Haier MRV II AV48NMVERA, Руководство для стартапов

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COOL (including AUTO COOL), DRY, RECOVERY are regarded as the same mode;
HEAT, RECOVERY are as abnormal mode.
F. Fan speed control of indoor fan motor
a. Adjustment by hand
Set high/mid/low fan speed as the request;
b. Auto fan speed
Confirm the fan speed as the temp. difference between room temp. TA and the set temp.
c. Anti-code air control
In heating mode, after compressor startup, the unit will control indoor fan motor state due to the
indoor coil temp.;
In anti-code air period, indoor sends pre-heat signal to wired controller; in outdoor defrosting period,
indoor fan motor will stop, and sends defrost signal to wired controller;
After being switched off in heating mode, indoor fan motor will run at low speed and 30 seconds
later will stop.
3. Indoor unit control
3.1 Indoor PCB
A. Cooling operation
Set temp. in cooling: Ts=set temp. of wired controller;
After startup, indoor unit will send the request to outdoor according to the temp. difference between
the set temp. and the room temp.
B. Heating operation
Set temp. in heating: Ts=set temp. of wired conTA correction value.
After startup, indoor unit will send the request to outdoor according to the temp. difference between
the set temp. and the room temp.
C. Dry operation
room temp.-set temp.
£ 2¡
, indoor operation is identical with the cooling operation, and send the cooling
mode to outdoor;
room temp.-set temp.
¡ 2¡
, indoor will send the dry signal to outdoor, and indoor fan motor will run at
low speed compulsorily when compressor is running; when room temp.
£…16¡
, indoor stops and sends
stop signal to outdoor.
In dry operation, the auto mode of indoor fan motor is identical with the cooling mode; EEV control mode
is identical with the cooling operation.
D. Fan operation
Indoor fan motor will run at the speed set on the wired controller and sends stop signal to outdoor.
E. Abnormal operation
When the requested mode collides with the outdoor mode, the entering earlier will be in prior.
After indoor receives the startup command from wired controller (remote controller), firstly judge the
outdoor current mode. If it is normal mode, the indoor will run as the request of wired controller; if it is
abnormal mode, the command can not be executed, and indoor keeps stop; wired controller displays
standby mode (if in remote control type, the buzzer will sound twice and the remote controller can not
receive the signal). Until the outdoor stops or the outdoor mode is accordant with the requested mode
of wired controller (remote controller), the outdoor will work.