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12
M
AINTENANCE
SERVICE / ALARM INDICATION
TROUBLE SHOOTING
Reason
Action
The heat exchanger switch is tuned off.
Switch it on.
Belt of the heat exchanger broken.
Replace the belt.
Belt greasy, causing slippage.
Contact a service representative.
The exhaust fan has stopped.
Contact a service representative.
The exhaust air filter is blocked.
Change the filters.
Exhaust air valve settings incorrect.
Contact a service representative.
Heat insulation of ducts inadequate.
Check the insulation thickness of the supply and ex-
haust air ducts and add insulation if needed.
The after heater over heating protection has gone
off (ECE-models).
Check what the reason to the problem is and reset the
over heating protection.
SUPPLY AIR TOO COLD
REDUCED AIR FLOW
Reason
Action
Filters are blocked.
Change the filters.
Too small a fan speed is selected.
Select higher speed.
Blockage in the fresh air grille.
Clean the outer grille.
Fan wings dirty.
Clean the fans.
RED LED LIGHT
LED is on:
- filter change reminder
LED is flashing:
- supply air temperature after
HRW is below +5°C
- electrical heater overheating
protection went off
- external emergency stop is on
- external alarm is on
works normally
VENTILATION UNIT:
SWITCH OFF THE ALARM:
LED:
ventilation unit main
power switch
exhaust air fan is on speed 1,
supply air fan and HRW are off
ventilation unit is off
exhaust air fan is on speed 1,
supply air fan and HRW are off
ventilation unit is off
automatically, when
temperature is above +5°C
emergency stop switch
fix the externanl alarm /
unit power switch
Содержание greenair LTR-3 EC
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