Mitsubishi Electric CMB-PW202V-J Service Handbook page 93

[ VIII Troubleshooting ]
1. Error Code
7105
Address setting error
2. Error definition and error detection method
Erroneous setting of OC unit address
Erroneous setting of WCB address
3. Cause, check method and remedy
Error source
Outdoor unit Erroneous setting of OC unit address
WCB The address of outdoor unit is not being set to 51 -
100.
The address of WCB is not set to 51 - 100.
HWE09070
Cause
- 84 -
Check method and remedy
Check that the outdoor unit and WCB address-
es are set to 00 or a number between 51 and
100.
If the outdoor unit address is out of the valid
range, reset the address with the power to the
outdoor unit turned off.
If the WCB address is out of the valid range, re-
set the address with the power to both the out-
door unit and WCB turned off.
GB