York GWH12TB-S3DNA1B/I, Service Manual

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Timer Change
Although timer has been set, the unit still can be turned on/off by pressing ON/OFF button of the remote controller. You can also set
the timer once again, and then the unit will operate according to the last setting.
If timer ON and timer OFF are set at the same time during operation of the unit, the unit will keep operating at current status till OFF
time reaches.
If timer ON and timer OFF are set at the same time at unit OFF, the unit will keep off status till ON time reaches.
Each day in future, the system will operate according to preset mode till OFF time reaches and stop operation till ON time reaches. If
ON time and OFF time are the same, OFF command will prevail.
3.2 Auto Button
If this button is pressed, the unit will operate in AUTO mode and indoor fan will operate at auto speed; meanwhile, the swing motor
operates. Press this button again to turn off the unit.
3.3 Buzzer
Upon energization or availably operating the unit or remote controller, the buzzer will give out a beep.
3.4 Sleep Function
In SLEEP mode, the unit will automatically select appropriate sleep curve to operate according to different temperature setting.
3.5 Turbo Function
This function can be set in cooling or heating mode to quickly cool or heat the room.
3.6 X-FAN Function
3.6.1 When the unit is operating at COOL or DRY mode( it is not available under AUTO, HEAT, FAN modes), the X-FAN function can
be turned on/off. When it is turned on,once pressing ON/OFF button to turn off the unit, indoor fan will continue operation at low speed
for 10 minutes. Within the 10 minutes, horizontal louver will keep its previous status while cold plasma and static dedusting will be
forced to be turned on and other loads will be turned off. Then the complete unit will be turned off; When X-FAN function is set to be off,
once pressing ON./OFF button, the complete unit will be turned on immediately.
3.6.2 During X-FAN operation, press X-FAN button, the indoor fan, horizontal louver, cold plasma and static-dedusting will be turned
off immediately.
3.7 Control of Indoor Fan
Indoor fan can be set by remote control within the range of Mute, Fan speed 1, Fan speed 2, Fan speed 3, Fan speed 4, Fan speed 5
and Turbo and Fan will operate at low, med. high or super high speed accordingly. And also, auto fan speed can be set. Under auto
fan speed mode, indoor fan will automatically select high, med., low or mute speed according to change of ambient temperature.
3.7.1 Under Auto Heat mode or regular Heat mode, auto fan speed will be as follows:
When Tamb.
˘ Tpreset-3 ć , indoor fan will operate at high speed;
When Tpreset-3
ć
≤Tamb.
˘
T 2
ć ˈ
indoor fan will operate at med. speed;
When T 2
ć
≤Tamb.
˘
T 4
ć
, indoor fan will operate at low fan speed;
When Tamb≥T 4 ć ˈ indoor fan will operate at mute.
Control Diagram of Auto Fan Speed under HEAT Mode
3.7.2 Under FAN or COOL mode: if it is auto cooling mode or regular cooling mode, auto fan speed will be as follows:
When Tamb. ≥ T 3
ć , indoor fan will operate at high speed;
When Tpreset ˘ Tamb. ˘ T 3 ć ˈ indoor fan will operate at med. speed;
When Tpreset-2
ć ˘
Tamb.≤Tpreset, indoor fan will operate at low speed;
When Tamb.≤Tpreset-2
ć ˈ
indoor fan will operate at mute;
3.7.3 There is no auto fan speed under DRY mode
Note: Fan speed “High”, “Med.” and “Low” are respectively corresponding to “Fan speed 5”, “Fan speed 3” and “Fan speed 1”. There is
210 seconds delay for fan speed switchover of auto fan.
Tamb.
T4
ć
T2
ć
Tpreset -3
ć
Fan speed
High Med. Low Mute