FRÄNKISCHE profi-air 250/360 flex, Инструкция по установке и эксплуатации

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Installation and operating instructions profi-air 250/360 flex
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Fault / problem Possible causes Checkup / measure
Low supply air temperature in
winter
Air volume balance between
supply and extract air is not cor-
rect.
Re-establish the air volume balance. Please remember to
check the filters.
Automatic summer bypass
remains open.
Temperatures are still within the set limits:
n
adjustment of the summer bypass settings, see Section 5.
Summer bypass flap has got
stuck.
Examine the summer bypass module and make the flap mova-
ble again.
Motor of the summer bypass flap
is not working.
Check cables and cable connections.
Replace summer bypass motor.
No or low
air volume
No or false adjustment. See Section 4.2 for adjusting the unit.
Filter dirty. Filter replacement (unit, valves, etc.).
Valves / grills clogged. Clean valves / grills.
Heat exchanger clogged. See Section 7.2.1 for cleaning the heat exchanger.
Heat exchanger frozen-up. Defrost the heat exchanger.
The unit operates in frost protec-
tion mode.
No unit error. The unit operates in frost protection mode. See
Section 6.4.
Wait for warmer outside temperature.
Check the installed defroster heater.
No defroster heating available:
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retrofit on site if required.