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Maxi 1100-2000
Operation- and maintenance instructions
204414
Systemair AB
2
3
Troubleshooting
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
A.)
Check if there are any alarm messages.
B.)
Check the settings in the control panel (times, week schedule, auto, manual operating etc.).
C.)
Check that the fuses are not defect.
2. Reduced airflow
A.)
Check the settings of Medium and Low fan speed.
B.)
Check that the Outdoor/Exhaust air damper, if used, opens.
C.)
Change of filters required?
D.)
Cleaning of diffusers/louvers required?
E.)
Cleaning of fans/exchanger block required?
F.)
Is roof unit/air intake clogged?
G.)
Duct system. Check visible duct runs for damage and/or build-up of dust/pollution.
H.)
Check diffuser/louver openings.
3. Cold supply air
A.)
Check control temperature on the control panel.
B.)
Check if overheating thermostat is alert. If necessary, reset by pressing the red button, marked
RESET (pos.24 in fig.3 and pos.23 in fig.4).
C.)
Check if the extract filter must be changed.
D.)
Check that the By-pass damper is closed. By-pass damper is standard in MAXI 1100 and
accessory to MAXI 2000.
E.)
Check if the fan thermo contact has tripped, shows as
Malf. SAF or EAF
in the control panel. If
necessary, reset it (see page 6
Alarms).
4. Noise/vibrations
A.)
Clean fan impellers.
Service
Before calling your service representative, make a note of the specification and production number from
the data plate.
