Справочник Пользователя для Mitsubishi Electronics PKA-A30KA.TH

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Note:
· When the uint is restarted to operate after turning off the power or OFF operation, the unit which was operating will start oper-

ation.

· To operate the main unit, refer to the 10-1-2. and set the requet code No. which is not the same as the current one, and set 

again the former request code No.

· When the 1st unit can NOT supply with sufficient capacity for exceptionally high-demand conditions and the actual room 

temperature reaches set point *, the 2nd unit starts operation in conjunction with the 1st unit. 

· Once the actual room temperature goes down to 4degrees C (7.5 degrees F) below set point*, the 2nd unit stops operation 

automatically.
(* set point = set temperature by R/C (remote controller) + 4, 6, 8:(7.5, 10.8, 14.4°F) (selectable))

· Number of operating units is determined according to the room temperature and set point.
· When room temperature becomes higher than set point, standby unit starts. (2 units operation)
· When room temperature falls below set point -4:(-7.5°F), standby unit stops. (1 unit operation)

Only PKA-A·KA (Wired remote controller use model)
10-1-1. Operation

· Main and sub units operate alternately according to the interval of rotation setting.
w Main and sub unit should be set by refrigerant address. (Outdoor Dip switch setting)

Refrigerant address "00"

Main unit

Refrigerant address "01"

Sub unit

· When error occurs to one unit, another unit will start operation. (Back-up function)

· This function is available only by the grouping control system (INDOOR UNIT: OUTDOOR UNIT=1:1) of 2 refrigerant 

groups. (Refer to Fig. 1)

· Main indoor unit should be connected for wired remote controller and the transmission line (TB5) for main and sub unit 

should also be connected. (Refer to Fig. 1)

  (This function cannot be set by wireless remote controller.)
· Set refrigerant address of each unit. (Dip switch on the outdoor unit ··· Refrigerant address 00/01)

Operation pattern

OC-1

OC-2

IC-1

IC-2

3(2)

3(2)

2

RC

2

Main
unit

Sub
unit

Refrigerant address
"01"

Refrigerant address
"00"

Fig. 1

(Ex:When the request code number is  "313", each unit operates alternately in daily cycle.)

Error occurs on main unit. 

Start operation

Run

Abnormal condition

Stop

Run

Main

unit

IC-1

Sub

unit

IC-2

Error occurs on main unit.

Start operation

1~28 days

1~28 days

Run

Abnormal condition

Stop

Stop

Run

Run

Stop

Run

Main

unit

IC-1

Sub

unit

IC-2

Main      Sub

Main      Sub

Sub      Main

Main      Sub

OC : Outdoor unit
IC  :  Indoor unit
RC  :  Wired remote controller