If necessary, set the water temperature as follows:
n
Press the set point display key
to display the
unit set point on the display.
n
Change the unit set point using the
key to
increase or the
key to decrease the
temperature.
The unit set point is factory set to 12°C for warm weather
operation and 45 °C for cold weather operation
(YCAA-H).
n
Press the
key to start the unit in the cooling
mode or the
key to start unit in the heating mode
(YCAA-H).
The
LED or the
LED will go on.
Compressor operation will be indicated by
LED's for
each circuit.
6.3
Water Temperature Display
To display the evaporator inlet water temperature press
the
key.
To display the evaporator outlet water temperature
press the
key.
6.4
Operating Mode Change (YCAA-H units)
Return the unit to stand-by:
n
By pressing the
key if the unit is operating in the
cooling mode or pressing the
key if the unit is
operating in the heat pump mode.
n
Press the
key to start the unit in the cooling
mode or the
key to start unit in the heating
mode.
6.5
Alarm Display and Reset
Alarms are indicated by the associated panel LED's and
by messages on the display. Details of the alarm codes
are given below.
In case of an alarm display, contact an Authorised York
Service Centre.
6.6
Unit Shutdown
To shutdown the unit proceed as follows:
n
Press the
or the
key (YCAA-H) to return the
unit to stand-by.
n
De-activate the two circuits by pressing the
key
for each circuit.
n
Turn master isolating switch to OFF position to
de-energise the unit.
(09/03)
035B09012-100 Rev. 4
6
-
3
SET
+
-
IN
OUT
Sensor (ST1) Failure Inlet Water
Temperature Sensor
Sensor (ST2) Failure Outlet Water
Temperature Sensor (Circuit 1)
Sensor (ST3) Failure Defrost
Temperature Sensor (Cicuit 1)
Sensor (ST4) Failure Outlet Water
Temperature Sensor (Circuit 2)
Sensor (ST5) Failure Defrost
Temperature Sensor (Cicuit 2)
Sensor (ST6) Failure Outside Air
Temperature Sensor
E07 Fan Overload Circuit 1
E08 Fan Overload Circuit 2
E05
E06
E01
E02
E03
E04
Summary of Contents for YCAA B 120
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