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| TROUBLESHOOTING | ||
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Symptom |
| Possible Cause |
| Corrective Action |
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No Heat (continued) |
| 5. Heating system requires service or |
| sound. This sound usually indicates the thermostat |
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| thermostat requires replacement. |
| is operating properly. If the thermostat does not |
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| (continued) |
| click, try the reset operation listed above. If the |
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| thermostat does not click after being reset contact |
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| your heating and cooling service person or place of | |||
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| purchase for a replacement. If the thermostat clicks, | |||
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| contact the furnace manufacturer or a service |
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| person to verify the heating is operating correctly. |
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No Cool |
| 1. SYSTEM button not pressed to COOL. |
| Press SYSTEM button to COOL and lower setpoint | |||
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| below room temperature. |
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| 2. Loose connection to thermostat or |
| Verify thermostat and system wires are securely |
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| system. |
| attached. |
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| 3. Cooling system requires service or |
| Same procedure as diagnostic for No Heat condition | |||
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| thermostat requires replacement. |
| except set the thermostat to COOL and lower the |
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| setpoint below the room temperature. There may be | |||
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| up to a five minute delay before the thermostat clicks | |||
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| in Cooling. |
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Heat, Cool or Fan |
| 1. Possible short in wiring. |
| Check each wire connection to verify they are not |
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Runs Constantly |
| 2. Possible short in thermostat. |
| shorted or touching together. No bare wire should |
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| 3. Possible short in heat/cool/fan |
| stick out from under terminal screws. Try resetting |
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| system. |
| the thermostat as described above. If the condition |
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| 4. FAN Switch set to Fan On. |
| persists the manufacturer of your system or service | |||
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| person can instruct you on how to test the Heat/Cool | |||
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| system for correct operation. If the system operates | |||
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| correctly, replace the thermostat. |
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Furnace |
| 1. The location of the thermostat and/or |
| Digital thermostats normally provide precise tem- |
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(Air Conditioner) |
| the size of the Heating System may |
| perature control and may cycle faster than some |
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Cycles Too Fast |
| be influencing the cycle rate. |
| older mechanical models. A faster cycle rate means | |||
or Too Slow (narrow or |
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| the unit turns on and off more frequently but runs for | |||
wide temperature swing) |
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| a shorter time so there is no increase in energy use. | |||
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| If you would like to increase the cycle time, choose |
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| SL for slow cycle in the menu, step 4. If an accept- |
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| able cycle rate is not achieved as received or by |
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| choosing slow cycle, contact a local service person | |||
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| for additional suggestions. |
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Thermostat Setting & |
| 1. Thermostat thermometer setting |
| The thermometer can be adjusted +/- 4 degrees. |
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Thermostat Thermometer |
| requires adjustment. |
| See Temperature Display Adjustment in the Configu- | |||
Disagree |
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| ration Menu section. |
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Blank Display and/or |
| 1. Voltage spike or static discharge. |
| Use the Reset Operation at top of previous page. |
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Keypad Not Responding |
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Heat Setpoint will |
| 1. The desired setpoint conflicts with the |
| Change system mode to COOL. Raise the Cool |
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not Respond to the |
| setpoint of the COOL mode. |
| setpoint. Return to HEAT mode and set desired |
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Temperature Up Key |
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| temperature. |
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Cool Setpoint will |
| 1. The desired setpoint conflicts with the |
| Change system mode to HEAT. Lower the Heat |
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not Respond to the |
| setpoint of the HEAT mode. |
| setpoint. Return to COOL mode and set desired |
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Temperature Down Key |
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| temperature. |
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Forgot Keypad |
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| CAUTION: This resets the thermostat to factory |
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Lockout Code |
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| default settings of the configuration menu. After |
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| performing this reset, the thermostat will require |
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| configuration again. Be sure that you know the |
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| required configuration settings before resetting. |
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| With the thermostat in any mode, press | and | at | |
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| the same time to enter the configuration menu at the | |||
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| point where the lockout code is to be entered. Press | |||
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11
