TROUBLESHOOTING GUIDE
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Symptom | Possible Cause | Action |
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Display will not | Thermostat is not | Check if the thermostat is mounted and |
come on. | being powered. | latched on the wallplateÐmount and latch the |
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| thermostat on the wallplate. |
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| Check if the circuit breaker is trippedÐreset |
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| the circuit breaker. |
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| Check if the fuse is blownÐreplace the fuse. |
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| Check if the system switch is in the Off |
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| positionÐset to Heat or Cool. |
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Temperature | The upper or lower | Check that the temperature setpoints are |
settings will not | temperature limits | within range: |
change (Example: | were reached. | Heating: 50° to 99° F (10° to 37° C) |
cannot set the |
| Cooling: 50° to 99° F (10° to 37° C). |
heating higher or the |
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cooling lower). |
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| (Contiuned) |
| Pub. No. |
21 |
