Service manual

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CONTROL
b) The defrosting symbol “H1” will be displayed when the defrosting signal is received from the outdoor unit.
e. AUTO Mode
a) When the ambient temperature is higher than 25
℃
, the unit will run as the COOL mode.
b) For the cooling and heating unit, if the ambient temperature is or lower than2 0
℃
(72
℉
), the unit will run as the
HEAT mode.
c) When the indoor ambient temperature is higher than 20
℃
but lower than 25
℃
, the unit which starts to work under
the AUTO or DRY mode will shift to the FAN mode, while the unit which starts to work under other mode will keep the
current running mode.
f. Mode Conict
When the running modes of the unit which is started just now and unit which has run conict, the former one will
show the error code “E7”.
2.3.3 Other Control
a. Beeper Control
When the controller is powered on or it receives a valid either press button signal or remote control signal, the beeper
will utter a warning tone.
b. Auto Speed Control
Under the HEAT mode
:
If the ambient temperature is equal or higher than the set temperature, the fan will run at the low speed;
If the ambient temperature minus 3
℃
is equal or lower than the set temperature, the fan will run at the medium
speed;
If the ambient temperature minus 3
℃
is lower than the set temperature minus 3
℃
, the fan will run at the high speed.
Under the COOL mode:
If the ambient temperature is equal to or lower than the set temperature, the fan will run at the low speed;
If the ambient temperature is between the set temperature and the set temperature minus 3
℃
, the fan will run at the
medium speed;
If the ambient temperature is higher than the set temperature plus 3
℃
, the fan will run at the high speed.
Under the FAN mode:
The fan will run at the medium speed constantly.
Once the fan starts, its speed can not be changed unit it has run for at least 30 seconds at the currently set speed.
c. AUTO Press Button
The whole unit will run under the AUTO mode by pressing this button when the unit is off. In this condition, the fan
of the indoor unit will run at the auto speed with the swing function activated. When the unit is on, it will be turned off by
pressing this button. This button is unavailable to the oor/ceiling unit.
d. Sleep
a) Under this mode, the proper sleep curve will be adopted in accordance with different set temperatures.
b) Sleep 1
Under the COOL mode or the DRY mode, the temperature will go up by 1
℃
after one hour and by another 1
℃
after
another hour, after that, the temperature will be kept on.
Under the HEAT mode, the temperature will go down by 1
℃
after one hour and by another 1
℃
after another hour,
after that, the temperature will be kept on.
c) Sleep 2
Sleep Curve under the COOL mode
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