Midea MHC-96HWD1N1(A) Service Manual page 79

MCAC-UTSM-201503
2
Dial code
3
Notes:
1. For the new series product, we can connect the indoor CCM controller via XYE port of master outdoor
unit of every refrigerant system. Notice that in this case, the outdoor unit must be set to auto addressing
mode. And it will be effective after about 6 minutes.
2. To connect indoor CCM controller via XYE port of indoor unit, this wiring method is suitable for all type
of indoor units, not just for new indoor units.
3. When new indoor units and old indoor units mix connect to one refrigerant system, we can just connect
the indoor CCM controller via XYE port of indoor units. If we connect the indoor CCM controller via XYE
port of master outdoor unit, the CCM controller cannot control old indoor units.
4. If one system that connect to indoor CCM controller include 10 HP or above duct indoor unit, we
recommend you set the address of every indoor unit manually.
2.4 Fault and protection codes
Fault code Content
EF Other faults
EE Water level detection malfunction
ED Reserved
EC Cleaning malfunction
EB Inverter module protection
EA Current of compressor is too large (4 Times)
E9 Communication malfunction between main board and display board
E8 Wind blowing speed is out of control
E7 EEPROM error
E6 Detection of current direction alternating is abnormal
E5 T3 or T4 senor of discharge of compressor fails down
R410A Full DC Inverter Split Duct Type Technical Manual
With the optional
function
No the optional
function
78