Indoor Unit - Mitsubishi Electric PUHY-200YMF-C Service Handbook

(3) Indoor unit

Start
Breaker
turned on
YES
Operation SW
turned on
NO
1. Protection function
self-holding cancelled.
2. Indoor unit LEV fully
closed.
Remove controller
display extinguished
FAN stop
YES
Drain pump
ON
NO
3-minute drain
pupm ON
Note : 1 Indoor unit LEV fully closed : Opening 60
Note : 2 Two error modes include indoor unit trouble, (BC controller trouble) and outdoor unit side trouble. In the case of indoor unit
trouble, error stop is observed in the concerned indoor unit only, and in the cases of (BC controller and) outdoor unit side
troubles, error stop is observed in all the indoor units connected.
Note : 3 "Prohibition" status is observed (when several indoor units are connected to one connection, of BC controller and) when
connection mode is different from indoor unit operation mode. (Operation mode display on the remote controller blinks on
and off, fan stops, and indoor unit LEV is fully closed.)
NO
YES
Note :1
Note :2
NO
Error mode
YES
Error stop
Error code blinks on
Cooling mode
the remote controller
Cooling
Error command
display
to outdoor unit
Indoor unit LEV
fully closed
Prohibition
Note :1
Cooling
operations
Error code
blinks on the
outdoor
controller board
Operation mode
Heating
mode
Heating
display
Note :3
YES YES
Prohibition
NO NO
Heating
operations
Prohibition "Remote
controller blinking"
–66–
Normal operations
Trouble observed
Stop
only for PURY
Cooling/heating
Dry mode
automatic mode
Cooling/heating
Dry display
automatic display
Note :3 Note :3
YES
Prohibition Prohibition
NO NO
Dry
Cooling/heating
operation automatic
operations
Fan mode
Fan display
YES
Fan
operations