16
TROUBLESHOOTING
Safety thermostat in electric heating surface
(accessory)
The built-in electric heating surface supplied by Genvex
as an accessory contains a safety thermostat which
automatically switches off the electric heating surface if
the ambient temperature exceeds 90°C.
When the temperature drops, the heating surface
automatically switches back on.
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.
• The exhaust fan is defective.
• The exhaust air filter is clogged.
• The electric post-heating surface is switched off on the
overheating thermostat (only systems with electric
heating surface 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.
