31
3 System Operation
At fuel oil flames: decrease flame scanner intensity (see Appendix)
B1 Motor does not move
Check whether "OPEN" and "CLOSE" relays pull on when the switch (4) is operated.
If not:
Make sure that there is no fault (recognisable at the fault LED)
Check F2 fuse (on power supply front panel)
Check FMS relay-module connection
If so:
Check whether "OPEN" and "CLOSE"
signals are present on motor
Check fuse on relay-module
Check voltage supply circuit of the motor
B3
Fault 151,
191...195, 201...205
The control element may not have reached its set-point value rapidly enough. Possible espe-
cially on control elements that are activated separately and then have to run their full travel
(e.g. re-circulation damper or flue gas damper or in the case of flying curve switching).
Increase control speed on motor (if possible)
or
Limit control range by means of limit switch (in order to save running time)
otherwise
Increase parameters for monitoring bands (if admissible)
(possible for level 2 only)
B4
Fault 171...175,
181...185
Although the control element is in the monitoring band it does not reach the dead band.
Increase pulse length for the channel (parameter 730 to parameter 734)
or
limit switch is too close the programmed top or bottom point.
Adjust limit switch
TIP:
After adjusting the limit switch the ETAMATIC must read in the range limits again
B5
Fault 211...215,
221...225
2nd monitoring band fault appears sporadically during operation.
Cause:
Motor is possibly running in wrong direction.
This may happen on capacitor motors if:
- the capacitor is defective
- there is a broken wire in the motor or in the lead
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