Indoor Service Manual

23
Specications are subject to change without notice. © 2016 Mitsubishi Electric US, Inc.
9-2. Fan control
*1 Heater will not operate during all error modes. Heater will only operate during a communication error between indoor unit and outdoor unit.
*2 While the heater is on, the fan will operate at high speed regardless of the fan setting on the remote controller.
By setting the Mode No. 23 in the Function Table in section 9-1, the following patterns of fan control will become possible.
Fan control patterns
* If a heater is installed in the duct, do not use CN4Y. By doing so, the fan will turn off when the heater is on,
which may result in fire.
Fan in defrost Fan(All modes other
than defrost)
Factory
setting
CN4Y for FAN control
(CN24RELAY-KIT-CM3)
Mode(function)
No.23(123)
Disabled
(CN4Y cannot be used with this unit)
1
2
STOP(Heater OFF)
STOP(Heater OFF)
Set(Heater ON
*2
)
High
*1
(Heater ON
*2
)
-
Fan Speed Setting *3
Mode
Setting
Mode No. Setting Initial Setting
Heating Thermo-OFF DEFROST or ERROR
Fan Control
Very Low Very Low 25 1 ○
STOP Remote Controller Setting 25 2 -
Remote Controller Setting Remote Controller Setting 25 3 -
*3 Refer to the Installation Manual for function settings.
By setting the Mode No. 23 in the Function Table in section 9-1 and using CN4Y from the CN24RELAY-KIT-CM3 kit, the
following patters of fan control will become possible.
Fan Control Patterns
CN4Y for FAN control
(CN24RELAY-KIT-CM3)
Mode (function)
No. 23 (123)
Heater operation in
defrost and error *1
Fan operation in
defrost and error
Fan (All modes
other than defrost
and error)
Factory Setting
Enabled
1 OFF STOP Set (Heater ON) ●
2 ON STOP High*2 (Heater ON) ─
*1 Heater will not operate during all error modes. Heater will only operate during a communication error between indoor unit and
outdoor unit
*2 While the heater is on, the fan will operate at high speed regardless of the fan setting on the remote controller.