Toshiba MD-VNK802HEXE Service Manual page 31

No. Item
20 Short 1) The operation continues for 5 minutes even if a thermo OFF condition is met.
intermittent
2) The Cool / Heat switch, operation preparation, and protection control are given
operation
priority, and the thermo is turned off.
guarantee
control
21 Retained 1) If the heating operation is stopped, the indoor fan is operated in "Low" for
heat approximately 30 seconds.
elimination
22 HA control 1) Connected to telecommunications or remote I/F. The ON / OFF operation can be
performed remotely by HA signal input.
2) The ON / OFF status is output to the HA output terminal.
3) The HA input / output specifications conform to the JEMA standards. However,
some air-conditioner linkage systems do not conform to the standards. Do not use
the HA terminals of the Air to Air Heat Exchanger with DX Coil Unit but those of the
header unit (normal indoor unit).
23 Filter sign 1) Accumulate the running time of the indoor fan. When a given time (2500 H) has
display passed, send the filter replacement signals to the remote controller, and display it
on LCD.
2) When the filter reset signals are received from the remote controller, the
accumulated timer is cleared. If a given time has already passed, the calculated time
is reset, and the LCD display disappears.
24 "Prep" <Prep (Operation)> Displayed on the remote controller
(Operation)
1) If the following check code appears:
"Prep"
• The power wire open phase "P05" was detected.
(Heat)
• The overflow "P10" was detected.
display
• The interlock warning "L30" was detected.
2) During forced thermo OFF
• The cooling / drying operation cannot be started as another indoor unit operates
heating.
• The cooling is given priority (outdoor I/F circuit board SW11-bit1 is set to ON), and the
heating operation cannot be started as another indoor unit operates cooling / drying.
3) The above indoor units that cannot run will be in thermo OFF standby mode.
4) The system stops the indoor fan for heat refrigerant (oil) collecting operation.
<Prep (Heat)> Displayed on the remote controller
1) The system stops the indoor fan when the heating operation starts or to protect cool
air discharge during heating. (including defrosting during thermo OFF)
Specification outline
29
Remarks
To use the HA terminal
(CN61) for remote
operations, a separately
sold connector is
required.
In group operation,
connect either header or
follower of the indoor
unit.
"Filter" lights up
"Prep" (Operation)
display
"Prep" (Heat) display