York YHKMXH009BARX-FX Service Manual page 260

Operation
Timing setting
OFF timing: when a set time has elapsed, the unit stops running.
ON timing: when a set time has elapsed, the unit starts.
parts of wired controller explanation :
1.The unit starts or stops at the setting time. Meanwhile, it displays the timing time.
2."ON Timing, OFF timing and circulation"means that the unit is on and off at the setting time everyday.
Note
The shorter setting time will be carried out firstly.
If the ON timing and OFF timing are the same, the setting is invalid.
Even in timing condition, you may start or close the unit through pressing "ON/OFF" switch.
1.Press "TIMER" switch.
1.Press "TIMER" switch.
The display changes with the following sequence:
on
ON OFF
OFF
2.Set up "TIMER"
When timing ON or timing OFF flickers, press " " or " " to
regulate the time
Press" "or " "set up ON/OFF time.
The setting time increases ten minutes each time you press " "
switch.
The setting time decreases ten minutes each time you press" "
switch.
When setting timing ON and timing OFF at the same time,
press "timing" switch to change the setting item.
3.Time setting is achieved. Press"setting"switch.
Cancel timing
If you want to change the timing mode to normal operation,
press "timing" until there is no timing display. When the
timing is invalid, the mode is in normal operation.
258
Press "ON/OFF" switch firstly,
and set up operation mode.
Please regulate the clock in
advance before using the
timing function.
on
no display
OFF CYCLE