Rinnai C42e - Page 12

Rinnai Water Heater Service Manual 12 100000098 Rev B
Electrical Diagnostic Points
R70e, R/C85e(PLUS),
R/C53i(PLUS), R/C85i(PLUS)
Wire Color Voltage Resistance Connector No. Pin No.’s
(TR) Transformer
Black - White 90 - 100 VAC 51-63 ohms F9 1 ~ 2
Blue - Brown 108 - 132 VAC 51-63 ohms F7 1 ~ 3
(SV1, SV2, SV3, POV) Gas Valve and Modulating Solenoids
(Main) Pink - Black
80 - 100 VDC 1.7 - 2 K ohms
E1 1 ~ 2
(SV1) Black - Yellow E2 1 ~ 2
(SV2) Black - Blue E3 1 ~ 2
(SV3) Black - Brown E4 1 ~ 2
(POV) Pink - Pink 2 - 15 VDC 67 - 81 ohms C2 1 ~ 2
(M) Water Flow Servo
Red - Blue 11 - 13 VDC 22 - 26 ohms
B1 outdoor
models
B2 indoor
models
1 ~ 2
Gray - Brown 4 - 6 VDC N/A 6 ~ 3
Gray - Yellow N/A N/A 6 ~ 5
Gray - Orange 11 - 14 VDC N/A 6 ~ 4
NOTE: At the B connector on the PCB: gray wire turns to black, orange wire turns to red
(QS) Water Flow Sensor
Black - Red 11 - 13 VDC 5.5 - 6.2 K ohms 1 ~ 3
Yellow - Black 4 - 7 VDC 1 - 1.4 mega ohms 2 ~ 3
Bypass Flow Control (only on R/C85e, R/C85ePLUS, R/C85i, R/C85iPLUS)
Brown - White
2 - 6 VDC
(unit in operating
mode)
15 - 35 K ohms
G1 (plug between
bypass and PCB)
1 ~ 5
Orange - White 2 ~ 5
Yellow - White 3 ~ 5
Red - White/Ground 4 ~ 5
(IG) Ignition System
Gray - Gray 90 - 100 VAC N/A F8 1 ~ 2
(FM) Combustion Fan Motor
Red - Black 6 - 45 VDC N/A A1 1 ~ 2
White - Black 5 - 10 VDC 9.2 - 9.4 K ohms A1 2 ~ 4
Yellow - Black 11 ~ 13 VDC 3.5 - 3.9 K ohms A1 2 ~ 3
With the meter set on hertz scale, 60-350 hertz should be across the red and yellow wires at
terminals 2 and 3.
B1 outdoor
models
B2 indoor
models