C . I . Off
YES
4
Flame current
detected less than
0 . 1 uA ?
YES
G . I . S . V ( SVO ) off
or
[ S . V . 1 - 3 ( SV 1 - 3 ) off ]
P . G . F . R Valve off
YES
Fan
motor speed
checked during
operation ?
YES
5
Fan
motor current check
NO ok ?
YES
Fan off
Approx . 6 minutes later
Note: see page 24 for details on interpreting chart abbreviations.
TM031 Integrity 18, 20, 24, 26L Service Instructions REV: B
D.O.I: February 2008
This document is stored and maintained electronically by
Operation Flow Chart 4 & 5
Post Purge Shut Down Function
Check gas cut off function by
alternating the closing order of
gas valves SVO and SV 1 - 3 at
each shut down
8 seconds later
NO
NO
Abnormal combustion
99 Flashing
Fan off
Isolate power
Locate and repair fault
Use procedure to
clear error code 99
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
S . V . 1 - 3 ( SV 1 - 3 )
failure
80 Flashing
10 seconds later
27
G . I . S . V ( SV 0 ) failure
51 Flashing
S . V . 1 ( SV 1 ) off
S . V . 2 ( SV 2 ) off
S . V . 3 ( SV 3 ) off
G . I . S . V ( SV 0 ) off
P . G . F . R valve off
Fan off 10 seconds later
Isolate power
Locate and repair fault
and restore power