DIAGNOSIS: The heat differential temperature is set too low. The system satisfies the setpoint too quickly, causing frequent starts and stops.
FIX: Increase the heat differential temperature. This is the allowable drop below the setpoint before the system turns on.
- Navigate to MAIN MENU > SETTINGS > INSTALLATION SETTINGS > THRESHOLDS.
- Select HEAT DIFFERENTIAL TEMP.
- Change the value to a higher number (e.g., 1.5°F or 2°F instead of 0.5°F).
IF THAT DIDN'T WORK: Check your staging configuration. If you have a multi-stage system, ensure the first stage is configured to handle the base load for longer run times. Improper staging can also cause short cycles.
HEADS UP: Increasing the differential improves equipment efficiency and reduces wear from frequent startups. The trade-off is a slightly wider temperature swing in your home.