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This unit has many features. The servicer must be familiar with these features in order to properly
service the unit.
Compressor Restart Delay
This feature extends the overall life of compressor by preventing the short-cycling of the air conditioner.
When the compressor restarts, the unit is designed to give a minimum of three minutes delay to
equalize the refrigerant pressures and optimize the cycling of unit.
Memory
The unit has a memory system .If power is lost, all the control settings (mode, fan speed, on/off and
Configuration) are saved. When power is restored, the unit starts in the same mode (and configuration)
it was in before the power was lost.
Automatic Evaporator Freeze Protection
To keep the evaporator from freezing, this feature activates automatically in which the compressor is
turned off and the indoor fan is turned on when the evaporator temperature gets too low.
Automatic Quick Warm-up (for heat pump models only)
If the room temperature falls to 4.5 C/8 F below the set point temperature, the reverse cycle heat is
shut off and the electric strip heat is turned on for one cycle, until the set heat is attained.
LED Indicators and Buttons
The touch pad has buttons for MODE, FAN, POWER, SETPOINT UP and SETPOINT DOWN.
It also has LEDs that correspond to the mode, fan speed, power and set point operation, to indicate the
unit s status. LEDs for HIGH, MED and LOW indicate the fan speed that is selected.
LEDs for FAN, COOL and HEAT indicate what operating mode is active. LED for POWER is the unit
ON/OFF status LED. If the unit is in ON mode, the LED will be green. If the unit is OFF, the LED will be off.
Unit Configuration
NOTE: HEAT mode is for Cooling & Heating models only.
High Temperature Protection in Heating
Operation
The compressor and (or) electric heater will be switched off to prevent damage in high indoor blow air
temperature or error indoor temperature sensor.