Electrolux EN18WI30LS Service Manual page 22

<EN19WI30LS, EP19WI30LS>
Circuit Board Checkpoints
Ref.
Part
No.
Overheat Prevention
1
Device (Thermal Fuse)
Heat Exchanger Flow
2
Control Valve
Bypass Flow
3
Control Valve
4 Water Flow Sensor
Water Inlet
5
Thermistor
Water Outlet
6
Thermistor
Heat Exchanger
7
Thermistor
8 Exhaust Thermistor
9 Flame Rod
10 Fan Motor
11 Fan Motor
12 Igniter
Primary Gas
13
Solenoid Valve
14 Gas Solenoid Valve - 1
15 Gas Solenoid Valve - 2
16 Gas Proportioning Valve
17 Flame Rod
18 Gas Solenoid Valve - 3
19 Gas Solenoid Valve - 4
20 High Limit Switch
21 Air Inlet Thermistor
22 Water Level Electrode
Power Supply
-
(Power Circuit Board)
Power Supply
-
(Main Circuit Board)
- Remote Controller
Note 1) Inlet / Outlet / Heat Exchanger Thermistor Temperature Characteristics
Temperature (° F)
Temperature (° C)
Resistance (k ) Ω
Note 2) Exhaust Thermistor Temperature Characteristics
Temperature (° F)
Temperature (° C)
Resistance (k )
Ω
Voltage (V)
Note 3) Air Inlet Thermistor Temperature Characteristics
Temperature (° F)
Temperature (° C)
Ω
Resistance (k )
Circuit board Check points
CN & Pin No.
Wire color
CN10 3 W - BK
23 W - O
23 W - G
CN38 23 W - V
23 W - BK
6 Y - BL
23 W - O
23 W - G
CN38 23 W - V
23 W - BK
10 Y - BL
3 R - BL
CN38
5 Y - BL
CN63 4 W - W
CN63 1 W - W
CN63 3 W - W
CN63 7 W - W
BL -
1
Burnercase
CN78
BL -
1
Electrode
CN27 4 BR - BL
1 R - BL
CN27
3 Y - BL
CN197 1 BK - BL
CN10 5 W - BL
CN10 9 BK - BL
CN10 8 GY - BL
CN101 7 R - BL
BL -
1
Burnercase
CN78
BL -
1
Electrode
CN10 10 O - BL
CN10 7 BR - BL
CN10 3 W - W
CN63 5 W - W
CN38 31 W - BL
CN92 1 W - BK
C102 4 R - BL
CN89 1 BL - BL
32 50 68 86
0 10 20 30
23.7 15.5 10.3 7.0
-4 14 32 50
-20 -10 0 10
487 296 162 98.3
4.6 4.3 3.9 3.4
-4 14 32 50
-20 -10 0 10
106.5 59.6 34.4 20.6
Normal value
CN & Pin No.
Ω
1 CN10 2 or less
16 DC 1 - 16 V
18 DC 1 - 16 V
20 CN38 DC 1 - 16 V
24 DC 1 - 16 V
17 DC 1V or less
25 DC 1 - 16 V
26 DC 1 - 16 V
27 CN38 DC 1 - 16 V
28 DC 1 - 16 V
17 DC 1V or less
17 DC 14 - 16 V
DC 0.5 - 15 V
CN38
17 over 408 pulses/min.
(over 6.8Hz)
2 CN63 DC 1 - 4.5 V
2 CN63 DC 1 - 4.5 V
2 CN63 DC 1 - 4.5 V
2 CN63 Note 2)
GND - 10 kHz - 100 kHz
Flame
- DC 0.45 A or less
Rod
2 CN27 DC 7 - 45 V
2 DC 10 - 14 V
CN27
2 100 Hz - 400 Hz
3 CN102 DC 14 - 16 V
DC 14 - 16 V
6 CN10
19 - 31
DC 14 - 16 V
6 CN10
36 - 58
DC 14 - 16 V
6 CN10
36 - 58
DC 0.3 - 15 V
6 CN101
50 - 80
GND - 10 kHz - 100 kHz
Flame
- DC 1 A or more
Rod
DC 14 - 16 V
6 CN10
36 - 58
DC 14 - 16 V
6 CN10
36 - 58
12 CN10 1 Ω or less
2 CN63 DC 0.7 - 4.4 V
17 CN38 DC 14 - 16 V
3 CN92 AC 108 - 132 V
3 C102 DC 14 - 16 V
3 CN89 DC 14 - 16 V
104 122 140 158
40 50 60 70
4.9 3.5 2.5 1.9
68 86
Note 4) The ON/OFF condition of water level electrode
20 30
can be checked using the maintenance
61.4 39.5 monitors.
When maintenance monitor number 19 reads
2.8 2.3
"000", the condition of the electrode is normal.
When this monitor reads "001", the condition of
68 86
the electrode is abnormal.
20 30
12.6 8.0
22
Remarks
When valve is fully open
When valve is fully open
Y (+) BL (-)
32 - 212° F
0 - 100° C Note 1)
32 - 212° F
0 - 100° C Note 1)
32 - 212° F
0 - 100° C Note 1)
When no flame is detected
4 pulse/revolution
When igniter is sparking
When valve is open
Ω
Coil resistance
When valve is open
Ω
Coil resistance
When valve is open
Ω
Coil resistance
Ω
Coil resistance
At flame detection
When valve is open
Ω
Coil resistance
When valve is open
Ω
Coil resistance
Contact resistance
176
80
1.4
Note 2)
Note 3)
Note 4)