35Error - Navien NP-180 Service Manual

5.19. 35Error

Error occurrence conditions and check items.
Error
Check the gas pressure sensor. If an error (Open: 0.1±0.1 V or lower / Short-circuit:
35E
4.5±0.2 V or higher) is detected, or if the gas pressure (+) or (-) hose is pulled out,
Gas pres
the system displays 35E (cleared automatically) on the remote controller and the
sure sensor
error
PCB.
1. Measure the gas pressure sensor output voltage.
2. Check the connector. (defective contact or short-circuit caused due to moisture)
Check items
3. Check the gas pressure hose.
During gas valve ON, is the
output voltage of GPS normal?
During gas valve OFF, is the
output voltage of GPS normal?
Check connector
©Navien America Inc. 2010
Description
No
Check the voltage between black and white wire of
CN 7: 0.2 - 0.6VDC
Yes
No
Check the voltage between black and white wire of
CN 7: 1 - 4VDC
Yes
107
NR/NP series service Manual
Replace GPS
Replace GPS
Version 2.0