Operation Flow Chart - Mitsubishi Electric PURY-P72 Service Handbook
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Also See for PURY-P72:
- Service handbook (403 pages) ,
- Service handbook (200 pages) ,
- Service handbook (387 pages)
Table of Contents
[ VII Control ]
[4] Operation Flow Chart
1. Mode determination flowchart
(1) Indoor unit (cooling, heating, dry, fan mode)
Start
NO
Breaker
turned on
YES
1
YES
Operation SW
turned on
NO
1. Protection function
self-holding cancelled.
2. Indoor unit LEV 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. 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 BC 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.)
HWE09130
*Note 1
*Note 2
NO
Error mode
YES
Error stop
Error display
Cooling mode
Heating 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.
heating operation.
- 160 -
Normal operation
Error
Stop
Operation 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
dry operation.
Prohibition
"Blinking display on
the remote controller"
1
Automatic
Fan mode
cooling/heating mode
Auto COOL/HEAT
Fan display
display
*Note 3
YES
Prohibition
NO
Auto
Fan operations
cooling/heating mode
GB
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