The Lenox control board at chị Oanh's place does not generate the correct voltage to the thermostat. So, we are planning to replace it.

• Model: BCC3 Rev B
• Part 48K98 replaced 35K77 replaced 40L88 replaced 78J61 replaced 68H08 replaced 65K29 replaced 47J76 replaced 45K48 replaced 30H67 replaced LB-90089A replaced LB-63622AA replaced LB-90676A replaced LB-89859 replaced LB-87086A replaced LB-65126A replaced LB-50709BD replaced 40L8801 replaced 35K7701