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Troubleshooting Guide
If...
Display does not come on.
Temperature display does not go
lower than 45°F (7°C) or higher than
88°F (31°C) during programming.
Temperature change occurs at the
wrong times.
• Set the System switch to Off. Remove batteries. Insert
backward for at least five seconds to reset thermostat.
Correctly replace batteries. Display should come on.
• Make sure batteries are fresh and installed correctly.
• Gently clean battery contacts using a soft pencil eraser.
Do not use anything abrasive on the clips.
• The temperature setting limit is reached. The setting
range is 45 to 88°F (7 to 31°C).
• Check program times for the period in question. Be
sure that AM and PM indications are correct. Make
sure the current day and time are correct. Reprogram,
if necessary.
12
Then...
69-0862—4
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