Installation Procedure | Electric wiring | |
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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.
(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
ModelZmax value
AU60NAIEAA<0.2708OHM
AU48NAIEAA
AU36NAIEAA
AU282AHEAA AU362AIEAA
AU242AGEAA
7. Trouble display
Failure description | Code on wired | Flash times of indoor | |
| controller | receiver board | |
Room temp. sensor abnormal | 01 | Power LED flashes 1 time |
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Indoor coil temp. sensor abnormal | 02 | Power LED flashes 2 times |
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Outdoor temp. sensor abnormal | 4A | Power LED flashes 3 times |
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Outdoor coil temp. sensor abnormal/ | 49 | Power LED flashes 4 times |
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(compressor discharge temp. sensor) |
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48 | Power LED flashes 5 times |
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High / Low pressure abnormal | 53 | Power LED flashes 6 times |
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Communication malfunction between indoor and wired controller | 07 | Power LED flashes 8 times |
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Communication malfunction between indoor and outdoor abnormal | 06 | Power LED flashes 9 times |
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Drainage system malfunction | 08 | Power LED flashes 10 times |
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Alarm of exterior annunciator | 0B | Power LED flashes 11 times |
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Coil gas pipe temp. Sensor abnormal | 03 | Power LED flashes 12 times |
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Temperature protection malfunction | 0D | Power LED flashes 13 times | |
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