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Electric wiring
6. Test run
CAUTION
THIS UNIT WILL BE STARTED INSTANTLY WITHOUT "ON" OPERATION
WHEN ELECTRIC POWER IS SUPPLIED.BE SURE TO EXECUTE "OFF"
OPERATION BEFORE ELECTRIC POWER IS DISCONNECTED FOR
SERVICING.
This unit has a function of automatic restart system after recovering power stoppage.
Installation Procedure
Failure description
Room temp. sensor abnormal
Indoor coil temp. sensor abnormal
Outdoor coil temp. sensor abnormal/
(compressor discharge temp. sensor)
Over-current malfunction/ power supply abnormal
Communication malfunction between indoor and wired controller
Communication malfunction between indoor and outdoor abnormal
Coil gas pipe temp. Sensor abnormal
Code on wired Flash times of indoor
controller receiver board
01 Power LED flashes 1 time
02 Power LED flashes 2 times
4A Power LED flashes 3 times
49 Power LED flashes 4 times
48 Power LED flashes 5 times
53 Power LED flashes 6 times
07 Power LED flashes 8 times
06 Power LED flashes 9 times
03 Power LED flashes 12 times
Outdoor temp. sensor abnormal
High / Low pressure abnormal
Temperature protection malfunction
0D Power LED flashes 13 times
Drainage system malfunction
08 Power LED flashes 10 times
0B Power LED flashes 11 times
Alarm of exterior annunciator
7. Trouble display
(1) Before starting test run (for all Heat pump models)
Confirm whether the power source breaker (main switch) of the unit has been
turned on for over 12 hrs to energize the crankcase heater in advance of operation.
(2) Test run
Run the unit continuously for about 30 minutes, and check the following.
Suction pressure at check joint of service valve for gas pipe.
Discharge pressure at check joint on the compressor discharge pipe.
Temperature difference between return air and supply air for indoor unit.
The following consults are according to the EMC testing.
Through poor conditions of the electrical MAINS, shortly voltage drops can
appear when starting the EQUIPMENT. This can influence other equipment
(eg. Blinking of a lamp ). But if the Mains-Impedance Zmax value can meet
the below chart, such disturbances are not expected. (In case of need, you may
contact your local supply authority for further information ).
Model Zmax value
AU60NAIEAA <0.2708OHM
AU48NAIEAA
AU282AHEAA AU362AIEAA
<0.2984OHM
<0.0741OHM
AU242AGEAA
<0.2721OHM
AU36NAIEAA
<0.2830OHM