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9. Fault finding
WARNING:
Before fault finding read the Safety information in Section 1 and the General
wiring notes in Section 5.1.
Please note that there are hazardous voltages present and only suitably
qualified personnel should carry out fault finding.
The product must be isolated from the mains supply before touching any of
the wiring terminals.
Safety may be compromised if the fault finding procedures are not carried
out in line with this manual.
Relay fuses to be replaced by manufacturer or accredited service department.
During installation or maintenance, the rear of the product MUST be protected
from environmental pollutants entering the product. Alternatively, the tasks
can be performed in a dry clean environment.
9.1 Introduction
The most likely time for faults to occur is during installation and commissioning. The most
common fault is incorrect wiring. If after applying power to the product an error message is
displayed, it may be necessary to fault find. To simplify and aid in this process, the product
has a Test menu (see Sections 2.8 and 6.4.1).
There are six viewable input channels. This will prove whether or not the product is functioning
correctly.
9.2 System faults
Symptom Action
1
Display not
illuminating
1. Switch off the mains supply to the product.
2. Check all wiring is correct.
3. Check external fuse(s) are intact. Replace if necessary.
4. Check the mains voltage is within specification.
5. Switch on mains supply.
If symptoms are still present return product for examination.
Consider the likelihood that the product has been damaged from
mains borne surges / spikes. Consider installing an additional ac
power line protector between the product and the mains supply.
The protector needs to be positioned close to the product to gain
full protection.
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