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Service manual
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9.18 Follow me function
Follow me function is chosen through wire jumper J1 in indoor PCB, it’s available when the unit has detected that J1 is on
after getting through the power.
If the indoor PCB receives the signal which results from pressing the FOLLOW ME button on remote controller, the buzzer
will emit a sound and this indicates the follow me function is initiated. But when the indoor PCB receives signal which sent from
remote controller every 3 minutes, the buzzer will not respond. When the unit is running with follow me function, the PCB will
control the unit according to the temperature from follow me signal, and the temperature collection function of room
temperature sensor will be shielded, but the error detective function of room temperature sensor will be still valid.
When the follow me function is available, the PCB will control the unit according to the room temperature from the remote
controller and the setting temperature, and the action of compressor is as following:
At cooling mode, if T
A<
TS, compressor is off; If T
A≥
TS, compressor is on.
At heating mode, if T
A>
TS, compressor is off; If T
A≤
TS, compressor is on.
The PCB will take action to the mode change information from remote controller signal, but it will not affected by the setting
temperature.
When the unit is running with follow me function, if the PCB doesn’t receive any signal from remote controller for 7 minutes
or pressing FOLLOW ME button again, the follow me function will be turned off automatically, and the temperature collection
function of room temperature sensor will be available, the PCB will control the unit according to the room temperature detected
from its own room temperature sensor and setting temperature.
9.19 Outdoor chassis heating cable function (optional)
Heating cable is fixed on outdoor chassis to help deicing and to avoid freezing. The heating cable’s power is 85w, rated
voltage is 220V-240V, and is controlled by a thermostat. If outdoor temperature (sensed by outdoor thermostat) is lower than
5
℃
, the thermostat closed and the heating cable begins to work. If outdoor temperature is higher than 15
℃
, the thermostat
opens and the heating cable will stop working.
Содержание MWVT09S
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Страница 19: ...Service manual 18 MRVT09AS MRVT12AS Outdoor unit ...
Страница 20: ...Service manual 19 MRHVT09AS MRHVT12AS Outdoor unit ...
Страница 21: ...Service manual 20 MRVT18AS MRHVT18AS Outdoor unit ...
Страница 22: ...Service manual 21 MWVT24S MWHVT24S Indoor unit ...
Страница 23: ...Service manual 22 MRVT24AS Outdoor unit ...
Страница 24: ...Service manual 23 MRHVT24AS Outdoor unit ...