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1. DESCRIZIONE DEI COMPONENTI
GB
GB
GB
GB
9. FUNCTIONAL ANOMALIES
Anomaly code on the
indoor unit display
Anomaly description
E0
EEPROM error of the indoor unit
E1
Communication error
E3
Internal fan speed is out of control
E4
Indoor temperature sensor T1 disconnected or short circuited
E5
Indoor temperature sensor T1 disconnected or short circuit Evaporator temperature sensor T2 disconnected or short circuit
EC
Observe coolant leaks
F0
Overcurrent Protection
F1
Outdoor temperature sensor T4 disconnected or short-circuited
F2
Exchanger temperature sensor (condenser) T3 disconnected short-circuit
F3
T5 short-circuit disconnection temperature sensor
F4
External drive EEPROM error
F5
External fan speed out of control
PO
IPM module malfunction or IGBT module overcurrent protection
P1
High or too low voltage protection
P2
Overvoltage protection of the IPM or compressor module
P4
Inverter error
9.1 Messages displayed on the indoor unit display
There is a DSP1 display and a SW1 button on the Dual and Trial External PCBs.
By pressing the SW1 button you can scroll through the various parameters, the display shows the number of the selected parameter,
After 1.5 seconds without any pressure, the value of the selected parameter is displayed.
Key SW1
Display
DSP1
9.2 Checking the operating status of Dual and Trial Drives
TRIAL
DUAL
