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5. For codes 9812 and below, remove the two
solenoid leads from the solenoid PC board and
disconnect the purge switch leads. See Figure
F.31. Also, remove plug J2 from the control
board.
6. Remove the gas hose from the gas solenoid
nipple. Remove the brass fitting connected to
the gas solenoid valve from the outside of the
case. See Figure F.31.
7. Remove the two screws mounting the gas
solenoid and assembly bracket to the case.
Carefully remove the assembly.
8. Remove the two screws mounting the gas
solenoid valve to the assembly bracket. Remove
the gas solenoid valve.
9. Remove the two screws mounting the solenoid
PC board to the assembly bracket. Remove the
solenoid PC board.
10. Install the replacement solenoid PC board onto
the assembly bracket and secure with the two
mounting screws.
11. Install the replacement gas solenoid valve onto
the assembly bracket and secure with the two
mounting screws.
12. Install the gas solenoid assembly bracket into
the case and secure with the two mounting
screws.
13. Install the gas hose onto the gas solenoid
nipple. Install the brass fitting into the solenoid
valve from the outside of the case.
14. For codes 10148 thru 10500
, install plug J11
onto the solenoid PC board. Connect the leads
to the gas solenoid valve and purge switch.
15. For codes 9812 and below, install the two leads
from the gas solenoid valve onto the solenoid
PC board and connect the purge switch leads.
Also, install plug J2 onto the control board.
16. Install the control box cover and secure by
installing the three screws previously removed.
17. Install the wire reel and retaining collar and
close the case door.
TROUBLESHOOTING AND REPAIR
F-46
F-46
LN-25™
GAS SOLENOID VALVE AND/OR SOLENOID PC BOARD (IF
PRESENT) REPLACEMENT (continued)
FIGURE F.31. – GAS SOLENOID ASSEMBLY FOR EARLIER CODES.
BRASS
FITTING
GAS SOLENOID
ASSEMBLY
MOUNTING
SCREW
GAS SOLENOID
VALVE MOUNTING
SCREW
SOLENOID
PC BOARD
PC BOARD
MOUNTING
SCREW
GAS SOLENOID
ASSEMBLY BRACKET
GAS HOSE
GAS SOLENOID
NIPPLE
GAS SOLENOID
VALVE
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