The heat coil disconnects the
configured value (90°C) exceeded.
• One the fuses the circuit board has blown.
Change filter:
- The filters must changed.
• water the water trap.
- Cable between display and circuit board long.
• The outlet not adequately protected against ice.
Cold air supply:
Error:
• Counter current heat exchanger blocked snow
and ice.
• There wire loose between the device and the
control panel.
• Blocked filter. The heating coil
can only reactivated with the reset button located on
the terminal box when the temperature below 90°C.
• Discharge grill/roof cover blocked snow and ice
in winter.
Error:
• The fuse the terminal board has blown and there
is power the device.
2) Safety thermostat electric heatsurface
(auxiliary equipment):
The safety thermostat protects the electric heat-surface
against high temperatures during heat production.
The safety thermostat fitted the electric heatsurface’s
terminal box. (Only devices with water after-heat fitted).
• Blocked filter.
Stopped circulation pump, air heating pipe,
defective thermostat/motor-operated valve, incorrect
configuration control panel.
• The extraction fan defective.11Subject Technical Modifications Energy and 3/GES Energy 1
Fault finding
1) The display shows Optima 250 DESIGN:
Data error:
- No communication between the display and controller.
.
• Electric after-heat surface disconnected from safety
thermostat (only device with electric heat-surface
fitted)
• circulation hot water the water after-heat
surface.
Condensation water leaking from the device:
Error:
• Condensation outlet blocked dirt.
- The unit has stoppedthermostat/motor valve, incorrect
setting control panel.
4) Error air side
No air supply the rooms:
Error:
• Defective fan.
Version error:
- If the program the display section does not suit the
controller.
• The fuse the control system circuit board has
blown.
If the error not one those listed above, please
contact your installer the GENVEX customer centre.
3) The device not running
The device stops:
No light the control panel, even when you press on
the button.
• Fresh air grill blocked with dirt and leaves the
autumn snow and ice the winter.
• The condensation outlet blocked ice.
• There loose wire and power the device.
• The extraction filter blocked.
No air extraction from wet rooms:
Error:
• Defective fan.
• The fuse the control system circuit board has
blown.
Hold ON-OFF:
- The filters have not been changed within the last days
