Bering BEXP05i Manual Del Usuario página 44

Malfunction
Software control
exception
Current detection circuit
failure
Compressor start failure
Ambient Temperature
device failure on Driver
board
Compressor phase
failure
Four-way valve reversal
failure
EEPROM data read
malfunction
The inter-chip
communication failure
on the main control
board
Error code
1.Compressor runs out of step
2. Wrong program
EE21
3. Impurity inside compressor
causes the unstable rotate speed
1. Voltage signal abnormal
EE22
2. Driver board is damaged
1. Main board is damaged
2. Compressor wiring error or
poor contact or unconnected
EE23
3. Liquid accumulation inside
4. Wrong phase connection for
compressor
Ambient Temperature device
EE24
failure
Compressors U, V, W are
EE25 connected to one phase or two
phases.
1. Four-way valve reversal failure
2. Lack of refrigerant (no detect
EE26
when T3-TH2 or T5-TH1
malfunction)
1. Wrong EEPROM data in the
program
EE27
EEPROM data
2. Main board failure
EE28 Main board failure
Reason
or failed input of
40
Solution
1. Check the main board or
change a new one
2. Enter correct program
1. Check the main board or
change a new one
2. Change a new driver board
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
Change driver board or main board
Check the actual wiring according
to the circuit diagram
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
1. Re-enter correct EEPROM data
2. Change a new main board
1. Turn off electricity supply and
restart it
2. Change a new main board