Ingersoll-Rand ENL 5 Vario, Instructions For Installation And Operation Manual

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12. TROubLEShOOTING AND FAuLT ELImINATION
Symptoms Possible reasons measures
No LED lights up
Supply voltage incorrect
Circuit board defective
Check voltage on the type plate
Check the connections and the supply
voltage
Check the circuit boards for possible
damage
All LEDs are continuously
on
Failure during the start of the program
Circuit board defective
Separate the device from the supply
voltage and reactivate after > 5 s
Check the circuit boards for possible
damage.
Test button pressed,
but no condensate
discharge
Feed pipe and/or discharge pipe
blocked or obstructed
Wear and tear
Circuit board defective
Service unit defective
Minimum pressure not reached
Maximum pressure exceeded
Check feed and discharge pipe
Check whether or not the valve opens
audibly (press the test button several
times for > 2 seconds)
Check the circuit board for possible
damage
Check the operating pressure
Condensate discharge
only when the test but-
ton is pressed
Feed pipe without sufficient slope
Cross section not large enough
Condensate accumulation too high
(surge)
Service unit extremely dirty
Install feed pipe with a slope
Replace the service unit
Device blows off con-
tinuously
Service unit defective or dirty Replace the service unit