Navien CH-180, Service Manual, Page: 40 / 155

38
4.6.6. Fan motor
Navien Part No.
Function
Check Point NAFA9GSFB002 L
Failure Event
Effects
Error Code
E009, E010, E027
Diagnostic
Color /
Number of wires
1. Black-Red : DC 127 ~ 184 V
2. Black-Yellow : DC 15 V
3. Black-Orange : DC 0~7.5 V
4. Black-White : 0 ~ 6,500 RPM
To provide combustion air into the burner and to exhaust flue gas.
Fan operated with APS or ideal combustion.
1. Fan speed failure: the fan RPM are less than or equal to 400 RPM.
2. The fan assembly screw loosens and/or the fan is disassembled.
3. Connection terminal assembly defectiveness.
1. Unstable combustion condition.
2. Unit vibrating and making a noise.
3. The boiler is not operating.
1. Visual inspection: check the fan connection wire and/or the fan mounting
location.
2. Voltage check: Check range of voltage shown below.
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© Navien Ameri c a I n c . 20 1 0 CH series servi c e Manua l Version 1 .0