22
| Disturbances and troubleshooting
Air handling unit does not heat or
heats insufficiently
Air in the water heating battery
Venting
To low temperature of the hot water
in the water heating battery
Control the temperature of the heating
medium
To low power of the heating battery
Contact the manufacturer
Heat recovery defect
Contact the manufacturer
Air handling unit does not cool or
cools insufficiently
Air in the water cooling battery
Venting
To high temperature of the cooling
coil
Control the temperature of the cooling
medium
To less flow rate of the cooling
medium
Control the valve. If necessary clean
the valve
To low power of the cooling coil
Contact the manufacturer
Water drops out of the air
handling unit
Damaged or blocked condensation
pipe
Disconnect the unit from the power
outlet. Clean the condensation pipe
incl. syphon
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