Control Outline - Toshiba MD-VNK802HEXE Service Manual

7

Control outline

Indoor unit (Air to Air Heat Exchanger with DX Coil Unit)
Control specifications
No. Item
1 When the 1) Judge the outdoor unit
power is The outdoor unit is judged when the power is reset. The control is switched
reset depending on the judgment result.
2) The check code is cleared when the power is reset during the occurrence of an
error. If an abnormal state continues even after the unit is restarted by pressing the
[ON / OFF] button on the remote controller, the check code is redisplayed on the
remote controller.
2 Single 1) Pressing the [VENT.] button allows you to operate only the Air to Air Heat
operation Exchanger with DX Coil Unit in the remote control group by setting CODE [31]
Single operation of ventilation of the header unit to "1: Possible" when the Air to Air
Heat Exchanger with DX Coil Unit is connected to the remote control group with the
normal indoor unit set as the header unit (when in air-conditioning linkage system).
Before operation
Operation status
Stoppage status
* The operation mode is always "fan" in Air to Air Heat Exchanger with DX Coil Unit-
only operation. The external input / output signals differ from those of the normal
operation. When using the external signals, use the terminal of the header unit
(normal indoor unit).
3 Operation 1) The operation is switched by the request from the remote controller.
switch
By remote controller
* The AUTO mode cannot be selected for the Air to Air Heat Exchanger with DX
Coil Unit.
2) When CODE [31] Single operation of ventilation is set to "1: Possible" in air-
conditioning linkage system, the Air to Air Heat Exchanger with DX Coil Unit-only
operation is "fan" and the operation mode cannot be switched.
4 Ventilation 1) The ventilation mode is switched by the request from the remote controller.
mode switch
By remote controller
Heat exchange
* The Bypass mode cannot be selected for the Air to Air Heat Exchanger with DX
Coil Unit.
Specification outline
Normal indoor unit : Operation continued
Air to Air Heat Exchanger with DX Coil Unit : Stopped
Normal indoor unit : Stopped
Air to Air Heat Exchanger with DX Coil Unit : Fan
operation (*)
Stop Stop the air conditioner running
Fan Fan operation
Cool Cooling
Dry Drying
Heat Heating
Always perform heat exchange.
Heat exchange or Bypass
• Automatically select the operation mode and the
Automatic
ventilation mode depending on TRA and TOA.
For details, see 12.
After operation
Description
After operation
20
Remarks
CODE No.
[31]
CODE No.
[EA]
TRA: Return Air
Temperature
TOA: Outdoor Air
Temperature