Navien NP Condensing Tankless Gas Water Heater - Service Manual
Navien NP Condensing Tankless Gas Water Heater - Service Manual
Navien NP Condensing Tankless Gas Water Heater - Service Manual
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5.19. 35Error<br />
Error occurrence conditions and check items.<br />
Error<br />
35E<br />
<strong>Gas</strong> pres<br />
sure sensor<br />
error<br />
Description<br />
Check the gas pressure sensor. If an error (Open: 0.1±0.1 V or lower / Short-circuit:<br />
4.5±0.2 V or higher) is detected, or if the gas pressure (+) or (-) hose is pulled out,<br />
the system displays 35E (cleared automatically) on the remote controller and the<br />
PCB.<br />
Check items<br />
1. Measure the gas pressure sensor output voltage.<br />
2. Check the connector. (defective contact or short-circuit caused due to moisture)<br />
3. Check the gas pressure hose.<br />
During gas valve ON, is the<br />
output voltage of GPS normal?<br />
No<br />
Replace GPS<br />
Yes<br />
Check the voltage between black and white wire of<br />
CN 7: 0.2 - 0.6VDC<br />
During gas valve OFF, is the<br />
output voltage of GPS normal?<br />
No<br />
Replace GPS<br />
Yes<br />
Check the voltage between black and white wire of<br />
CN 7: 1 - 4VDC<br />
Check connector<br />
©<strong>Navien</strong> America Inc. 2010<br />
107<br />
NR/<strong>NP</strong> series service <strong>Manual</strong><br />
Version 2.0
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