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ActronAir
®
is constantly seeking ways to improve the design of it’s products, therefore specifications are subject to change without notice.
Copyright © 2016 Actron Engineering Pty. Ltd.
CONDITION
PROBABLE CAUSE
RECOMMENDED ACTIONS /
CHECKPOINTS
Unit will not operate
No Power to the unit
No power to the variable
speed drive
Unit under fault condition
Check whether the mains power switch
is ON.
Check whether the Drive Circuit
breakers are switched ON.
Check the Fault details.
Unit will not Cool
or Heat, only Fan
operates
The mode of operation is
“Fan only”.
Indoor condition is equal to
the set point
Set the correct mode of operation.
Try setting the min setpoint for Cooling
16ºC (If cooling required).
Try setting the max setpoint for Heating
28ºC (If heating required)
Unit Cools or Heats,
but will not control
to setpoint
Return air sensor is
defective.
Return air sensor wrongly
calibrated.
Check the Alarm on the Control
Interface.
Need to correct the calibration through
service
Compressor 1 or
2 will not operate,
outdoor fan will
operate
Head pressure high
Discharge pressure sensor
faulty.
Check the Alarm on the Control
Interface.
Compressor 1 or
2 will not operate,
outdoor fan will also
not operate
The mode of operation is
“Fan Only”.
Set the correct mode of operation
Outdoor Motor will
not operate
Motor in fault.
Head pressure not above
the set limit for the fan to
start.
Check the Alarm on the Control
Interface.
Need to correct the setpoint through
service.
Indoor Motor will
not operate
Motor in fault.
Supply air pressure sensor
faulty.
Check the Alarm on the Control
Interface.
Crankcase Heater
will not operate
Heater contactor has failed.
Heater element has failed.
Wiring or terminal failure
Check the Crankcase heater switching
setting through service. Replace heater
element through service.
Check wiring or terminal and replace as
required through service.
TROUBLE SHOOTING GUIDE