83521 User Guide

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Problem:

No heating/cooling system activation

Solution:

1. Verify MODE switch is in proper heat or cool mode.

2. Check baeries. Replace if necessary. (See “Replacing the Baeries,” page 31).

3. Check set temperature. Set temperature should read above room temperature in heat

mode and below room temperature in cool mode.

4. Verify Heating/Cooling power switch isn’t oﬀ.

5. Verify that the circuit breaker isn’t tripped.

6. Verify that the furnace door is closed securely.

7. Check for loose or crossed wiring in the thermostat wiring terminal.

8. Verify that copper wires are not exposed and touching other wires.

9. Verify that the O/B jumper is installed appropriately. (See “Set Heat Pump Jumper” page

12).

10. Verify that the FAN jumper is installed appropriately.

(See “Set Fan Control Jumper” page 13).

TROUBLESHOOTING

Problem:

No fan/fan runs continuously

Solution:

1. If the fan runs continuously, verify that the thermostat is in the AUTO position not the ON

position.

2. Let the thermostat sit (do not touch) for 30 minutes to allow the temperature to stabilize.

3. Verify that the G wire in the thermostat wiring terminal is connected properly.