Midea V8 VRF Series User Manual

V8 VRF Indoor Units
91
Troubleshooting Guide
6.1.43 U12 - Horsepower code not set
Error display
Digital display
Display position
Panel, display box, and wired controller
Error impact
1) The faulty IDU stops running.
2) Other IDUs of the same system:
 If the address for the faulty IDU has been set, other IDUs will operate normally.
 Otherwise, other IDUs will encounter the following situations: The fan continues running, the EXV is
closed, and ODU error code "A51" is displayed (V6 platform IDU displays the code "Ed").
ODU of the same system:
 If the address for the faulty IDU has been set, the ODU will operate normally.
 Otherwise, the ODU will display the error code "C26" (number of IDUs reduced) (V6 platform ODU
displays the code "H7")
Error trigger
When detecting that the horsepower code for IDU main control board has not been set
Error recovery
Automatic recovery
Possible cause
 The horsepower code has not been set after replacing the IDU main control board.
 The new IDU main control board is damaged.
Troubleshooting
U12
Is the fault cleared?
Replace the main control
board of the IDU
Fault cleared
Yes
No
Use the dedicated tooling
(1) to set the horsepower
code for the main control
board of IDU, and power
on the unit again
Note 1: For specialized tooling and instructions, please contact your local dealer or technical support
personnel.

Midea V8 VRF Series Specifications

General

Brand	Midea
Model	V8 VRF Series
Category	Air Conditioner
Language	English