Diagnostic Points - Rinnai REU - 16 FUA - E Installation And User Manual

Flow
Chart Component
No.
GEARED
MORTOR
REMOTE CON
TROLS
WATER FLOW
SENSOR
FAN MOTOR
FLAME ROD
HOT WATER
THERMISTOR
AIR INTAKE
THERMISTOR
THERMAL
FUSE
IGNITOR
MAIN SOLE-
NOID VALVE
SOLENOID
VALVE 1
SOLENOID
VALVE 2
MODULATING
VALVE
TRANSFORMER VOLTAGES AND RESISTANCES
Connector Wire Color
W-W
H
D Or-Or
D B-Br
D Br-Y

DIAGNOSTIC POINTS

Determination (normal figure)
Measurement point
Upper : Voltage
CN Wire Color
Lower : Resistance, Current
I B-Br
AC200 AC240V
A R-B DC11 13V
1
10 30
R-Bk
DC11 13V
Y-Bk Below DC1V(limiter ON)
Below DC4 6V(limiter OFF)
Br-Bk Below DC1V(limiter ON)
Below DC4 6V(limiter OFF)
E Bk-W
DC11 13V
1
A R-Bk DC11 13V
2
Y-Bk
DC4 7V(pulse 17 400Hz)
B R-Bk
DC6 40V
1
Y-Bk
DC11 13V
W-Bk DC2 10V(pulse 20 400Hz)
C Y-earth
More than DC1 A
2
A W-W 15
4
30
45
60
105
A Y/Bk-Y 15
3
30
45
60
105
C R-switch
Less than 1
3
A
5
G Gy-Gy
AC200 240V
1
F P-Bk
DC200 240V
1
6.0 7.8K
F B-Bk DC200 240V
2
7.8 10.8K
F Y-Bk
DC200 240V
3
7.8 10.8K
C P-P
DC2 15V
1
67 83
Normal Value
AC200 240V 11 20
AC49 55V
AC12 14V
AC195 216V 175 215
11.4 14.0k
6.4 7.8k
3.6 4.5k
2.2 2.7k
0.6 0.8k
20.1 17.9k
10.2 8.9k
5.5 4.7k
3.1 2.6k
0.7 0.5k
1.3 1.7
0.7 1.3
45
Remark
AC power
Drive power
Control power
Full open limiter
Full close limiter
ON2.4L/min
(35Hz) over 2100
pulse/min.
OFF1.7L/min
(24Hz) below 1440
pulse/min
More than 1200
pulse/min
At ignition
Measure Thermis-
tor side (small wire)
Measure Thermis-
tor side (small wire)