Haier HSU-22LEA03 Service Manual page 14

wind speed control: (the temperature difference is 1 )
auto: when Tr>=Ts+3 , the wind speed is high;
When Ts+1
When Tr Ts+1 , the wind speed is low.
When temperature sensor is off, the fan motor runs at low speed.
when the wind speed changes from low to high, there is no delay, and when it changes from high to low,
there is a 3-minutes delay before conversion.
Manual operation:When unit is on the wind speed can be set to high, medium, low or automatic as required
(execute instruction 2 seconds later after receiving remote signal)
Compressor control The compressor can't be controlled by temperature sensor within 2 minutes after start
up and can be only restarted at least 3 minutes later after shutdown. There is no 3-minute protection with power on
for the first time (over 3 minutes with power off). The compressor must stands by for 3 minutes before it is
restarted after shut down.
There is no 2-minute limit when changing the temperature setting or shutting down the machine through the
remote controller, and the machine can be shut down immediately.
Avoiding electrical shock: outlet air is available 2 seconds later after startup.
High temperature expiration protection:
(1)High temperature expiration prevention:When the temp.of coil pipe is above 64 ,compressor and outlet
air stop running 10 seconds later, and inlet air runs as the temp. sensor is off. When compressor stands by for 3
minute and the temp. of coil pipe is below 60 , the unit can be started again.
Protection of frost is available (disable in test run or heating mode): In order to prevent the indoor heat
exchanger from freezing (in refrigation or dehumidifying mode), the compressor will be shut off when the
temperature of the indoor coil pipe is or below 0
temperature of the indoor coil pipe ascends to over 7 , the compressor is restarted (must meet a 3-minutes delay)
Timer on, Timer off and sleep control are available.
5.1.4 Dehumidifying mode
Temperature control range : 16
Control character:
When Tr (indoor temperature) > Ts (temperature setting) +2 , compressor and outdoor fan motor run
continuosly with indoor fan motor runnig in accordance with the wind speed setting (State 1) .
When Ts Tr Ts +2 , outlet air from compressor is on for 10 minutes and off for 6 minutes, the indoor
fan motor is off in 3 minutes after shut down of compressor and gives breeze in other time (State 2) .
When Tr < Ts, outlet air from compressor is unavailable, and the indoor fan motor enter breeze mode 3
minutes later after after shut down of compressor (State 3) .
When all the ranges alternate, there is
5.1.5 Heating mode: (cooling only have no the mode)
HSU-22L/HEA03
Tr Ts+3 , the wind speed is medium.
and the compressor runs for over 5 minutes. When the
30
1 difference.
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Functions and control
Domestic air conditioner