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calendar grid

Calendar grid icon — Transitioning to next schedule

Lennox · Appliance Systems

What does calendar grid mean?

This icon indicates that the thermostat is transitioning to the next scheduled setting. This happens at the time designated in your programming.

Common Causes

  • Scheduled time change approaching
  • Thermostat is switching between different program periods

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check your programmed schedule for the upcoming time period.

  2. 2

    Ensure the schedule settings are as desired.

  3. 3

    The transition will occur automatically at the scheduled time.

Browse all codes in this manual (8)
Verified technical data. Last updated: April 2026

Related Faults

0004Error code 0004 — High temperature protectionSchedule hold permanentlySchedule hold permanently — Schedule overridden indefinitelySchedule hold until next periodSchedule hold until next period — Schedule temporarily overridden
Source: Lennox Appliance Systems
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