Nodryne or Westinghouse Pressure Problem

Make: Nordyne or Westinghouse

Model or Series: FG7SC120D-45D

Type: 90% FURNACE

Problem Description: Tripping limit on inducer motor.

Observed Symptoms: Vent pressure drops to 0 when gas fires.

Solution: Replaced inducer motor

Additional Information: 

• Checked gas pressure.
• Disconnected vent and installed short piece of 2" vent to test temporarily.
• Rechecked vent pressure and temperature after inducer was replaced - pressure normal, temperature 136 deg.