Rheem 874W27NF, Руководство по обслуживанию, Страница: 40 / 61

40
TM061 Rheem 27 Water Star Service Instructions
– Issued: 11/10
REV A Issued 08/13
This document is stored and maintained electronically by Service. Al
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Fault Finding Tests 18 - 23
Tests 18 & 19
Conduct test with water flowing
Using a multimeter set on the DC volts scale, measure the
voltage at connector J whilst plugged into PCB.
Test Check Point Measured Value
18
6 White
– 4 Blue
DC144 - 192V
3 Red
– 4 Blue
DC12 - 18V
19 1 Yellow
– 4 Blue
DC4 - 10V
(or measurement by pulse
counter of not less than
4800 pulses per minute)
Test 20 & 21 Test 22 & 23
Conduct test with water flowing
Using a multimeter set on the DC volts scale,
measure the voltage at connector N whilst
plugged into PCB.
Conduct test with water flowing
Using a multimeter set on the DC volts scale,
measure the voltage at connector M whilst
plugged into PCB.
Test Check Point Measured Value Test Check Point Measured Value
20 7 Red - 8 Black DC8
– 16V
22 7 Red - 8 Black DC8
– 16V
21 2 White - 8 Black DC8
– 16V
23 2 White - 8 Black DC8
– 16V
BK R Y BR G W
4 5 6 8 7
R
BK
BK
R
4
2
6
5
P
Y
1
2
3
4
BL
O
W
BR
R
BK
4
3
1
8
7
6
5
N
9
Y
G 5
6
1
2
3
4
SW1 SW2
1
3
SW3 SW2 SW1
BL
O
W
BR
R
BK
Y
G
4
3
1
8
7
6
5
M
G
Y
9
O
N
6
7
8
1
2
BK
R
BR
W
4
3
2
W