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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4.6.9. APS<br />
<strong>Navien</strong> Part No.<br />
Function<br />
Failure Event<br />
Effects<br />
Error Code<br />
Diagnostic<br />
Color /<br />
Number of wires<br />
NASS9EX00009 Check Point E<br />
1. Sensing the air-pressure for air velocity following gas supply.<br />
2. APS device automatically controls the quantity of air supply operate with GPS.<br />
1. The combustion noise occurs.<br />
2. Imperfect and/or lifting Flame occurs.<br />
1. The water heater is not operating.<br />
2. Excess carbon monoxide emissions.<br />
E009, E010, E027<br />
1. Visual inspection: Connection and/or breakage of wires.<br />
2. Voltage check: Check range of voltage shown below.<br />
1. Red- black : DC 5 V<br />
2. White – black : DC 0.3 ~ 4.5 V<br />
©<strong>Navien</strong> America Inc. 2010<br />
51<br />
NR/<strong>NP</strong> series service <strong>Manual</strong><br />
Version 2.0