Airwell YCV280, Installation And Maintenance Instructions Manual

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H. Set EEV open angle by hand
When being switched off, short connect CN27 to open the valve fully compulsorily for 2 minutes;
When being switched off, short connect CN29 to close the valve fully compulsorily for 2 minutes.
I. Anti-freezed protection
In cooling mode, execute the anti-freezed protection due to the measured indoor coil temp. to avoid
the indoor heat exchanger causeing frost or ice.
J. Other functions
a. Swing motor control
Indoor will control swing motor ON/OFF due to the swing signal from wired controller.
b. Auxiliary electric heater control
In heating mode, if the below conditions can be met, the electric heater will work:
(1) Indoor fan motor and compressor are running;
(4) Unit stops or quit the heating mode.
c. Filter cleaning
Check and memorize the running time of indoor fan motor, once arriving the requested time (set
by SW07-6), indoor will send filter cleaning signal to wired controller; when indoor recieves the filter
reset signal from wired controller, if the time exceeds the requested time, the filter will reset.
d. Compulsory defrosting: after indoor receives the compulsory defrosting signal from wired controller,
it will send compulsory defrosting signal to outdoor contineously for 10 times. In the sending period,
indoor will execute the normal defrost.
e. Trial operation
Set the mode as cooling (heating), press ON/OFF for 5 seconds to enter compulsory cooling (heating).
In compulsory cooling, display "LL" and COOL will flash;
In compulsory heating, display "HH" and HEAT will flash, fan speed is AUTO.
At this time, only ON/OFF, TEMP +/- are valid.
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