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
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
5.6. 08Error<br />
Error occurrence conditions and check items.<br />
Error<br />
Description<br />
08E<br />
Short-circuit<br />
of hot water<br />
temperature<br />
sensor<br />
Check the hot water temperature sensor.<br />
If a problem (short-circuit: 248or higher) is detected for 3 seconds,<br />
the system displays the error message 08E on the remote controller and the PCB.<br />
(Hot water output temperature sensor)<br />
Check items<br />
1. Check if the hot water temperature sensor connector is wet due to any reason,<br />
including leakage.<br />
2. Replace the defective hot water temperature sensor.<br />
3. Replace the PCB.<br />
Is the hot water thermistor<br />
normal?<br />
No<br />
Replace hot water thermistor<br />
Yes<br />
Resistance between two red wires of CN 13 is from<br />
0.8 to 20k ohm at normal condition.<br />
Check connector<br />
Caution: B efore measuring resistance of the<br />
thermistor, remove the connector from the PCB<br />
©<strong>Navien</strong> America Inc. 2010<br />
79<br />
NR/<strong>NP</strong> series service <strong>Manual</strong><br />
Version 2.0