Navien NP-180, Service Manual

Page: 34 / 179

©N
avien
Am
eri
c
a
I
n
c
. 20
1
0
NR/NP
series servi
c
e Manua
l
3
2
Versi
o
n 2.0
Outlet Thermistor
>= 208 ȕ
Outlet Thermistor
>= 14
ȕ
Outlet Thermistor
>= 248 ȕ
PUMP Abnormal?
Mixing Valve Abnormal?
Cascade Connection
Abnormal?
Control Board
Abnormal?
High-Limit-Switch 1
Open?
Inlet Thermistor 1
>= 14 ȕ
Inlet Thermistor 2
>= 14
ȕ
Inlet Thermistor 2
>= 248 ȕ
Outlet Thermistor 2
>= 14
ȕ
Outlet Thermistor 2
>= 248 ȕ
Thermistor Connection
Abnormal?
High-Limit-Switch 2
Open?
Lock-out:
001E
Lock-out
Lock-out:
007E
Lock-out:
008E
Lock-out:
015E
Lock-out:
016E
Lock-out:
021E
Lock-out:
022E
Lock-out:
030E
Lock-out:
032E
Lock-out:
033E
Lock-out:
041E
Lock-out:
038E
Lock-out:
045E
Lock-out:
043E
Lock-out:
042E
Lock-out:
044E
B
B
Power ON
YES
YES
YES
inlet Thermistor 1
>= 248 ȕ
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
MGV OFF
SGV1 OFF
SGV2 OFF
Watch-dog OFF
Igniter OFF
GV/Igniter Power OFF
Main Power
Reset?