Foster QC 11 - Manual (Page 5)

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Controller operating instructions
Display Set Point: Press the SET key whilst in the HOLD Mode will display the set point for 5 seconds.
Modify Set Point: Press and hold the SET key for 2 seconds. The SET point will be displayed and the LED’s
of the first and third digits will blink. To change the value, press the UP key to increase the
value or the DOWN key to decrease. To store the new value either press the SET key or
wait for the controller to return to displaying air temperature.
Manual Defrost: Press and hold the DEFROST/UP key for 2 seconds to initiate a manual defrost.
Starting the cycle: Press and hold the START/STOP key for 3 seconds.
Temporarily Stopping the Cycle:
Press and release the START/STOP key.
The condensing system will stop and the message “Stb” will be displayed.
To restart the cycle press and release the START/STOP key for the cycle to
continue from the point it was interrupted.
Alternatively the cycle will restart automatically after the time set in parameter PAU (see
parameter list on page ).
Stopping the Cycle: Press and hold the START/STOP until the display shows “End”, the buzzer will
sound and the unit will enter the stand by mode.
LED’s and there meanings
A series of LED’s, number 1 to 4, on the front panel are used to indicate certain functions controlled by the
controller. There functions are listed below.
LED Mode Function
1 Illuminated Compressor Enabled
1 Flashing Programming Phase (flashing with LED 2).
1 Flashing Anti Short Cycle Enabled
2 Illuminated Fan/s Enabled
2 Flashing Programming Phase (flashing with LED 1).
2 Flashing Activation Delay Active
3 Illuminated Defrost Active
3 Flashing Drip Time Active
4 Illuminated Freezing Cycle or Hold Mode Active
4 Flashing Instrument Temporarily Stopped
5 Illuminated Alarm Signalling
DOWN SET
DEFROST/ UP START/ STOP
4 3 2 1
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