V6-i VRF 50/60Hz
86
Midea
V6
-i
Series S
er
vice M
anual
2.9
xF1: DC bus voltage error
Digital display output
2.9.1
'x' is a placeholder for the compressor system (compressor and related electrical components), with 1 representing
compressor system A and 2 representing compressor system B.
Description
2.9.2
1F1 indicates compressor A DC bus voltage error; 2F1 indicates compressor B DC bus voltage error.
All units stop running.
Error code is only displayed on the unit with the error.
Trigger / recover condition
2.9.3
Trigger condition: DC bus voltage < 350V or DC bus voltage > 700V continuously for 10 seconds.
Recover condition: DC bus voltage goes back to normal.
Reset method: Restart automatically.
Possible causes
2.9.4
Loosened wiring of the compressor inverter module.
Incorrect wiring of the reactor and DC bus wire.
Abnormal power supply.
Inverter module damaged.
