Appendix
0020188110_03 recoVAIR Installation and maintenance instructions
23
Symptom
Possible cause
Measure
Bypass summer mode does not
work
The bypass motor is connected
incorrectly
1.
Check the plug connection to the bypass motor.
2.
Check the temperature sensor.
Bypass motor is defective
▶
Replace the bypass motor.
Incorrect flap position
▶
Check the flap position.
The temperature sensor is posi-
tioned incorrectly
▶
Check the positioning of the temperature sensor.
Noises in the condensate drain
pipework
Condensate siphon connected
incorrectly
▶
Connect the condensate siphon correctly.
Water drips out of the product
Exhaust-air lines not insulated
to ensure that they are vapour-
diffusion-tight
▶
Insulate the exhaust-air lines so that they are vapour-diffusion-
tight.
Supply-air lines not insulated
to ensure that they are vapour-
diffusion-tight
▶
Insulate the supply-air lines so that they are vapour-diffusion-
tight.
The supply air is too cold
Supply-air and exhaust-air flows
are not balanced
▶
Adjust the product.
Incorrect flap position
▶
Check the flap position.
Bypass motor is defective
▶
Replace the bypass motor.
System components (e.g. heat
exchanger, fan) are dirty
▶
Clean dirty system components.
Frost protection active (mains
voltage present)
1.
Check whether
S.815
is displayed in the
Live Monitor
.
2.
Wait until the outside temperature increases (the product
automatically switches on no later than 60 minutes after the
temperature increases.).
–
Outside temperature: >
−
3
℃
Bad and/or unpleasant odours
present
Openings for the supply-air and
exhaust-air lines are too close
to each other
▶
Increase the distances between the openings for the supply-air
and exhaust-air lines.
Noise transmission between the
rooms
No T supersonic damper in-
stalled
1.
Install T supersonic dampers.
2.
Adjust the product.
Planned air volume flow not
available after installation
Installation is not vapour-diffu-
sion-tight
▶
Check that all of the connections are leak-tight.
Noises after replacing the fan
Fan installed incorrectly
▶
Check the fan's installation location.
E
Check programmes
–
Overview
Prüfprogramme
Meaning
P.01 Bypass test
The bypass flap is actuated and moved to the closed and open position. In the event of a negative
test result,
Test not OK
is shown in the display. Then check that the bypass is connected correctly
and works correctly. If required, replace/clean components.
P.02 Test Frost prot. element
A defined volume flow is created by the ventilation unit and the frost protection element is switched
on. In the event of a negative test result,
Test not OK
is shown in the display. Check that the frost
protection element is connected correctly and works correctly. If required, replace components.
P.03 Initialisation measure
The ventilation unit runs through four ventilation levels, one after the other. The rotational speeds of
the ventilation levels are used as characteristic lines for monitoring the system efficiency. The check
programme must always be run through before the system efficiency function can be activated in the
configuration menu.
P.04 System efficiency test
The prerequisite is that check programme
P.03
has been executed once previously. To check the
system efficiency, four volume flows are created by the ventilation unit.
