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CONTROL PANEL TROUBLESHOOTING AND REMEDY
Fault
Remedy
Power supply if on, the control
panel does not operate.
• Check the correct contact connection.
• Make sure the button On/Off on the control panel display is operable.
• Check the stub line from the executive element to the control panel for integrity.
LCD faulty operation
• The back cover is horizontally pressed during the mounting. Release one or two fixing screws.
The display glows but displays no
information.
• Contact service centre.
Incorrect temperature display.
• Perform calibration of the control panel temperature sensor.
CONTROL SYSTEM OPERATION DESCRIPTION
The electronic automatic control and operation unit is integrated into the ventilation unit.
AUTOMATIC CONTROL SYSTEM FUNCTIONS
1.
1. Turning Unit On/Off.
2.
2. Keeping supply air temperature at set point.
3.
3. Bypass damper actuating.
4.
4. Heat exchanger freezing protection.
5.
5. Fan operation and control.
6.
6. Actuating air dampers.
7.
7. System shutdown on signal from the fire alarm panel.
8.
8. Heater control. Heater freezing and overheating control.
9.
9. Control of the compressor and condensing unit of the DX cooler by the thermostat in the control panel (applicable only for the
units with cooler connection possibility).
10.
10. Fan activation after power failure. The function is activated and set in the controller menu.
CONTROLLER FUNCTIONS
Digital controller is the basic component of the automatic control system. Matching of the controller and the ventilation unit is given in
the table below.
Controller
Freemax Mini
Freemax MX
VUT 600 PW EC
VUT 800 WH
VUT 1000 PW EC
VUT 1000 WH
VUT 2000 PW EC
VUT 1500 WH
VUT 3000 PW EC
VUT 2000 WH
VUT 350 PE EC
PA 01 W
VUT 600 PE EC
PA 02 W
VUT 1000 PE EC
PA 03 W
VUT 2000 PE EC
PA 04 W
VUT 3000 PE EC
PA 01 E
VUT 300 WH EC
PA 02 E
VUT 400 WH EC
PA 03 E
VUT 600 WH EC
MPA 800 W
VUT R 900 WH EC
MPA 1200 W
VUT R 900 EH EC
MPA 1800 W
VUT R 1500 EH EC
MPA 2500 W
MPA 3200 W
MPA 3500 W
MPA 5000 W
Summary of Contents for MPA 1200 W
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