PROBLEM PROBABLE CAUSE
SOLUTION
TROUBLE SHOOTING GUIDES
Gas Furnace by Reznor
(Heater Operating) 2. Incorrect manifold pressure 2 Check manifold pressure
or orifices
3. Cycling on limit control 3 Check air throughput
4. Improper thermostat or 4 See thermostat instructions
adjustment
5. Belt slipping on blower 5 Adjust belt tension
Cold Air is Delivered on 1. Fan control heater element 1 Connect as per wiring diagram inside junction box
Start-Up, During improperly wired cover
Operation 2. Defective fan control 2 Replace fan control
3. Incorrect manifold pressure 3 Check manifold and line pressure
Motor Will Not Run 1. Circuit open 1 Check wiring and connections
2. Fan control inoperative 2 Replace fan control
3. Contactor inoperative 3 Replace contactor
4. Defective motor 4 Replace motor
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