Toshiba MM-A0160HX, Service Manual

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13
Control Circuit Configuration
Indoor Units
(2) Display on remote controller
In the following conditions, “STANDBY” is displayed on the remote controller.
1) “STANDBY” display
Fan operation is available, but PMV of the indoor unit is not permissible. (Refrigerant does
not flow.)
a. Indoor unit over capacity
When the total HP of the connected indoor units exceeds 1.35 times of outdoor HP, the
indoor unit will display “STANDBY” mode.
The check code “89” is displayed at the same time when “STANDBY” is displayed.
b. Outdoor unit phase order error
If phase order of power source of the outdoor unit is different, the indoor unit will
display “STANDBY” mode.
The check code “AF” is displayed at the same time as “STANDBY”.
c. Indoor operation below 0.8HP control
When the total capacity of the operating indoor units is below 0.8HP, the relevant
indoor unit displays “STANDBY” mode. A check code is not displayed.
Incorrect setup of indoor HP is confirmed. Recheck setup of SW08.
(3) Indoor PMV full open/full close function
PMV used in the indoor unit can be forcibly opened fully, closed fully, and opened in
medium degree for 2 minutes.
CN33 CN32 PMV Opening
Open Open Normal operation
Open Short Fully open
Short Open Fully closed
Short Short Medium opening (Half open)