Toshiba MD-VNK802HEXE, Service Manual

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27
17 Nighttime
heat purge
(Continued) 5) During nighttime heat purge operation
• The ventilation mode (fixed to Bypass mode) cannot be changed, and it is not
displayed.
• The ventilation fan speed can be changed with CODE No. (DN) [47].
6) Nighttime heat purge temporary stop condition (one-hour stop)
• Nighttime heat purge operation continues for an hour or TRA TOA or TRA TSA
or TOA TRA/10 + 12.5 °C or the outdoor unit operation mode is Heating
• After the nighttime heat purge operation has stopped temporarily and one hour has
passed, the temperature monitoring operation is performed. If Condition 4 is met, the
nighttime heat purge operation starts.
7) Nighttime heat purge stop (termination) conditions:
• The Air to Air Heat Exchanger with DX Coil Units start operation.
• 48 hours have passed since the start of nighttime heat purge operation (start of
temperature monitoring operation).
8) When nighttime heat purge operation stops, the [Nighttime heat purge] display goes
out.
18 Humidifying
control 1) The heating operation automatically turns on the magnetic valve to perform the
humidifying operation.
2) Magnetic valve ON conditions:
• The operation mode is Heating (default)
• Air Suction Temperature of direct expansion coil (TSA) >
Į °C
(Humidifying: Į = 9, Not humidifying: Į = 11)
• The humidifying operation cannot be restarted when the power is turned on or for 15
minutes after humidifying is stopped (default)
• (Judged by outdoor temperature (Invalid by default))
CODE No.
[08][BB][BD][BE][40]
No. Item Specification outline Remarks
SET DATA Setting
0 Low fixed (default)
1
Operate at ventilation fan speed set last time the
operation was stopped
TOA: Ou
td
oor air te
mperature (°C)
TRA: Return air temperature (°C)
Nighttime heat purge
disallowed
Undefined zone
Temperature setting: 25 °C
Nighttime
heat purge
allowed
Humidifying allowed
Humidifying disallowed
TSA