Three Times - L.B. White TS080 Owner's Manual And Instructions

Is Air-
Proving Switch

Three Times

Stuck Open or
Shorted? (Perform
Indicates Lack of
Continuity
Air Proving in Fan Check.)
Section of Unit.
Is Fan Wheel
Binding?
Is Fan Wheel
Loose On Motor
Shaft?
Proper Voltage
Supplied to Fan
Motor?
Proper Voltage
Being Supplied to
Motor
Relay?
Check Wiring and Electrical
Connections to Motor Relay.
Repair or Replace as Necessary.
Is Air Proving
Switch Arm
Binding?
Yes
No
Replace Air-Proving
No
Switch Assembly.
Yes
Repair or Replace
No
Yes Tighten Fan Wheel Set Screw(s) to
Flats of Motor Shaft.
No
Is
Defective Motor or Capacitor.
Yes
Replace Motor or Capacitor.
No
Is
Is
Ignition Control
Yes
Module Sending 24
Volts to Motor
Relay?
No No
Yes
Repair.
Yes
Replace Motor Relay.
Check Wiring Between Control
Module and Motor Relay. Repair
as Necessary. If Wiring is Good,
Replace Ignition control Module.