Mitsubishi Electric CMB-WP1016V-GA1 Service Handbook page 90

[ VI Control ]
(3) HBC controller (cooling only, heating only, cooling main and heating main modes)
Protection function
self-holding cancelled.
Solenoid valves OFF
LEV Fully closed
Note 1. The system may go into the error mode on either the indoor unit side or the HBC 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 HBC controller or the outdoor unit is experiencing a problem,
all the connected units will stop.
HWE1410A
Start
Breaker
turned on
YES
3
NO
Operation
command
YES
1. Determination of operation mode
(Cooling only, Heating only, Mixture
of units in cooling and heating)
2. Transmitted to the outdoor unit
Reception of operation mode
command from the outdoor unit
*Note 1
Error mode
NO
Fan
Operation
mode
All units in the
same mode
Operation
mode
Cooling Only Heating Only
3
NO
YES
Mixture of units in cooling and heating
Operation
mode
Cooling Main Heating Main
- 81 -
Normal operation
Error
Unit in the stopped state
Error command to
outdoor unit
Error stop
Self-holding of
protection function
Error command to
indoor unit
GB