OPERATIONAL CODES

*Please refer to digital control panel diagram.

• FLO—No water flow detected. Code message will appear any time the
  circulation pump is off, or when the heat pump is not receiving correct water flow
• OFF—System is off. System is off until temperature set point is raised above 60°F
• CFI—Celsius / Fahrenheit Selection
• ULC—User Lock Code. When activated, step to the next menu level: ELC
• ELC—Enter Lock Code. Allows end user to select a secret code so only
  authorized persons can change heat pump settings
• CFO—Call Flex Options. When activated, steps to the next menu level: CFS
• CFS—Call or Flex selection. Allows user to choose between call or flex options
• FS—Heater in defrost mode. Normal function in lower air temperatures.
  Fan continues to run and compressor is off. Compressor will restart when air coil temperature rises to approximately 38°F