45 Evaporator Coil Temperature Too High (Check Alarm)

Thermo King Alarm Code

Description	Corrective Action
Evaporator Coil Temperature Too High (Check Alarm) During Chill or Frozen Mode: Evaporator coil temperature is too high compared to return air temperature under operating conditions. Indicates: Low refrigerant charge. Defective evaporator coil or return air sensor  Incorrect connection or location of evaporator coil or return air sensor	Check for sensor alarm codes. Check evaporator coil and return air sensor connections and locations. Check the refrigerant charge using the “Unit Health Check Procedure” on page 6-5.