Rinnai REU-2007W, Service Manual

Page: 34 / 69

Infinity REU-2007,2008,2408,2424 - 29 - ©Rinnai
)5*. /
Insert power plug in socket
Fuse/elec.
leak safety device
normal?
Remote control
signal normal?
ON/OFF Switch ON
Set Temp displayed
Hot water tap open
Initial check
normal?
Fan rpm check
Sparker ON
Main gas sld SV1 Open
Change-over sld SV2 Open
Modulating valve Open
Combustion fan
rotation abnormal
False flame sensed
Solenoid valve circuit faulty
Thermistor faulty
Thermal fuse melted
Overheat switch faulty
Modulating valve Closed
Change-over sld SV2 Closed
Main gas sld SV1 Closed
Sparker OFF
Pre-purge (2 sec)
Water flow ON
2.7 L/min or
more
Combustion fan operates
Pre-purge
14 Flashing
32 Flashing
71 Flashing
72 Flashing
61 Flashing
61 Flashing
Modulating valve Closed
(Change-over sld SV3 Closed)
Change-over sld SV2 Closed
Main gas sld SV1 Closed
Eliminate cause
Pull out power plug
Remote control indicators OFF
ON/OFF Switch OFF
Error display OFF
Water flow sensor stopped
Combustion fan OFF
Hot water tap closed
ττττ
ττττ
a
3
4
ττττ
Yes
Yes
No
Yes
Yes
Yes
No
No
No
Not OK
1
2
9
10
11
12
( after 4 seconds )
(Sparker OFF)
4
5
6
7
( 12.5 seconds after a )
( after 5 seconds )
A
ττττ
ττττ
ττττ
ττττ
ττττ
ττττ
ττττ
ττττ
ττττ
Mod. sld valve answer abnormal
Fan initial power flow abnormal 90 Flashing
52 Flashing
ττττ
ττττ
4
8
B
C
D
ττττ
Only applicable when
remote control is connected