Navien CH-180 Service manual - page 48
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
46
4.6.14. DHW Flow Sensor
Navien Part No.
Function
Check Point
AASS9EXFS002
D
Failure Event
1. Unable to detect or measure any water flow rate.
2. Water leakage from the water flow sensor.
Effects
Error Code
Diagnostic
Color /
Number of wires
1. Red- black : DC 5 V
2. White – black : DC 0.3 ~ 4.5 V
1. To sensing water flow and GPM (Gallons per minute) for steady hot
water temperature.
1. Ignition sequence does not start.
2. Stop operating once detecting water leakage.
1. Visual inspection: Connection and/or breakage of wires.
2. Voltage check: Check range of voltage shown below.
3. Open/drain and verify that impellor spins freely
©Navien America Inc. 2010
CH series service Manual
Version 1.0
Water Outlet
Water Outlet