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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4.6.6. Fan motor<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 />
NAFA9GSFB002 Check Point L<br />
To provide combustion air into the burner and to exhaust flue gas.<br />
Fan operated with APS or ideal combustion.<br />
1. Fan speed failure: the fan RPM are less than or equal to 400 RPM.<br />
2. The fan assembly screw loosens and/or the fan is disassembled.<br />
3. Connection terminal assembly defectiveness.<br />
1. Unstable combustion condition.<br />
2. Unit vibrating and making a noise.<br />
3. The water heater is not operating.<br />
E009, E010, E027<br />
1. Visual inspection: check the fan connection wire and/or the fan mounting<br />
location.<br />
2. Voltage check: Check range of voltage shown below.<br />
1. Black-Red : DC 127 ~ 184 V<br />
2. Black-Yellow : DC 15 V<br />
3. Black-Orange : DC 0~7.5 V<br />
4. Black-White : 0 ~ 6,500 RPM<br />
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©<strong>Navien</strong> America Inc. 2010<br />
48<br />
NR/<strong>NP</strong> series service <strong>Manual</strong><br />
Version 2.0
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