Rinnai C42e - Page 14

Rinnai Water Heater Service Manual 14 100000098 Rev B
Electrical Diagnostic Points
R/C98e(ASME),
R/C98i(ASME)
Wire Color Voltage Resistance Connector No. Pin No.’s
(SV1, SV2, SV3, POV) Gas Valve and Modulating Solenoids
(Main) Pink - Black
11 - 13 VDC
24 - 28 ohms F1 (pins 1, 2) 4 ~ 5(F)
(SV1) Black - Red F2 (pins 1, 2) 3 ~ 4(F)
(SV2) Black - Orange F3 (pins 1, 2) 2 ~ 4(F)
(SV3) Black - Yellow F4 (pins 1, 2) 1 ~ 4(F)
(POV) Orange - Orange 3 - 15 VDC 67 - 81 ohms E2 (pins 1, 2) 3 ~ 4(E)
(M) Water Flow Servo
Red - Blue 11 - 13 VDC N/A G6 (pins 1, 2) 5 ~ 6(G)
Gray - Brown (closed
position)
below 1 VDC Limiter On
G6 (pins 5, 3) 8 ~ 11(G)
4 - 6 VDC Limiter Off
Gray - Yellow (open
position)
below 1 VDC Limiter On
G6 (pins 5, 4) 7 ~ 11(G)
4 - 6 VDC Limiter Off
NOTE: At the G connector on the PCB: gray wire turns to black
(QS) Water Flow Sensor
Black - Red 11 - 13 VDC N/A G3 (pins 3, 1) 9 ~ 15(G)
Yellow - Black 4 - 7 VDC N/A G3 (pins 2, 3) 11 ~ 15(G)
Bypass Flow Control
Brown - White
2 - 6 VDC
(unit in operating
mode)
15 - 35 K ohms
H1 (pins 1, 5) 1(H) ~ 9(G)
Orange - White 3(H) ~ 9(G)
Yellow - White 4(H) ~ 9(G)
Red - White/Ground 2(H) ~ 9(G)
NOTE: At the G connector on the PCB: white wire turns to red
(IG) Ignition System
Gray - Gray 90 - 100 VAC N/A C1 1 ~ 2(C)
(FM) Combustion Fan Motor
Red - Black 6 - 45 VDC N/A B1 1 ~ 2(B)
White - Black 5 - 10 VDC N/A B1 2 ~ 4(B)
Yellow - Black 11 ~ 13 VDC N/A B1 2 ~ 3(B)
With the meter set on hertz scale, 17-460 hertz should be across the white and black wires at terminals 2
and 4.
37 - 43 ohms
H1 (pins 2, 5)
H1 (pins 3, 5)
H1 (pins 4, 5)