210 filter needs to be replaced as it has a buildup of debris and dust on it. Filter was replaced December 4 fall maintenance Performed system maintenance upon service found 2 fault codes on thermostat for Err123.00 HT CFG ERR INDOOR UNIT 12/03/2024. 14:14:04 CFG008.05 IDStgMssMtch Indoor unit 12/03/2024. 14:13:59 Fault 1) Electric heat is configured in thermostat but not the airflow controller AFC and the thermostat has an active call for electric heat Fault 2) There is a mismatch between stages, discovered, and the current stages reporting. This is caused to change and dip switch setting or change in heater bank after IDU is discovered Adjust switch to show current heating options. All faults cleared and unit is running as it should.