Service Manual 39
Operation
• Power relay turns on 1 second later after the power is input to the outdoor unit.
• Control sequence : power on ➔ PTC operating ➔ power relay on
■ CT1 control
• If the operating current reaches I1, the operating frequency of the compressor decrease.
• After decreasing the operating frequency by 1step, if operating current is below I1 for 60 seconds continuous-
ly, the operating frequency of compressor increase by 1step.
■ CT2 control
• If the operating current of the appliance reaches I2, the compressor stop instantly and 2 minutes later the
compressor restart again.
• If CT2 occurs 5 times within 1hour, the appliance turn off and display ERROR CODE 7.
❇ I1:Current of operating frequency down
I2: Current of compressor cut off
cf. I1 is set the lowest level between intial value and in case dectection of dc paeak current.
Control table
■ DC Peak Current Error by a fault signal of IPM
• If the operating current of IPM reaches 35A ±3A, the compressor stop instantly.
• If DC PEAK occurs 5 times within 1 hour, the appliance turns off and display ERROR CODE 6.
■ DC Peak Current Error by the compressor lock
• If the DC LINK voltage below DC 140V occurs 5 times within 1 hour while the compressor is operating, the
appliance turns off and display ERROR CODE 6
.
■ DC Peak Current Error by the Outdoor Fan Lock
• If it’s 5 times within 1 hour in case of the temperature of outdoor pipe TH is over 65°C while the compressor is
operating, the appliance turns off and display ERROR CODE 6.
Power relay control
Protection from total current control
Protection from DC Peak Current
1 AS-W096DH0/GH0 5.5 6.5 6 7 9
2 AS-W126DH0/GH0 6.5 7.5 7 8 10
3 AS-W1865DH0 9 10.5 9.5 11 13
4 AS-W1224DH0 6 6.5 6.5 7 8.5
5 AS-W1424DH0 6 6.5 6.5 7 9
6 AS-W1825DH0 10.5 11.5 11 12 14
7 AS-W096E1G0 7 8.5 7.5 9 10
8 AS-W126E1G0 7 8.5 7.5 9 10
I1
Cooling Heating Cooling Heating
Outdoor temp ≥ 38°C Outdoor temp < 38°C
I2
Model
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