Technical Support
Subject
PREDATAIR Error Codes and Symptoms
Document
Version
Department
Revision Details
Revised by
Tech
Engineering
Implemented
EXT-PRED-016
A
Tech
Document Release
SP 18 Aug 2015
DB 18 Aug 2015
N/A
18 Aug 2015
Page
6
of
8
Knowledge Base:
Email:
Toll Free:
OVER TEMP HYD -
Hydraulic oil is
getting too hot and
the compressor is
shutting down.
Insufficient air-flow or
ventilation.
Make sure the cooler is not blocked.
Open door if installed in a cabinet.
Improve ventilation.
Fan not operating.
Check connections. Check fan and relay
Failed temperature probe
or bad wiring connections.
Check the temperature probe and wiring
connections in the hydraulic manifold.
HYD PROBE OPEN
HYD PROBE
SHORT
Failed hydraulic
temperature probe or bad
wiring connection.
Check the temperature probe and wiring
connections in the hydraulic manifold.
COMP PROBE
OPEN COMP
PROBE SHORT
Failed compressor
temperature probe or bad
wiring connection.
Check the temperature probe and wiring
connections.
PRESSURE
SENSOR?
Failed pressure sensor or
bad wiring connection.
Check the pressure sensor and wiring
connections.
CONNECTION ERR
Failed control box, display
box, or bad wiring
connection.
Failed control box, display box, or bad
wiring connection.
BATTERY LOW or;
System runs then
shuts down, and
display resets, but
doesn’t restart
Wires connecting to battery
positive and ground too
small.
Check wire size requirements in the
installation manual and install the correct
gauge wires.
Low battery voltage.
Check wiring connections. Measure
voltage at the input to the PREDATAIR
when it is running with the fan on to
ensure full voltage. Check charging
system.
High oil
consumption
Compressor, hose, fitting,
or cooler oil leak.
Check system for leaks.
Compressor shaft seal
leaking.
Pull off hydraulic motor and check for oil
inside coupling.
Excessive oil in air
line
Excessive oil level.
Check oil level and adjust as needed.
Coalescer filter plugged.
Check and replace as needed.
Scavenge line plugged.
Check scavenge line and fittings.
Water in air system
FRL
(Filter/Regulator/Lubricator)
failure.
Check drain on filter.
Air reservoir not drained
regularly
Drain reservoir.
Excessive water in
compressor oil.
Allow system to completely cool, and
drain water from tank until oil comes out.
Top up oil as per manual.
Air pressure relief
valve opens.
Compressor system
pressure exceeding
200psi.
Check pressure sensor.
