Bảng mã lỗi của Cụm máy nén dàn ngưng Emerson dòng ZX – ZXL – ZXD – ZXB

Suction pressure probe failure alarm

Probe failure or out of range

No (ZXD Unit Only)

Automatic Reset when the probe restarts working

Báo động lỗi đầu dò nhiệt độ ngưng tụ

Condensing temperature probe failure alarm

Probe failure or out of range
(-40 ~ 110°C)

Chức năng: điều khiển tốc độ quạt bị tắt

Function: fan speed
control is disabled

Tự động đặt lại khi đầu dò khởi động lại hoạt động

Automatic Reset when the probe restarts working

Discharge temperature probe failure alarm

Probe failure or out of range
(-40 ~ 180°C)

Function: discharge temperature protection is disabled

Automatic Reset when the probe restarts working

PHE vapor inlet temperature probe failure alarm

Probe failure or out of range
(-40 ~ 110°C)

Function: PHE Superheat Control is disabled (ZXL/ZXB unit only)

Automatic Reset when the probe restarts working

Probe failure or out of range
(-40 ~ 110°C)

Function: PHE Superheat Control is disabled (ZXL/ZXB unit only)

Automatic Reset when the probe restarts working

Ambient temperature probe failure alarm

Probe failure or out of range
(-40 ~ 110°C)

Related functions are disabled

Automatic Reset when the probe restarts working

Current sensor 1 error alarm

Out of range

Related functions are disabled

Automatic Reset when the probe restarts working

Current sensor 2 error alarm

Out of range

Related functions are disabled

Automatic Reset when the probe restarts working

Voltage sensor 1 error alarm

Out of range

Related functions are disabled

Automatic Reset when the probe restarts working

Voltage sensor 2 error alarm

Out of range

Related functions are disabled

Automatic Reset when the probe restarts working

Voltage sensor 3 error alarm

Out of range

Related functions are disabled

Automatic Reset when the probe restarts working

Missing phase alarm

One or two phases of compressor
power supply lost or Voltage sensors do not work (3-ph unit only)

The compressor will be tripped

Automatically with time delay

Missing phase lock

Missing phase alarm happened
frequently

The compressor will be tripped and the unit will be locked

Press “Start” >5 sec or manually power-off and power-on

Wrong phase sequence lock

Compressor power supply has
wrong sequence (3-phase unit only)

The compressor will be tripped and the unit will be locked

Press “Start” >5 sec or manually power-off and power-on

Imbalanced 3-phase
warning

3-Ph currents are not balanced (3-Ph unit only)

No

Automatically with time delay

Over current alarm

Compressor current is larger than
settings

The compressor will be tripped

Automatically with time delay

Over current lock

Over current alarm happens frequently

The compressor will be tripped and the unit will be locked

Press “Start” >5 sec or manually power-off and power-on

Compressor running circuit open alarm

Compressor running circuit open
(1-ph unit only)

The compressor will be tripped

Automatically with time delay

Compressor running circuit open lock

Running circuit open alarm happens
frequently

The compressor will be tripped and the unit will be locked

Press “Start” >5 sec or manually power-off and power-on

Compressor starting circuit open alarm

The compressor will be tripped

Automatically with time delay

Compressor starting circuit open lock

Compressor starting circuit open
alarm happens frequently

The compressor will be tripped and the unit will be locked

Press “Start” >5 sec or manually power-off and power-on

Low voltage alarm

Voltage is lower than settings; or
voltage sensors do not work

The compressor will be tripped

Automatically with time delay

Low voltage lock

Low voltage alarm happens frequently

The compressor will be tripped and the unit will be locked

Press “Start” >5 sec or manually power-off and power-on

Over voltage alarm

Voltage is higher than settings

The compressor will be tripped

Automatically with time delay

Over voltage lock

Over voltage alarm happens frequently

The compressor will be tripped and the unit will be locked

Press “Start” >5 sec or manually power-off and power-on

Compressor internal protector open warning

Compress internal protector is open; or current sensors do not work

The compressor will be tripped

No controller power supply alarm

Controller lost power supply

High pressure switch alarm

High pressure switch is open

The compressor will be tripped

Automatically when HP switch
closes

High pressure switch lock

High pressure switch alarm happens frequently

The compressor will be tripped and the unit will be locked

Press “Start” >5 sec or manually power-off and power-on

Low pressure switch alarm

Low pressure switch is open

The compressor will be tripped

Automatically when LP switch closes and time delay

High discharge temperature alarm

Discharge temperature is higher
than settings

The compressor will be tripped

Automatically when discharge temperature is lower than settings and time delay

Higher discharge temperature lock

High discharge temperature alarm
happens frequently

The compressor will be tripped and the unit will be locked

Press “Start” >5 sec or manually power-off and power-on

High condensing temperature alarm

Condensing temperature is higher
than settings

No

Press “Start” >5 sec or manually power-off and power-on

EXV Full-open warning

Less refrigerant charge or leakage

No

Automatically when EXV is not at
full-open

Less injection warning

Less refrigerant charge or leakage

No

Automatically when PHE super
heat is smaller than settings

High side liquid back warning

Suction liquid back or injection too
much

No

Automatically when the difference
of discharge temperature and condensing temperature is higher than settings and time
delay

RTC warning

The time is configured for the new
controller

No

RTF warning

Communication error between MCU and unit clock

No

Probe configuration error alarm

The same probes are configured

No

Automatically when the probes are configured correctly

Digital inputs configuration error alarm

The same digital inputs are configured

The related functions will be disabled

Automatically when the digital inputs are configured correctly

Compressor configuration
error alarm

Digital compressor and solenoid
valve configuration does not match

The compressor will not work

Injection probe configuration
error alarm

EXV and injection configuration do
not match

EXV will not work

Automatically when injection probe is configured correctly

EEPROM R/W error lock

write/read error into EEPROM

The compressor will tripped and the unit will be locked

Hold “start” button for 5s or manual power off and on, alarm will disappear when the communication between MCU and EEPROM is success.