19
TROUBLESHOOTING
Safety thermostat in electric heating surface
If a fault occurs in the built-in electric heating surface, the
safety thermostat will switch off the unit. The electric
heating surface is equipped with a fire thermostat, which
automatically shuts off the power if the temperature
exceeds 40°C. When the temperature drops, the heating
surface automatically switches back on.
As an extra safety feature, there is a built-in thermal fuse
which triggers disconnection if the temperature exceeds
60°C.
Reconnection must be executed manually via the red button
indicated in the pictures below.
System not running
• Fuse in electric panel has blown, no voltage in the
system.
• One of the fuses in the system’s control board has blown.
• Loose wire, no voltage to the unit.
• Incorrectly set weekly program.
• Filter timer has switched off the system.
No supply air
• Defective supply air fan.
• Clogged supply air filter.
• Outdoor air grille clogged with dirt and leaves in the
autumn, or snow and ice in the winter.
• Fuse on control board has blown.
• Unit is defrosting (supply air fan runs at reduced speed)
• Incorrect setting of Optima controls
No exhaust air
• Defective exhaust fan.
• Clogged exhaust filter.
• Fuse on control board has blown.
Cold supply air
Fault
• Heat exchanger is clogged.
• Exhaust fan is defective.
• Exhaust filter is clogged.
• The electric post-heating surface has been switched off
at the overheating thermostat (only systems with
electric reheater installed).
• Air in heating pipe, defective thermostat/motor valve,
incorrect setting of control panel.
If none of the above errors are relevant, contact:
• During the warranty period (0-2 years), the installer from
whom the unit was purchased.
• After the warranty period (2 years ->), the installer from
whom the unit was purchased or the Genvex Customer
Centre by calling 7353 2700.
Please have the data from the type plate ready (silver plate
on the unit).
Alerts
See Optima 270 operating instructions.
No
.
Item no
.
Description
12
071008
Rotary exchanger Ø375x200
13
071009
Brush TF 4.8x14 4P BK 2TFBK
14
071010
Brush strip
15
071011
Vertical gasket – rotor
16
071012
Peripheral gasket – rotor
17
071017
Wire gasket, rotor cassette
18
071021
Drive belt Ø6
19
071022
24V motor
20
071023
Pulley wheel
21
071025
Converter 230V – 24V DC
22
071069
Vibration damper Ø20x10 M6
Left-hand system
Right-hand system
