Installation and Commissioning Guide
Split Ducted ESP Digital
Installation and Commissioning Guide - Split Ducted ESP Digital Units
Doc. No.0525-077 Ver. 2 200129
39
Fault Possible Causes Remedies
Occasional wishing noise
can be heard on heating
cycle.
This is the sound of the gas changing
directions as de-ice cycle begins.
This is a normal function of an air conditioner.
The unit is removing any ice on the outdoor unit.
The compressor is running
but the system is not
cooling.
You are in heating mode. Check the temperature settings.
The reversing valve has jammed between
heating and cooling.
Replace reversing valve.
The outdoor coil keeps
freezing over.
Outdoor coil sensor might be faulty. See
sensor (temperature/resistance) table
and check resistance value.
Replace faulty sensor.
May have obstruction in outdoor coil. Remove obstructions.
There is only one
condenser fan working.
The fan is faulty. Test the fan motor
for correct voltage, check the motor
winding resistance, open circuit, check
capacitor, etc.
Replace faulty fan. If the fan motor needs
to be replaced and there is no one available
immediately, then just disconnect the fan
electrically and cover the faulty motors fan
guard. This way the unit can still operate at
reduced capacity using 1 fan until you get a
replacement fan motor.
The system is short on
gas. You have fixed the
leak and want the system
to operate at 100% so gas
charge can be corrected.
What can you do to
ensure 100% compressor
operation?
You can adjust your Wall Control
temperature so you have a large
differential. This will operate at the
system at 100% till the temperature gets
to within 4oC of the set point.
Select Cooling or heating mode.
If cooling adjust setpoints more than 4oC lower
than room temp. If Heating adjust setpoints
more than 4oC higher than room temp.
Complete refrigerant charging procedure until
finished.
The indoor unit gives out
odour.
This happens when smell of the room,
furniture, or cigarettes are absorbed into
the unit and discharged with the airflow.
If this happens, we recommend you to run the air
conditioner on cooling for a period of time with
the doors and windows open or have the indoor
unit washed by a technician. Consult the installer
from whom you bought the air conditioner.
Check the drain is not piped into the
sewerage drain line.
Re-pipe drain with a P-Trap and connect into
household drainage or storm water drain.
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