MAITEC ARMATUREN LuxuryBlack i14, Руководство пользователя и обслуживания, Страница: 64 / 89

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Software control exception EE21
1.Compressor runs out of step
2. Wrong program
3. Impurity inside compressor causes
the unstable rotate speed
1. Check the main board or change a
new one
2. Enter correct program
Current detection circuit failure EE22
1. Voltage signal abnormal
2. Driver board is damaged
1. Check the main board or change a
new one
2. Change a new driver board
Compressor start failure EE23
1. Main board is damaged
2. Compressor wiring error or poor
contact or unconnected
3. Liquid accumulation inside
4. Wrong phase connection for
compressor
1. Check the main board or change a
new one
2. Check the compressor wiring
according to the circuit diagram
Check the compressor or change a
new one
Ambient Temperature device failure
on Driver board
EE24 Ambient Temperature device failure Change driver board or main board
Compressor phase failure EE25
Compressors U, V, W are connected
to one phase or two phases. Check the actual wiring according to
the circuit diagram
Four-way valve reversal failure EE26
1. Four-way valve reversal failure
2. Lack of refrigerant (no detect when
T3 or T5 malfunction)
1. Switch to Cooling mode to check
the 4-way valve if it has been
reversed correctly
2. Change a new 4-way valve
3. Fill with gas
EEPROM data read malfunction EE27
1. Wrong EEPROM data in the
program or failed input of EEPROM
data
2. Main board failure
1. Re-enter correct EEPROM data
2. Change a new main boar
The inter-chip communication failure
on the main control board
EE28 Main board failure
1. Turn off electricity supply and
restart it
2. Change a new main board