Vallox 096 MV Instructions For Use, Maintenance And Installation Manual

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Vallox 096 MV Instructions For Use, Maintenance And Installation Manual Manual pdf 41 page image

41© Vallox • We reserve the right to make changes without prior noticeMAINTENANCE INSTRUCTIONSMAINTENANCEFAULT CAUSE DO THISThe user interface shows thetext:Extract fan stopThe extract air fan has stopped. Make sure that the fan has stopped. The fan wiringand operation must be checked and, if necessary,the fan must be replaced. Contact the service centre.The user interface shows thetext:Supply fan stoppedThe supply air fan has stopped. Make sure that the fan has stopped. The fan wiringand operation must be checked and, if necessary,the fan must be replaced. Contact the service centre.The user interface shows thetext:Cell frozenThe heat recovery cell is toofrozen. Use the control panel to carry out a manual defrost(Service menu > Cell defrost). Try to figure out why theheat recovery cell is frozen.The user interface shows thetext:Temperature sensor 1/2/3/4/5The temperature sensor, asindicated by the user interface, isdamaged.The sensor mounting must be checked and, ifnecessary, the sensor must be replaced. Contact theservice centre.The user interface shows thetext:External sensorThe external temperature sensor isdamaged. The sensor mounting must be checked and, ifnecessary, the sensor must be replaced. Contact theservice centre.The user interface shows thetext:PostheaterThe post-heater does not heat. The heater mounting must be checked and, ifnecessary, the heater must be replaced. Contact theservice centre.The user interface shows thetext:Bus faultProblems in the data transfer bus. Make sure that the Modbus bus is connected correctlyand that the devices connected to the Modbus busare functioning properly.The ventilation unit is notworking, the control panel isnot working.The 230 VAC power is lost. Check:• The fuses in the equipment room• The ventilation unit power supply fuses• The ventilation unit motherboard fuseThe ventilation unit is working,the control panel is notworking.The control panel 24 VDC poweris lost or the control panel isdamaged.Check the wiring between the unit and the controlpanel. Contact the service centre, if necessary.CONDENSED WATERIn the heating season, the extract air humidity condenses towater. Water formation may be abundant in new buildings, or ifthe ventilation is low, compared to the humidity production ofresidents. Condensed water must be able to get out of the unitwithout obstruction. Check in conjunction with maintenance,for example, during the autumn before the heating seasonbegins, that the condensing water outlet at the bottom pool isnot clogged and that there is no leakage. You can check it bypouring a little water into the pool. Clean, if necessary. Check thecondensing water outlet location in section Mounting.TROUBLESHOOTINGThe table below contains troubleshooting and fault repairinstructions.NOTEThere may be some water in thecondensed water pool, at thebottom of the unit. This is normal,and requires no actions from you.WARNINGWater must not be allowed to enterthe electrical system.