Flow Chart - Rinnai Infinity 20 External Operation And Installation Manual

3.5 FLOW CHART

OPERATIONAL FLOW CHART
OPERATION
Insert power plug socket
NO
Current Fuse
on PCB normal
YES
NO
Overheat
switch normal
YES
Water flow control
device full open
Normal
NO
Connection of remote
control
Hot water Temp.
YES
＝ｆｉｘｅｄ Ｔｅｍｐ．
ON/OFF Switch ON
Remote control Indicator ON
NO
Ambient temp.
sensor normal
YES
Hot water tap open
A
Water flow
NO
sensor ON more than
1.5*L/min
*Min. flow depenes
YES
on the set temp.
and water conditions.
Combustion fan ON
Fan rotation
NO
detected
normal
YES
Initial check
NO
normal
YES
Ｉｇｎｉｔｅｒ ＯＮ
Fan revolution for ignition
Main solenoid valve ON
Fan revolution:High
Solenoid valve 1 ON
Ｍｏｄｕｌａｔｉｎｇ ｓｏｌｅｎｏｉｄ ｖａｌｖｅ ＯＮ
Solenoid valve 1 OFF
Main solenoid valve OFF
NO
Ｍｏｄｕｌａｔｉｎｇ ｓｏｌｅｎｏｉｄ ｖａｌｖｅ ＯＦＦ
Flame detected
（ｍｏｒｅ ｔｈａｎ １μＡ）
YES
Combution indicator ON
Ｉｇｎｉｔｅｒ ＯＦＦ
Gas modulating
control ON
Solenoid valve 2 ON
Water flow control ON
NO
Fan control
normal
Automatic fan
revolution revision
YES
NO
Flame detected
（ｍｏｒｅ ｔｈａｎ １μＡ）
Flame failure
YES
Safety device NO
normal
YES
Outgoing temp.
> ｔｈａｎ Ｓｅｔ ｔｅｍｐ
NO
＋５℃
YES
Model: REU-A2024WD-E
Water flow control
14 flashing
device full close
Anti-frost heater
ON:20 min. OFF:10 min.
41 flashing
Combustion fan rotation abnormal
( 12.5 seconds after a )
Air supply and combustion
air duct is blocked
Control circuit short
Thermal fuse operates
Overheat switch operates
Outgoing water thermistor faulty
Heat Exchanger outgoing
water thermistor faulty
Modulating solenoid valve faulty
Solenoid valve circuit faulty
False flame sensed
PCB faulty
DIP switch setting faulty
(2 seconds)
Solenoid valve 2 OFF
Solenoid valve 1 OFF
Main solenoid valve OFF
Ｍｏｄｕｌａｔｉｎｇ ｓｏｌｅｎｏｉｄ ｖａｌｖｅ ＯＦＦ
YES
NO
Ignition failure
is less than
2 time
Flame current abnormal
Ｉｇｎｉｔｅｒ ＯＦＦ
Control circuit short
(after 4 seconds)
Thermal fuse operates
Overheat switch operates
Outgoing water temp.
ｉｓ ｍｏｒｅ ｔｈａｎ ９５℃
Outgoing water thermistor faulty
Heat Exchanger outgoing
water thermistor faulty
Modulating solenoid valve faulty
YES
Combustion fan rotation abnormal
NO
First time of
flame failure Solenoid valve circuit faulty
Combustion faulty
PCB faulty
DIP switch setting faulty
Main solenoid valve OFF
Solenoid valve 1 OFF
Solenoid valve 2 OFF
Ｍｏｄｕｌａｔｉｎｇ ｓｏｌｅｎｏｉｄ ｖａｌｖｅ ＯＦＦ
Combution indicator OFF
Combustion fan OFF
Outgoing temp.
NO
< ｔｈａｎ Ｓｅｔ ｔｅｍｐ
＋２℃
YES
A
Eliminate cause
Remove power plug
from socket
Water flow control
device full open
Remote control Indicator OFF
ON/OFF Switch OFF
Error code indecate OFF
Ｗａｔｅｒ ｆｌｏｗ ｓｅｎｓｏｒ ＯＦＦ
Hot water tap shut
combustion fan OFF
61 flashing
10 flashing
19 flashing
14 flashing
※
32 flashing
33 flashing
52 flashing
71 flashing
72 flashing
70 flashing
21 flashing
Ｍｏｄｕｌａｔｉｎｇ ｓｏｌｅｎｏｉｄ ｖａｌｖｅ ＯＦＦ
Solenoid valve 2 OFF
Solenoid valve 1 OFF
Main solenoid valve OFF
11 flashing
Combution indicator OFF
12 flashing
19 flashing
14 flashing
※
16 flashing
32 flashing
33 flashing
52 flashing
61 flashing
71 flashing
10 flashing
70 flashing
21 flashing
: Only applicable when remote control is connected
: water flow control device full close
※
Except code '14'
TURN OFF
Hot water tap shut
Water
NO
flow sensor OFF
Under 1L/min
YES
Main solenoid valve OFF
Solenoid valve 1 OFF
Solenoid valve 2 OFF
Ｍｏｄｕｌａｔｉｎｇ ｓｏｌｅｎｏｉｄ ｖａｌｖｅ ＯＦＦ
Combution indicator OFF
Combustion fan OFF
35