Bradford White IGI-180R-10N - Manual (Page 37)

3) Is the remote control normal ?
No combustion (despite remote control indication)
1) Is the water flow sensor normal ?
37
Check voltage between the two remote control cable
connectors.
a. Check the voltage between terminals on the
remote control terminal mount D
1
.
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 water flow sensor.
a.
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)
b. 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)
VI - TROUBLESHOOTING
(cont.)