Navien NP-180 Service Manual page 34

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