Navien CH-180, Service Manual, Page: 122 / 155

© Navien Ameri c a I n c . 20 1 0 CH series servi c e Manua l Version 1 .0
8.2.2. Fuse
1. Turn off the gas supply
2. Turn off the 120V power supply
3. Turn off the water supply
4. Remove the four screws securing
the front panel. Remove front panel.
5. Pull out the PCB. (refer to 8.2.1
PCB)
6. Remove the capsule (A)’s B/C con
nected to the power cable. 7. Pull out the fuse.
8. New fuse into the part C and
assemble B/C.
9. Replace the PCB. (refer to 8.2.1
PCB)
10. Fix the PCB screw from PCB
bracket.
11. Install front panel using 4(four)
screws.
12. Turn on water supply, power
supply, and gas supply.
NOTE
Before remove, press the part B into
part C and put together as removing
the capsule.
Figure 4
Figure 5
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