Mitsubishi Electric PURY-P72 Service Handbook page 156

[VII Control]
[4] Operation Flow Chart
1. Mode determination flowchart
(1) Indoor unit (cooling, heating, dry, fan mode)
Bmaker
turned on
,
,
~SU
- - - - Normal operation
- - - - Error
--------. Stop
YES
1.
Protection function
self-holding cancelled.
2. Indoor unit LEV fully dosed.
·Note2
NO
"Note 1. Indoor unit LEV fUlly closed: Opening 41.
"Note 2. The system may go into the error mode on either the indoor unit side or the
Be
controller or outdoor unit side.
If some of the indoor units are experiencing a problem, only those indoor units that are experiencing the problem
will stop. If the BC controller or the outdoor unit is experiencing a problem, all the connected units will stop.
"Note 3. If multiple indoor units are connected to a port and there is a discrepancy in the operation mode between the
indoor unit and the port, the operation will be prohibited. (Operation mode blinks on the remote controller, the
Fan stops, indoor unit LEV becomes fully closed.)
HWE080JA
- 146- GB