434Fta, 559Fta Troubleshooting - Rinnai RHFE-551FA Service Manual

Troubleshooting
Part
Control Panel
OHS.
TF
O.H. TH
White - White
(Filter sign)
White - White
(The TH operate)
Room
Thermistor
FR
Ignition
Combustion Fan
revolution
(In case of short
vent.)
Normal
revolution
Ignition
Combustion Fan
revolution
(In case of long
vent.)
Normal
revolution
Ignitor
SV
Modulating Valve
Convection Fan
Pressure Sensor
Transformer
Gray - Gray
White - White
Red - Red
Brown - Brown
Black - Blue
Black - Yellow
40
Wire
Red - Blue
Blue - Blue
White - White
Blue - White (OHS1)
Blue - White (OHS2)
White - White (TF)
White - White
Temperature
Low
High
Low
Yellow - Yellow
Temperature
Yellow - Yellow
White - Black
Initial
Re-attempt
High
Low
White - Black
Initial
Re-attempt
High
Low
Red - Blue
Black-White
Black-Yellow
Red-White
Red - Black
Red - White
60Hz-120V
AC108-132V, 5-20Ω
AC95-120V, 5-20Ω
AC20-40V, 0.5-2.0Ω
AC10-30V, 1-5Ω
AC10-30V, 1.0-3.0Ω
AC200-240V, 200-450Ω
Rinnai Direct Vent Service Manual
434FTA
DC0-5V (Pulsed voltage)
Resistance is infinity, but the current flows when the switch is pushed.
Below DC 1V, Below 2Ω
0.87-482kΩ, (<0.87kΩ:Short, >482kΩ:Open)
32°F (0°C):214kΩ, 68°F (20°C):78kΩ, 122°F (50°C):21kΩ
176°F (80°C):7.3kΩ, 212°F (100°C):3.6kΩ, 135°F (275°C):1.5kΩ
Flashes below 6.83kΩ
Flashes below 10.2kΩ
Operates below 4.97kΩ
Operates below 7.29kΩ
1.82-707kΩ, (<1.82kΩ:Short, >707kΩ:Open)
32°F (0°C):113kΩ, 68°F (20°C):39kΩ,
86°F (30°C):24kΩ, 104°F (40°C):15kΩ
Below 0.1μA （During Stop)
Below ignition revolution +2Hz
LP: 65Hz, NG: 70Hz
LP: 65Hz, NG: 70Hz
LP: 105Hz, NG: 105Hz
LP: 70Hz, NG: 70Hz
Same as short vent
80-100V, 1.5-2.5kΩ
DC2-15V（Low-High), 60-90Ω
50-110V, 70-160Ω
RHFE-434FTA
RHFE-559FTA
559FTA
Flashes below 6.40kΩ
LP: 120Hz, NG: 120Hz
90-120V
DC3 - 7V