Navien CH-180, Service Manual, Page: 131 / 155

© Navien Ameri c a I n c . 20 1 0 CH series servi c e Manua l Version 1 .0
8.2.10. GPS
6. Pull out the PCB. (refer to 8.2.1
PCB)
7. Loosen the gas pressure sensor
lowerside 2 screws from base.
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. Remove the gas pressure sensor
connecting housing into the PCB.
9. Replace with new gas pressure
sensor.
10. Assemble the gas pressure sensor
2 tube.
11. Attach the gas pressure sensor and
secured with 2 screws.
12. Replace the PCB. (refer to 8.2.1
PCB)
13. Install front panel using 4(four)
screws.
14. Turn on water supply, power
supply, and gas supply.
NOTE
Always use right type of tube and
right place.
8. Remove the gas pressure sensor 2
tube into the gas pressure sensor.
1 2 9
Figure 26
Figure 28
Figure 27