Outdoor Indicators Display Status; Communication Malfunction; Module Protection; Compressor Phase Current Protection - Toyotomi GAN GAG A180IV Service Manual

Once detected the whole unit current exeed the limit value 14. OA, that indoor temp. arrived, the unit will stop to run, the compressor
stopped 3mins, will automatically resume to running status, protection times exceeds 6 times ( If compressor running time exceeds
7mins that the protection times will be cleared to 0), the system will be turned off and send the over current protection malfunction
signal to indoor unit, cannot automatically resume to run, it must be press ON/OFF to turn off the unit.
2. 4. 2 Current drop frequency, limit frequency control
When detected the whole unit current
When detected the whole unit current

2.5Communication malfunction

When continuously 3mins. without receive from indoor or 10s cannot receive signal from drive board that is communication malfunction,
outdoor unit will stop.

2.6 Module protection

Module protection, compressor stop, the unit will stop when indoor temp. arrive at setting temp., after
compressor has stopped 3mins. later, it will resume to running status; if continuously 6 times module
protection, the compressor cannot resume to run. It is need to press ON/OFF can resume. (If compressor
running time exceeds 7min that the protection time will be clear to 0).
2.7 Demagnetization current protection
The peak value for demagnetization current is 41A, when deteced this value is more than regulated value, whole unit will drop frequency,
after drop frequency, if detected the value still more than regulated value, the compressor will stop to run. After drop frequency, if the value
is less than the regulated value, it will resume to the target frequency point. And resume to the target frequency point procedure, detect
demagnetization current peak value is more than regulated value, then execute the drop frequency order.

2.8 Compressor phase current protection

During compressor running, detected the compressor's phase current and according to the following logic for control:
(1) If detected DC generatrix current
drop frequency), then detected DC generatrix current
frequency rise up to target frequency running, if target frequency is less than frequency or there is any other frequency happens, the slow
rise limit will be canceled. When whole unit running drop frequency arrives the lowest frequency and DC generatrix
the temperature point unti will stop and displays the generatrix over current protection malfunction, compressor has stopped 3mins, will
automatically resume to running status.
(2) If compressor frequency rise and deteced any phase current 12A that the compressor frequency rise up to the target frequency running.
2.9 Module over heat protection function
If detected the module surface temp.

3 Outdoor indicators display status

Definition
D101 (Green)
1Blink
Compressor runs
Unit stop for
compressor high
2Blinks
pressure protection
3Blinks
Unit stop for air exhaust protection
Unit stop for communication
malfucntion (including indoor
4Blinks
unit and drive board)
Unit stop for module protection
5Blinks
Unit stop for
6Blinks
over current protection
7Blinks
Unit stop for refrigerant overload
Unit stop for heating
8Blinks
anti-high temp.
Unit stop for refrigerant
9Blinks
anti-freezing
Unit stop for
10Blinks
Temp. sensor malfunction
Unit stop for compressor
11Blinks
overload protection
Unit stop for compressor
12Blinks
low pressure protection
Unit stop for DC generatrix
13Blinks
over current protection
14Blinks
EEPROM fault
DC power supply short circuit
15Blinks
12. 0A, forbidden frequency rise.
13. 0A, and f max. running frequency, compressor drop frequency.
13A, compressor drop frequency running (indicator displays DC generatrix overcurrent protection
12A, and target frequency more than the running frequency, the compressor's
110 , the whole unit will accord to IPM module protection process.
The meaning of lights blinks for mainbaord
Definition
D102 (Red)
1Blink
2Blinks
3Blinks
4Blinks
5Blinks
Communication malfunction signal
6Blinks
sent from indoor
7Blinks
8Blinks
Definition
D104 (Yelllow)
Air exhaust protection
1Blink
drop frequency
Over current protection
2Blinks
drop frequency
Refrigerant over load drop
3Blinks
frequency
Heating anti-high temp. drop
4Blinks
frequency
5Blinks Preserved for one to two use
Defrosting
6Blinks
7Blinks Anti-freezing protection drop frequency
DC generatrix over current protection
8Blinks
drop frequency
13A, when arrive at