Mitsubishi Heavy Industries V Multi FDC71VNX Technical Manual page 211

Error code
E18
Remote control:
1. Applicable model
All models
2. Error detection method
IU address has been set using
the "Master IU address set"
function of remote control.
3. Condition of error displayed
Same as above
4. Presumable cause
Same as above
Note:
LED Green Red
Keeps flashing 1-time flash
Indoor
Keeps flashing Stays Off
Outdoor
5. Troubleshooting
Diagnosis
E18 occurs
Is "Master IU
address set" function of remote
control used?
210
-
Content
Address setting error of
master and slave indoor units
YES
-
'19 • PAC-T-327
Countermeasure
• In cases of RC-EX3A
Menu ➞ Service setting
➞ IU settings ➞ Select IU
• In cases of RC-E5
Return address No. to
"IU ..." using [ ▲ ] or
[ ▼ ] button.