Unit Control Panel
Item
Function
Displays operating and fault parameters.
SET POINT display key.
SET POINT + key (increases
temperature SET POINT).
SET POINT - key (reduces temperature
SET POINT).
Evaporator manifold inlet water
temperature display key.
Evaporator manifold outlet water
temperature display key.
Circuit 1 or 2 power key and LED
(Select circuit 1 or 2).
Circuit 1 or 2 compressor running LED.
Circuit 1 or 2 high pressure alarm LED.
Indicates that high pressure switch for
circuit 1 or 2 has been activated.
Circuit 1 or 2 low pressure alarm LED.
Indicates that low pressure switch for
circuit 1 or 2 has been activated.
Circuit 1 or 2 anti-freezing alarm LED.
Indicates that water temperature at
evaporator outlet is below the safe limit.
Voltage indicator LED. Indicates that unit
is connected to power supply.
External interlock alarm LED.
Warm weather mode start key and LED.
Starts the unit in the cooling mode. Led
lights up to indicate operating in cooling
mode.
YCAA-H cold weather mode start key
and LED. Starts the unit in the heating
mode. Led lights up to indicate operating
in heating mode.
Remote On/Off Panel
Item
Function
Voltage indicator LED. Indicates that
unit is connected to power supply.
Alarm LED. Indicates that a unit alarm has
been activated.
Warm weather mode start key and LED.
With the unit in stand-by, starts the unit
in the cooling mode. Led lights up to
indicate operating in cooling mode.
YCAA-H cold weather mode start key
and LED. With the unit in stand-by,
starts the unit in the heating mode. Led
lights up to indicate operating in heating
mode.
6.2
Unit Starting
To start the unit proceed as follows:
n
Set the master switch to the on (l) position to
energise the control panel.
Check that
LED (voltage indicator) goes on.
Check that there are no active alarm signals.
n
Activate the two circuits for operation by pressing
the
key for each circuit.
The unit is now in stand-by, the display will come on and
the
LED's for the associated circuits will flash for
approximately 30 seconds before coming on.
(09/03)
6
-
2
035B09012-100 Rev. 4
8 8
8 8
+
-
IN
P
-P
SET
OUT
H 0
2
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