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REPLACEABLE FUSE
The following applies only to the YB110 controls operating at 120 VAC, 50/60 Hz:
The chassis/amplifier modules are designed with a field replaceable fuse to protect Terminals 5, 6, 7 and W against
short circuit loads or mis-wiring. In the event the fuse becomes OPEN, the display will indicate CHECK FUSE or
the CLOSE DAMPER, AUTO and IGN LED’s lights. An OPEN or blown fuse is a result of an over current
condition on Terminals 5, 6, 7, or W. The over current condition causing the fuse to OPEN must be resolved before
another attempt to apply power.
The fuse is located on the printed circuit board containing the relays. To replace the fuse, remove power from the
system and remove the control from its wiring base. Using an appropriate tool, remove the defective fuse and
discard. Install a Fireye replacement fuse (P/N 23-197). Re-install the BurnerLogix control in accordance with the
installation procedure detailed in a previous section.
The YB230 control contains a non-replaceable fuse and must be returned to the manufacturer for repair or
replacement.
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