York Pyrenees YM9FXC030BAA FX Series Service Manual page 21

The indoor fan speed will adjust according to
the value of T1-Ts.
7.4.3.4 Defrosting mode：

Condition of defrosting:

AC will enter
according to the value of temp. of T3 and
the value range of temp. change of T3 and
also the compressor running time.

During the defrosting mode, the
compressor keep running, indoor and
outdoor motor will stop, defrost lamp of
the indoor unit will be lighted "
be displayed.
7.4.3.5 High evaporator
protection:
Compressor off
Outdoor fan motor off
7.4.4 Auto-mode
This mode can be chosen with remote
controller.
In auto mode, the machine will choose
operation mode according to ΔT (ΔT =T1-Ts).
T1-Ts
Cooling
Fan only
Heating*
Heating*: For cooling only models, they will run
at fan speed
the defrosting mode
." Will
coil temp.T2
Compressor and outdoor
fan motor off
Compressor and outdoor
fan motor on
AC will run in auto mode in the below cases:
（1）
Pressing the forced auto button.
（2）
If AC is off, it will run in auto mode
when the timer on function is active.
（3）
After setting the mode, AC will run in
auto mode if the compressor keeps not running
for 20 minutes.
7.4.5 Drying mode
8.4.5.1 The compressor is cycled running with
10 minutes on and then 5 minutes off. The
indoor fan will keep running at low speed.
8.4.5.2 In drying mode, if room temperature is
lower than 10℃, the compressor will stop and
not resume until room temperature exceeds
13℃.
8.4.5.3 The evaporator anti-freezing protection
is the same as that in cooling mode.
7.4.6 Forced operation function
Forced cooling mode:
The compressor and outdoor fan keep running
and the indoor fan runs at low speed. After
running for 30 minutes, AC will turn to auto
mode with 24℃ setting temperature.
Forced auto mode:
The action of forced auto mode is the same as
normal auto mode
temperature.
When AC receives signals, such as switch on,
switch off, timer on, timer off, mode setting, fan
speed setting, sleeping mode setting, follow me
setting, it will quit the forced operation.
7.4.7 Auto-Restart function
The indoor unit is equipped with auto-restart
function, which is carried out through an
auto-restart module. In case of a sudden power
failure, the module memorizes the setting
conditions before the power failure. The unit will
resume the previous operation setting (not
including swing function) automatically after 3
minutes when power returns.
If the memorization condition is forced cooling
mode, the unit will run in cooling mode for 30
minutes and turn to auto mode as 24℃ setting
with 24℃ setting