Series 7400 Single Phase 1+N UPS
Corrective Action
When all the indications have been noted, you should refer to the following fault interpretation charts and carry out the actions detailed against any led whose status is abnormal. If you are unsure as to how to undertake the actions detailed - or if several LED indications are abnormal and you are unable to distinguish between the likely cause and affects - then seek immediate assistance from an approved service agent.
Fault Reporting
Irrespective of whether fault rectification is successful or not, report the fault occurrence to the nearest service agent - who will then forward the details to the manufacturer. This type of customer feedback is an important factor in maintaining high product reliability, and also provides important data concerning the equipment field performance.
CAUTION
The following diagnostic charts are designed for ‘first aid’ troubleshooting only. If a problem cannot be resolved by taking the actions given then fully trained assistance should be sought immediately.
Do not under any circumstances make internal circuit adjustments or interfere with the circuit boards in any other way.
Uninterruptible Power System
LS3
LS5
== 
LS1 LS2 LS4 LS6
52
