Fault Causes - Helios ELS EC Série Notice De Montage Et D'utilisation

Installation and Operating Instructions
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DANGER
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DANGER
Fan unit ELS EC..
8.2 Servicing and maintenance
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The safety instructions specified in section 1.2 must be observed!
The fan must be fully isolated from the power supply before all work and before opening the terminal compart-
ment!
– There is no provision for maintenance beyond the scope of user maintenance. If maintenance work is still
required (due to faults), then this must be carried out by electricians!
– Excessive deposits of dirt, dust, grease, etc. on the impeller, motor, protection guard and, above all, between the
casing and the impeller, are not permitted, as these can lead to an unbalance in the impeller, overheating of the
motor or the blocking of the impeller. In such cases, the unit must be cleaned.
– In cases of longer periods of standstill, maintenance must be carried out when the unit is restarted.
The following should be checked:
• Secure mounting of the fan in casing, replace in case of doubt.
• Remove dirt deposits.
• In case of mechanical damage, replace damaged parts or decommission the unit (the fan unit can only be replaced
as a whole).
• Check tightness of screw connections, do not loosen screws in the process!
• Casing quality (cracks, brittleness of the plastic)
• Free movement of the impeller. If the impeller does not move freely, see Fault causes in section 8.3!
• Bearing noises
• Vibrations – see Fault causes in section 8.3
• Check power consumption according to type plate – see Fault causes in section 8.3
8.3

Fault causes

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The safety instructions specified in section 1.2 must be observed!
– General fault causes
See sections 7.2, 7.3, 8 for function-specific faults.
Fault
Fan does not start
Fuse has tripped
Vibrations
Abnormal noises
Fan no longer perfor-
ming (speed)
There is an LED on the electronics board. The LED shows codes according to the operating situation. These can be
used by service technicians for analysis. The facade must remain mounted. It is possible to see through the grille to the
on the white control unit cover by removing the filter. The green LED on the left side slightly shines through the cover
and it can be recognised easily in environments that are not too bright.
Everything is in order:
Upon connection to the mains power supply, the LED will light up constantly for 5 sec. (standby situation), then shortly
every 6 sec.
Rapid flashing of the LED after a required or sensor requirement signals the start-up time.
Then at intervals in operation:
1x flashes = Operation at stage 1 (required)
2x flashes = Operation at stage2 (required)
3x flashes = Operation at stage 3 (required)
4x flashes = Operation sensor-dependent
Fault:
No flashing = Check mains voltage
5x flashes or more signals a technical problem.
Disconnect fan from mains power supply via the in-line fuse for approx. 1 min. and reconnect. Should the fault reoccur,
contact the Helios customer service team.
In case of a known problem, such as e.g. a blocked impeller, the control unit will attempt 3 start-ups. If the problem
continues, the control unit will be locked for 12 hrs. Then begin the process from the beginning.
Cause
– No voltage
– Impeller blocked
– Motor blocked
– Shorted coil in motor
– Supply line/connection damaged or
defective control board.
– Connected incorrectly
– Contamination
– Attachment-related resonance
– Grinding impeller
– Bearing damage
– Mechanical damage
– Filter contaminated/clogged
– Insufficient air delivery
– Incorrect voltage
– Bearing damage
– Contamination
– Insufficient backflow
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Solution
Check mains voltage
Check connection according to wiring diagram
Clear blockage (facade screws too long), clean,
replace fan unit if necessary
Replace fan unit
Replace fan unit
Replace parts, replace fan unit if necessary
(contact Helios customer service team)
Check, modify connection
Clean
Check or repair attachment
Clean impeller, replace fan unit if necessary
Replace fan unit
Carry out maintenance
Check/clean/replace filter
Check/clear inflow and outflow
Check/modify connection
Replace fan unit
Clean
Widen backflow openings
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