Operational Flow Charts - Rheem 874W27NF Service Manual

OPERATIONAL FLOW CHARTS

Plug In
1
Power On
Initial check
normal?
Bath fill
operation
YES
B
Remote controller
switched on
On/Off lamp On
Remote controller
display on
Hot water tap open
1
Water flow
3
sensor on?
E
Max & Min
buttons off?
YES
Fan On
4
Inlet
5
thermistor ok?
YES
Heat exchanger
6
thermistor ok?
YES
Outlet
7
thermistor ok?
YES
Ambient air
17
thermistor ok?
2
YES
Fan speed
4
normal?
YES
A
False flame
8
detected?
Leakage >
NO
than 0.1uA
9 P.G.F.R Valve on
10 G.I.S.V (SVO) on
11 Igniter on
P.G.F.R Valve off
18 S.V.3 (SV3) on
F
TM061 Rheem 27 Water Star Service Instructions – Issued: 11/10
REV A Issued 08/13
This document is stored and maintained electronically by
Operational Flow Chart 1
Error code cleared
NO
Functional
problem on gas
type circuit board
82 Flashing
Fan motor current
detection failure
79 Flashing
NO
YES
Input temp
YES > 60ºC or >
set temp?
YES
NO 24 Flashing
20 seconds later
NO 31 Flashing
NO 32 Flashing
NO 33 Flashing
NO 34 Flashing
NO 61 Flashing
5 seconds later
YES 72 Flashing
5 seconds later
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
Isolate Power
Communication
problem between
remote controller
and the heater
76 Flashing
G.I.S.V control Over heat limiter
failure failure
71 Flashing 14 Flashing
NO
Input temp < or =
58ºC & < or = set
NO
temp - 2ºC?
Fan On
On/Off lamp Off
Remote controller
display off
Remote controller
switched off
Fan Off
10 seconds later
2
Fan On 5
Water Flow Sensor
off
Hot water tap closed
F1
16