AP UC1200, Руководство пользователя

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11.10 ELECTRONIC CIRCUIT ANOMALOUS SIGNALS
In some cases signals such as the following may occur:
- the display goes off momentarily,
- the letter ‘P’ on the display goes on,
- the letter ‘N’ on the display goes on.
The first case is the automatic circuit protection tripping when ionisation voltage has been discharged to the
earth. In this case, it is necessary to check that the pre-filter is properly fitted in its seat and that it does not
oscillate when the machine is working.
The other two cases are due to activation of particular test programs due to the simultaneous pressure of
two buttons on the control panel of the circuit. To eliminate this activation, first disconnect the power plug
and wait 5-10 seconds before putting it back in.
If the electronic circuit is damaged, fault signals of the following kind may occur:
- more than one of the filter efficiency Leds go on at the same time
- fan runs without any speed indication on the display
- no fan speed variation or fan fails to run
- the ALARM and MAINTENANCE Leds go on with indication of the operating speed without the
filter cell being inserted.
In these cases you must call the nearest service centre.
Feb . 12
Automatikprodukter