Fan Control - Mitsubishi Electric M Series Service Manual

9-2. Fan control

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 Mode (function)
(CN24RELAY-KIT-CM3) No. 23 (123)
Enabled
*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.
* 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 Speed Setting *3
Mode
Heating Thermo-OFF
Very Low
Fan Control
Remote Controller Setting
*3 Refer to the Installation Manual for function settings.
Heater operation in
defrost and error *1
1 OFF
2 ON
Setting
DEFROST or ERROR
STOP Remote Controller Setting
Remote Controller Setting
Fan operation in Fan (All modes
defrost and error other than defrost
and error)
STOP Set (Heater ON)
STOP High*2 (Heater ON)
Mode No.
Very Low 25
25
25
21
Factory Setting
Setting Initial Setting
1
2 -
3 -
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