22
Troubleshooting Guide - Advance Split Ducted Unit
Doc. 9590-2015-03 Ver. 3 221111
Troubleshooting Guide
Advance Split Ducted Unit
Fault Code
Description
Possible Causes
Remedies
E09 LP Switch
Tripped
Low Pressure Control will cut out the system
(i.e. stop the compressor and fans) if a pressure
less than 165kPa is detected. Compressor
stops for 5 minutes for the 1st and 2nd trip. If
the low pressure switch trips out three times
in a row, then the unit will remain off for 15
minutes before attempting to re-start. For the
system to restart after a Low Pressure cut out,
the pressure switch needs to detect a pressure
greater than 330kPa.
Insufficient airflow over
indoor coil during cooling
operation
Check indoor fan operation
to ensure sufficient airflow
is flowing across the indoor
coil.
Undercharged with
refrigerant
Check for refrigerant leaks
and repair.
Insufficient airflow over
outdoor coil during heating
operation
Check for dirty outdoor coil
and inspect outdoor fan
operation.
Blockage in refrigeration
system
Remove blockage from
refrigeration system.
Dirty filter
Clean Filter.
E10 LP Sensor
Error (open/short
circuit)
The reading of the suction pressure transducer
is not within the specified sensor range.
Faulty wiring or defective
transducer.
Replace the transducer.
Correct the wiring.
E11 HP Switch
Tripped
High Pressure Control will cut out the system
(i.e. stop the compressor and fans) if a pressure
greater than 4502kPa is detected. Compressor
stops for 5 minutes for the 1st and 2nd trip. If the
high pressure switch trips out three times in a
row, then the unit will remain off for 15 minutes
before attempting to re-start. For the system
to restart after a High Pressure cut out, the
pressure switch needs to detect a pressure less
than 3509kPa.
Insufficient airflow over
indoor coil during heating
operation
Check indoor fan operation
to ensure sufficient airflow
is flowing across the indoor
coil
Overcharged with
refrigerant
Check for refrigerant leaks
and repair.
Insufficient airflow over
outdoor coil during cooling
operation
Check for dirty outdoor coil
and inspect outdoor fan
operation
Blockage in refrigeration
system
Remove blockage from
refrigeration system
Dirty filter
Clean Filter
E12 HP Sensor
Error (open/
short)
The reading of the condenser pressure
transmitter is not within the specified sensor
range.
Faulty wiring or defective
transducer.
Replace the transducer.
Correct the wiring
E13 VSD Fault
Signal
E13 will be displayed on the ODB when the VSD
sends a fault signal to the ODB.
VSD overheating.
Ensure proper airflow/
cooling over the drives heat-
sink.
Incorrect supply voltage
Ensure line voltage is > 187
VAC. Check system for lose
connections or hot joints.
VSD HP loop open circuit
Ensure that the drives HP
bypass in connected.
E15
Communication
Error Between
ODU to VSD
No communication data received for 20
seconds.
Check modbus
communication cable
connection.
Make the communication
cable connection correct.
Power cycle the drive.
