VSC OPERATION AND MAINTENANCE INSTRUCTIONS 4 118 0324 2 IOM

33
Topvex FC
Compact Air Handling Unit
Operation and Maintenance Instructions
Document in original language
125918-EN_GB
2015-03-16 A001
Operation and Maintenance Instructions
Systemair AB
6 Troubleshooting
Note:
Should problems occur, please check or correct the following before contacting your service representative.
Always check if there are any alarms active in the control panel.
1. Fan(s) do not start
• Check if there are any alarm messages
• Check that the fuses are not defect (pos.9 gure 2)
• Check the settings in the control panel (times, week schedule, auto/manual operation etc.)
2. Reduced airow
• Check the settings for medium and low fan speed
• Check that the outdoor/exhaust air damper (if used) opens
• Check if lters need changing
• Check if di󰀨users and louvres need cleaning
• Check di󰀨user/louvre openings
• Check if fans and exchanger block need cleaning
• Check if the roof unit or air intake is clogged
• Check ducts for visible damage and/or build up of dust/pollution
3. Cold supply air
• Check the control temperature on the control panel
• Check if the overheating thermostat has tripped. If necessary press the red button, on the electrical heater (pos.11
gure 2).
• Check if the extract lter must be changed
• Check if the fans have stopped due to overheating. If so the thermal contact might have tripped (shows as Fan alarm
in the control panel).
4. Noise/vibrations
• Check that the unit is completely leveled
• Clean the fan impellers
• Check that the screws holding the fans are tightened properly
6.1 Alarms
The alarm button (pos.1, gure 3) opens the alarm queue. When pressing this button active and
non-acknowledged alarms will be displayed in the menu window. The alarm-LED (pos.2, gure 3) is
ashing if there are non-acknowledged alarms and steady if the alarms are still active but have been
acknowledged. If there are multiple alarms, use UP/DOWN to move between them. An alarm can be
acknowledged or blocked by using OK and UP/DOWN. To abort and go back to start menu press cancel
and then press LEFT.
See Commissioning record for an overview of possible alarms