Rinnai ENERGYSAVER RHFE-308FTR, Service Manual

Page: 26 / 64

Energysaver RHFE-308 FTR - 21 - ©Rinnai
13. Diagnostic Points
* “Flow” denotes references on the “Operation Flow Chart” on page 18.
* “CN” denotes connector number on the “Wiring Diagram” on page 22.
Transformer Values
Flow CN Component Wire Colour Value (Normal)
1 I ON-OFF Switch red - blue
DC 3 ~ 10 V, resistance 1
Ω
(current flows when switched on)
blue - blue
2
H Overheat Circuit white - black
Less than DC 1 V; < 4
Ω
(current flows)
H1 Overheat SW 1 white - red
< DC 1 V
< 1
Ω
(current flows)
H2 Overheat SW 2 red - black
H3 Thermal Fuse white - white
3 A Overheat
Thermistor
white - white
0.6 ~ 523 k
Ω
( < 0.6 k
Ω
: short, >523 k
Ω
: open
temperature
20°C: 78 k
Ω
, 100°C: 3.6 k
Ω
, 150°C: 1.1 k
Ω
4 A Room Temp.
Thermistor
yellow-yellow
1.8 ~ 844 k
Ω
( < 1.8 k
Ω
: short, >844 k
Ω
: open
temperature
0°C: 123 k
Ω
, 20°C: 39 k
Ω
, 40°C: 14 k
Ω
6 E1 Flame Rod yellow-yellow < DC 0.1 µA
7 G Combustion Fan red -black DC 7 ~ 40 V; > 10 M
Ω
white - black DC 1 ~ 4 V; > 3420 pulse/min (> 57 Hz
9 G Combustion Fan
black - white below ignition revo 120 rpm
initial ignition LP: 3480, NG: 3600 pulse/min
re-ignition LP: 3720, NG: 3780 pulse/min
10 F Sparker blue-red AC 85 ~ 110 V
11 F Solenoids 1 & 2 black - yellow
DC 78 ~ 100 V, 1.3 ~ 2.2 k
Ω
12 H Modulating Valv grey - grey
DC 1 ~ 15 V (low ~ high) 80 ~ 100
Ω
14 A
Over-heat
Thermistor
white - white
(filter
indicator
high
flashes below 50 Hz; 2.2 k
Ω
low
flashes below 8.6 k
Ω
15 G
Combustion
Fan
white - black
(normal rpm)
high LP: 5760, NG: 5700 pulse/min
low LP: 3000, NG: 3240 pulse/min
16 A
Over-heat
Thermistor
white - white
(OHS on)
high
operates belo 1.7 k
Ω
low
operates below 5.3 k
Ω
17 D Convection Fan grey - pink
AC 50 ~ 108 V (low ~ high), 90 ~ 180
Ω
Wiring Diagram Australia [240 V] New Zealand [230 V]
E
Yellow - Blue
AC 130 ~ 180 V; 200 ~ 400
Ω
AC 130 ~ 180 V; 200 ~ 400
Ω
Blue - Black
AC 10 ~ 16 V; 1 ~ 3
Ω
AC 10 ~ 16 V; 1 ~ 3
Ω
Red - Red
AC 25 ~ 50 V; 1 ~ 3
Ω
AC 25 ~ 50 V; 1 ~ 3
Ω
B Grey - Grey AC 216 ~ 264 AC 207 ~ 253 V