Rheem 871018 Service Instructions Manual page 22

F
11 G.I.S.V (SVO) on
Igniter on
12
P.G.F.R Valve off
13 S.V.1 (SV1) on
0.1 seconds later
14 S.V. 2 (SV2) on
10 P.G.F.R Valve on
Flame
16
Detected?
3 seconds later
Leakage >
than 0.1uA
YES
[on] displayed
C.I. on
Igniter off
Gas rate change-over
Proportional temperature
adjustment done by solenoid valves
3 Hot water volume
adjustment
871018-B / 875018-B
871020-B / 875020-B
& *solenoid bypass
models
*Mechanical bypass
models
NO
*For models without a -B suffix e.g. 871020NF compare
appliance to wiring diagram to determine whether it has
Low rate
combustion?
YES
NO
10 Flashing
Safety
device
working?
Z
YES
TM002 Integrity 18 & 20L Service Instructions REV: E
D.O.I: 7/11/2007
This document is stored and maintained electronically by
Igniter off
S.V. 2 (SV2) off
S.V. 1 (SV1) off
G.I.S.V (SVO) off
P.G.F.R Valve off
YES
First
NO ignition
trial?
NO
11 Flashing
Igniter off
Set
temp. 46 degrees
or lower?
NO
19
YES
Solenoid bypass Solenoid bypass
valve on valve off
a mechanical or solenoid operated bypass
79 Flashing 14 Flashing 15 Flashing
Fan motor
Outlet water
temp exceeded
current
O.H.L failure
97 degrees for
detection
more than 15
failure
seconds
Note: see page 20 for details on interpreting chart abbreviations.
Operational Flow Chart 2
F1
G.I.S.V (SVO) off
S.V. 1 (SV1) off
S.V. 2 (SV2) off
P.G.F.R Valve off
C.I. Off
16 Flashing 71 Flashing 76 Flashing
Communication
Outlet water
G.I.S.V control
problem between
temperature
failure remote controller
too high
and water heater
31 Flashing 32 Flashing 33 Flashing 34 Flashing
Heat
Water inlet Outlet
exchanger
thermistor thermistor
thermistor
disconnected disconnected disconnected
disconnected
22
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
61 Flashing 81 Flashing 65 Flashing
Malfunction of
Abnormal fan Post purge
water volume
speed failure
control motor
35 Flashing 11 Flashing 12 Flashing
Ambient air Thermistor
Cross light
thermistor connections Flame Failure
failure
crossed
52 Flashing 99 Flashing
P.G.F.R Abnormal
control failure combustion
56 Flashing
Malfunction of
water by-pass
solenoid valve.