Bradford White IGI-180R-10 Service Manual page 37

VI - TROUBLESHOOTING
3) Is the remote control normal ?
1) Is the water flow sensor normal ?
(cont.)
Check voltage between the two remote control cable
connectors.
a.
No combustion (despite remote control indication)
Check the water flow sensor.
a.
b.
Check the voltage between terminals on the
remote control terminal mount D
Normal: 11 ~ 13 VDC
If normal, check for an open circuit or short before
replacing the remote control.
Faulty: Replace PCB.
(Service Procedure IGI-2, page 49)
Check the voltage at PCB connector B4 , red and
black wires.
Normal: 11 ~ 13 VDC or 5.8 ~ 6.4K Ω
If normal, check (b) below.
Faulty: Replace the PCB.
(Service Procedure IGI-2, page 49)
Check the voltage at PCB connector B4, yellow and
black wires.
Normal: 4 ~ 7 VDC or 1M ~ 1.2M Ω.
If normal, proceed to check item 2 on next page.
Faulty: Replace the water flow sensor.
(Service Procedure IGI-2, page 49)
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