Haier HDU-28CF03, HDU-18HF03 For Preparation of HeatingHot Keep, When heating is started

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For Preparation of Heating("Hot Keep")

"HOT KEEP"is operated in the following cases.

When heating is started:

In order to prevent blowing out of cool wind, the indoor unit fan stopped according to the room temperature which heating operation is started. Wait for approx. 2 to 3 minute, and the operation will be automatically changed to the ordinary heating mode.

Defrosting operation (in the heating mode):

When it is liable to frost. the heating operation is stopped automatically for 5 to 12 minutes once per approx. one hour, and defrosting is operated. After defrosting is completed, operation mode is automatically changed to ordinary heating operation.

When the room thermostat is actuated:

When room temperature increases and room temperature controller actu- ates, the fan speed is automatically changed to stop under low temperature condition of indoor heat exchanger. When room temperature decreases, air conditioner automatically changes over to ordinary heating operation.

WARMING OPERATION

Heat pump type warming

With the heat pump type warming, the mechanism of heat pump that concentrate heat of outdoor air with the help of refrigerant to warm the indoor space, is utilized.

Defrosting operation

When a room is warmed with a heat pump type air conditioner, frost accumulates on the heat ex- changer of outdoor unit along with the drop of indoor temperature. Since the accumulated frost re- duces the effect of warming, it is necessery to automatically switch the operation to the defrosting mode. During the defrosting operation, heating operation is interrupted.

Atmospheric temperature and warming capacity

Warming capacity of heat pump type air conditioner decreases along with the drop of outdoor temperature.

When the warming capacity is not sufficient, it is recommended to use another

heating implement.

Period of warm-upSince the heat pump type air conditioner employs a method to circulate warm winds to warm the entire space of a room, it takes time before the room tem- perature rises.

It is recommendable to start the operation a little earlier in a very cold morning.

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Contents Duct Type AIR Conditioner Table of Contents Disposal of the old air conditioner Safety Precautions Make sure the system is groundedDo not wash the air conditioner with water Rated Maximum Minimum Indoor CoolingOutdoor Heating IndoorParts and Functions Power ON/OFF Parts and Functions OperationCool Fan operation Auto RUN, COOL,HEAT and DRY operation 1After unit start, select your desired operation mode 2TIMER mode selection3Timer setting 4Confirming your settingPress Timer button to change Timer mode 3Time setting for Timer onTime confirming for Timer on 5Time setting for Timer OFFCooling, dehumidifying mode Heating mode This series changeover switch is set 1. on 2.OFF 3.OFF 4.OFF Malfunction Unit fails to startMalfunction Followings are not malfunction Care and Malntenance Points to observeWhen heating is started For Preparation of HeatingHot KeepIs The Unit Installed Correctly Installation placeInstallation Manual For Wire Controller Install wire controllerIndoor unit wiring Installation Manual For Indoor Unit Safety precautionsIndoor unit Installation Manual For Indoor Unit Sketch map of long duct Thermal insulation of duct Installation of air sending ductInstallation of air return duct Foundation bolt Hose RequirementsPipe and insulation material Connection of refrigerant pipe Allowable pipe length and drop Pipe material and sizeSupplementary refrigerant Gas leakage detection Vacuum pumpingOpen all valves Electric wiring Haier Group