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19
When the electric supply is off, flash and display EEL and alarm. When setting do1 is set at “00”, unit
will not alarm when door is open. When setting do1 is set at “0”, once the unit reaches the delay
time, it will flash and display dr alarm. Press any random button to cancel.
If setting C7 is set to “0”, then the units relay does not alarm when power is off.
If setting C8 is set to “0”, then after alarm is canceled, the alarm relay does not close.
If C9 is set to “0”, then after the alarm cancel button is pushed, the buzzer does not restart.
If setting other numbers, then after reaching delay time, buzzer sounds one more time. (Under the
condition of alarm not terminating)
Abnormal work mode
When air sensor is short-circuited or high temperature over limit (＞66℃/151℉), "1H" is displayed;
when air sensor is open-circuited or low temperature over limit (＜－40℃/℉) "1L" is displayed.
Compressor will enter the force running mode, according to C10, C11 set parameters running in
sequence.
When product sensor is short-circuited, open-circuited or over limit (＞66℃/151℉), alternate display
2H and air temperature, the product temperature sensor open-circuited or low temperature over limit
(＜－40℃/℉), alternate display 2L and air temperature.
When the door is open, the light switch can turn the light on and off.
Circuit Diagram
When the door is closed, normal close contact
When the door is open, contact is disconnected
Notes for installation:
1. Sensor leads must be kept separately from the main voltage wires in order to avoid high
frequency noise. Separate the power supply of the loads from the power supply of the controller.
2. The sensor must be placed with the head upward and the wire downward.
3. The temperature controller must not be installed in an area where water drips.
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