Navien CH-180 Service manual - page 93
Other manuals for CH-180:
Owner's Operation Manual, User's Operation Manual, Installation Manual, Operation Manual, Installation Manual
Manual is about: Combination Water Heater
/ Heating Boiler
of
155
91
Check method
Error type
Cause
Check method
Error
type
Check if the thermistor is open and if the connec-
tor is connected properly.
If the same phenomenon, replace the thermistor.
If the trouble continues despite the checking of above
items, replace the PCB.
MΩ
Open
Defective
sensor
Other
trouble
Defective
thermistor
Thermistor
Defective
PCB
©Navien America Inc. 2010
CH series service Manual
Version 1.0