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The Subzero ‘MEGA CHILL’ is a controller that integrates all the control functions required by a chiller. It is a complete, independent, rugged and highly reliable unit. It is one of the most efficient chiller controller of it’s kind in the country with the kind of features it provides.
A user friendly LCD screen displays all parameters and message alarms on the display. In addition to the LCD there are LED’s provided for instant status of all controls in the system. The Mega Chill controller allows you to manage refrigeration units having different configurations.
The parameters are protected with a hardware key known as ”PROKEY”. Without prokey user cannot change parameters, but can view the parameters. Thus prevent’s any unauthorized access to the parameters.
It protects compressor & other devices by Switching them OFF incase of respective faults. For example it trips the compressor on HP fault and not switching it on till the fault persists.

Main Features

7 segment LED display & LCD with backlight to display all parameters and control status.


Audible alarm with LCD message for all faults


HP/LP/OL/OSS trip protection for compressor.


Overload trip protection for pump and condenser.


Regulates water level via water solenoid valve.

Input & Output

Analog Inputs : 6 NTC probes for CONTROL, E/INLET, E/OUTLET, C/INLET, C/OUTLET, AFT.


Digital Inputs : HP, LP, OSS, AFT, Comp O/L, Pump O/L, CCH, Cond. O/L, SSP, CWFS, EWFS, Bitzer comp O/L, R, Y, B, Medium Water Level, Low Water Level.


Relay Outputs : Pump, Compressor, Condenser Fan, Alarm, Water Solenoid Valve, Bitzer Comp Reset, Liquid SV.


Temperature range -30°C to 50°C(resolution: 0.5°C).


230VAC Standard. 110VAC on request.


Panel cutout : 167 X 124 MM for Display Board.


Overall size : 150 X243 MM for Input/Output Board.