Operation Flow Chart - Mitsubishi Electric CMB-WP1016V-GA1 Service Handbook

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[3] Operation Flow Chart

1. Mode determination flowchart
(1) Indoor unit (cooling, heating, dry, fan mode)
Start
Breaker
turned on
YES
1
Operation SW
turned on
NO
1. Protection function
self-holding cancelled.
2. HBC controller VB3 fully closed.
Remote controller
display lit off
YES
Auxiliary heater
ON
NO
1. Auxiliary heater OFF FAN stop
2. Low fan speed for
1 minute
YES
Drain pump
ON
NO
3-minute drain
pump ON
1
*Note 1. HBC controller VB3 fully closed : Opening 0.
*Note 2. 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.
*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, HBC controller VB3 becomes fully closed.)
HWE1410A
NO
YES
*Note 1
*Note 2
NO
Error mode
YES
Error stop
Error display Cooling mode
Self-holding of
Cooling display
protection function
*Note 3
YES
Error command
to outdoor unit
Prohibition
Indoor unit
NO
LEV fully closed.
*Note 1
Refer to 2-(1) for
cooling operation.
Normal operation
Error
Stop
Operation mode
Heating mode Dry mode
Heating display Dry display
*Note 3 *Note 3
YES YES
Prohibition Prohibition
NO NO
Refer to 2-(2) for Refer to 2-(3) for
heating operation. dry operation.
Prohibition
"Blinking display on
the remote controller"
1
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Automatic
Fan mode
cooling/heating mode
Auto COOL/HEAT
Fan display
display
*Note 3
YES
Prohibition
NO
Auto
Fan operations
cooling/heating mode
GB