Airedale OnRak 3kW 35kW - Manual (Page 55)

IT Cooling LogiCool
™ OnRak
IT Cooling
55
Technical, Installation and Maintenance Manual :6912497 V1.5.0 02_2013
Troubleshooting
FAULT POSSIBLE CAUSE REMEDY/ACTION
Unit will not start No power Check power supply to the controller.
Wired incorrectly
Check wire connections in accordance with wiring
diagram on control panel.
Loose wires Check all wires, connections, terminals etc.
Fan not operating - power
on Power supply failure Check power supply at circuit breaker.
Wiring to motor
Check voltage at motor terminals.
Motor / fan assembly jammed
Isolate unit and check free rotation of motor/fan
assembly, if faulty
– replace.
Power disconnected to fans. Carefully check status of power disconnect socket.
Status indication LED faulty Wired incorrectly Check that the wiring to the LED has the correct
polarity.
Check that the terminations are correct.
Display faulty Does not illuminate Faulty cable- Replace cable.
Faulty display – Replace display.
Wrong display address Change address of display (see controls section)
No Cooling Low water flow through coil Ensure any chilled water valves are open and not
in bypass.
Ensure that any solenoid valves are open when
there is a demand for cooling.
Water temperature sensor faulty. The sensor has
failed causing the valves on the unit to close.
UPS The UPS system does not operate
correctly Please refer to the UPS documentation / fault
codes. Various solutions are available from
changing battery modules to module restart.
Water Leak Detection Damaged flexible hose Ensure that the flexible hose is not rubbing on the
coil or sheet metal in the vicinity of the door.
Condensation has formed on coil Check operating conditions ensuring that the unit
operates with its dew point control feature.