Haier EK Series, Service Manual

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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
喚
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 prevention:
When the temp.of coil pipe is above 62 ć ,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 ć , 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
ć
and the compressor runs for over 5
minutes. When the temperature of the indoor coil pipe ascends to over 7
ć
, the compressor is restarted
(must meet a 3-minutes delay)
Timer on, Timer off and sleep control are available.
5.1.4 Dehumidifying mode
喚 喚
Temperature control range : 16
ć
—30
ć
Control character:
When Tr (indoor temperature) > Ts (temperature setting) +2
ć
, compressor and outdoor fan motor
run continuosly with indoor fan motor runnig in accordance with the wind speed setting (State 1) .
When Ts
d
Tr
d
Ts +2
ć
, 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 ±1 difference. ć
5.1.5 Heating mode: (cooling only have no the mode)
*Temperature control range : 16
ć
—30
ć
*Temperature control precision: r 1 ć
*Control Character:
When Tr d Ts, compressor, four-ways valve and outdoor fan motor is on, indoor fan motor runs as
in cold blast mode, and 4
ć
of compensation is added after compressor is started.
+68
18HEK03
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