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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B<br />
Lock-out<br />
Outlet Thermistor<br />
>= 208<br />
YES<br />
Lock-out:<br />
001E<br />
MGV OFF<br />
NO<br />
Outlet Thermistor<br />
>= 14<br />
NO<br />
YES<br />
Lock-out:<br />
007E<br />
SGV1 OFF<br />
SGV2 OFF<br />
Outlet Thermistor<br />
>= 248<br />
YES<br />
Lock-out:<br />
008E<br />
Watch-dog OFF<br />
NO<br />
NO<br />
Control Board<br />
Abnormal?<br />
YES<br />
Lock-out:<br />
015E<br />
Igniter OFF<br />
NO<br />
High-Limit-Switch 1<br />
Open?<br />
NO<br />
YES<br />
Lock-out:<br />
016E<br />
GV/Igniter Power OFF<br />
B<br />
Inlet Thermistor 1<br />
>= 14<br />
NO<br />
YES<br />
Lock-out:<br />
021E<br />
Main Power<br />
Reset?<br />
inlet Thermistor 1<br />
>= 248<br />
YES<br />
Lock-out:<br />
022E<br />
YES<br />
Power ON<br />
NO<br />
High-Limit-Switch 2<br />
Open?<br />
YES<br />
Lock-out:<br />
030E<br />
NO<br />
Inlet Thermistor 2<br />
>= 14<br />
YES<br />
Lock-out:<br />
032E<br />
PUMP Abnormal?<br />
YES<br />
Lock-out:<br />
038E<br />
NO<br />
NO<br />
Inlet Thermistor 2<br />
>= 248<br />
YES<br />
Lock-out:<br />
033E<br />
Mixing Valve Abnormal?<br />
YES<br />
Lock-out:<br />
045E<br />
NO<br />
NO<br />
Outlet Thermistor 2<br />
>= 14<br />
YES<br />
Lock-out:<br />
041E<br />
Cascade Connection<br />
Abnormal?<br />
YES<br />
Lock-out:<br />
043E<br />
NO<br />
Outlet Thermistor 2<br />
>= 248<br />
YES<br />
Lock-out:<br />
042E<br />
NO<br />
Thermistor Connection<br />
Abnormal?<br />
NO<br />
YES<br />
Lock-out:<br />
044E<br />
©<strong>Navien</strong> America Inc. 2010<br />
32<br />
NR/<strong>NP</strong> series service <strong>Manual</strong><br />
Version 2.0
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