Midea MV5-X252W/V2GN1 Service Manual page 48

2.3.4 Digital display output
Table 5-2.5: Digital display output in different operating states
Outdoor unit state
Standby
For single
Normal compressor units
operation
For dual
compressor units
Error or protection
System check
2.3.5 LED indicators LED1 to LED7
Table 5-2.6: LED indicators LED1 to LED7
Indicator
LED1 Power supply indicator. Continuously on if the power supply is normal.
Running indicator. Continuously on if the system is operating normally and flashing if the
LED2
system is in standby.
Error indicator. Flashing slowly
LED3
outdoor unit has occurred. Flashing rapidly
Inverter module operating indicator. Continuously on if the compressor is running normally
LED4/6 and flashing if an inverter module error has occurred
continuously on) or if the system is standby.
Inverter module error indicator. Continuously on if an inverter module error has occurred
LED5/7
(in which case LED4/6 will be flashing).
Notes:
1. Flashing slowly means flashing on for 1s then off for 1s in a cycle; flashing rapidly means flashing on for 0.5s then off for 0.5s in a cycle.
2. If an inverter module error occurs, refer to Part 5, 4.11 "xH4 Troubleshooting". The error code is displayed on the digital display.
3 Error Code Table
Table 5-3.1: Error code table
1
Error code
E0 Communication error between outdoor units
E1 Phase sequence error
E2 Communication error between indoor and master unit
E4 Outdoor ambient temperature sensor error
E5 Abnormal power supply voltage
E7 Compressor top or discharge pipe temperature sensor error
E8 Outdoor unit address error
xE9 EEPROM mismatch
xH0 Communication error between main control chip and inverter driver chip
H1 Communication error between main control chip and communication chip
H2 Number of slave units detected by master unit has decreased
H3 Number of slave units detected by master unit has increased
xH4 Inverter module protection
201608
Parameters displayed on DSP1
Unit's address
--
Running speed of compressor B in
rotations per second
-- or placeholder
Refer to Table 5-2.4
LED indicator function and status
1
if a communication error between indoor and master
1
for other errors. Off when there is no error.
Content
Parameters displayed on DSP2
The number of indoor
communication with the outdoor units
Running speed of the compressor in
rotations per second
Running speed of compressor A in
rotations per second
Error or protection code
Refer to Table 5-2.4
2
(in which case LED5/7 will be
Only displayed on the slave unit with the error
Displayed on the unit with the error
Only displayed on the master unit
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Only displayed on the master unit
Only displayed on the master unit
Displayed on the unit with the error
V5 X VRF 50/60Hz
DSP1
units in
2
Remarks
Table continued on next page ...
DSP2
47