Midea V8 VRF Series User Manual

V8 VRF Indoor Units
94
Midea
V8
Series VRF Indoor Units
6.1.46 J1E - IPM (fan module) overcurrent protection
Error display
Digital display
Display position
Panel or display box
Wired controller
Spot check interface
query
Error code is not
displayed
Error impact
The faulty IDU stops. Other IDUs of the same system: operate normally.
ODU of the same system: operate normally.
Error trigger
The fault is triggered if one of the following conditions is met:
1) The current value (AC) detected for any phase line of U/V/W on the IPM exceeds the set
overcurrent protection value of the IPM.
2) A fault signal output by the IPM protection circuit is detected.
Error recovery
Automatic recovery
Possible cause
 The motor insulation is damaged or motor coils are short circuited.
 The fan drive board is damaged.
 The IDU main control board is damaged.
Troubleshooting
J1E
Cause 2: Measure the resistance between
any wire pin of the power cord plug of the
motor and the metal housing of the motor.
If the resistance is less than 1 MΩ, the
motor is damaged
Cause 1: Measure the inter-turn winding
resistance between the red, white, and
black wires of the motor power cable. If
there is a short circuit or an open circuit,
the motor is damaged
Replace the motor
Replace the motor
Cause 3: The fan drive board is damaged
Replace the fan drive
board (1)
Cause 4: If the error cannot be cleared
after causes 1/2/3 have been eliminated,
the main control board of the IDU is
damaged
Replace the main control
board of the IDU
Note 1: Please observe the following rule when replacing the fan drive board: For units whose fan
drive board is welded onto the main control board, if either the fan drive board or main control
board becomes faulty, the whole control board has to be replaced.

Midea V8 VRF Series Specifications

General

Brand	Midea
Model	V8 VRF Series
Category	Air Conditioner
Language	English