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TROUBLESHOOTING & REPAIR | ||
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FIRING BOARD TEST
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15.Test the Output Pilot Relay (4CR) for operation by removing and replacing the jumper wire repeat- edly from terminal #2. See Figure F.7. This should cause the relay contacts to open and close. The contacts can be seen closing and opening through the clear plastic relay case or can be heard opening
and closing. If the Output Pilot Relay (4CR) does not close when energized, check for loose or faulty wiring. See Wiring Diagram and Figure
16.Replace the Firing Board if the above voltage and control relay tests are passed. It may be faulty.
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