Table of Contents
[3] Operation Flow Chart
1. Flow to determine the mode
(1) Indoor unit (cooling, heating, dry, fan mode)
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
YES
Auxiliary heater
ON
NO
1. Auxiliary
FAN stop
heater
OFF
2. Fan low
speed
for 1
minute
YES
Drain pump
ON
3-minute
NO
drain
pump
ON
Notes :
❉1 Indoor unit LEV fully closed : Opening 41.
❉2 T
he error mode includes that of indoor units, BC controller and outdoor units. At indoor side error (excluding water leak),
the indoor unit introuble only will be stopped in emergency, while at outdoor and BC controller side error, all indoor units
connected will be stopped.
❉3
When multiple indoor units are connected to a pipe-end connection, the units will be in the "prohibition" mode if the mode at
the pipe-end connection and the operation mode of the indoor units do not match. (Displayed on the remote controller are the blinking
operation mode, FAN stop, and fully close LEV on the indoor unit.)
NO
1
From outdoor uni t
YES
Note: ❉1
Note: ❉2
NO
Error mode
YES
Error stop
Error display
Cooling mode
Protection func-
Cooling display
tion self-holding
Error command
to outdoor unit
Prohibition
Indoor unit LEV
fully closed
Cooling operation
Refer to 2-(1)
Operation mode
Heating mode
Heating display
Note: ❉3
Note: ❉3
YES
YES
Prohibition
NO
NO
Heating operation
Refer to 2-(2)
Prohibition "Remote
controller blinking"
Operation command to outdoor unit (to 2 )
- 102 -
Normal operation
Trouble observed
Stop
Cooling-heating
Dry mode
automatic mode
Cooling-heating
Dry display
automatic display
Note: ❉3
Note: ❉3
YES
YES
Prohibition
Prohibition
NO
NO
Cooling-heating
Dry operation
automatic operation
Refer to 2-(3)
Fan mode
Fan display
Fan operations
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