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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4.6.14. <strong>Water</strong> Adjustment Valve<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 />
AAVC9EXFC003 Check Point N, D<br />
1. To control the water flow for maintain steady hot water temperature.<br />
1. <strong>Water</strong> leakage from the automatic water adjustment valve.<br />
2. The valve cannot modulate or make open/close positions.<br />
1. Stop operating once detecting water leakage.<br />
2. No flames.<br />
3. No operation of the unit.<br />
4. Temperature fluctuations in the hot water outlet.<br />
E034<br />
1. Visual inspection: Connection and/or breakage of wires.<br />
Clean the Domestic cold water inlet filter.<br />
2. Voltage check: Check range of voltage shown below.<br />
Feedback (D) : Red – black : DC 7 ~ 13 V<br />
White – black : Pulse<br />
<strong>Water</strong> Adjust (CW)(N) : Blue – yellow : ON AC 97~138 V, OFF 0 V<br />
<strong>Water</strong> Adjust (CCW)(N) : Blue –orange : ON AC 97~138 V, OFF 0 V<br />
Feedback<br />
Flow adjust<br />
©<strong>Navien</strong> America Inc. 2010<br />
56<br />
NR/<strong>NP</strong> series service <strong>Manual</strong><br />
Version 2.0
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