Toshiba MD-VNK802HEXE, Service Manual

Page: 27 / 214

25
12 Automatic
mode control
(Continued) 3)
"
Heat
"
2) If the operation mode is changed, the Heat Exchange mode continues for 10
minutes.
3) If the operation mode is changed, the current mode continues for 10 minutes.
4) The thermo is turned off forcedly if the mode changes to the Bypass mode in "Cool",
"Dry", or "Heat".
13 Cool air
discharge
protection
control 1) In Heat operation, the upper limit of the ventilation fan speed is determined by lower
temperature of higher temperature of TC2 sensor or TCJ sensor or temperature of
TC1 sensor.
"Prep" appears when in
Low zone.
14 Freeze
protection
control
(Low
temperature
release) 1) In Cool operation, the operation is performed depending on the temperature
detected by TC1, TC2, or TCJ sensor.
• The thermo is turned off forcedly if the "J" zone is detected for 5 minutes.
• The timer count is stopped and retained when in "K" zone.
• If the "I" zone is detected, the timer is cleared and the normal operation restarts.
• If the thermo is turned off forcedly to maintain the "J" zone, only the fan is operated until
it enters the "I" zone.
Recovered in the following conditions:
Recovery conditions
1) TC1
12 °C and TC2 12 °C and TCJ 12 °C
2) 20 minutes have passed since it stopped
No. Item Specification outline Remarks
TOA: Outdoor air temperature
(°C)
TRA: Return air temperature (°C)
Undefined
zone
Heat exchange
Bypass
Temperature setting: 25 °C
Bypass
Undefined
zone
High
Low
( ) : The thermo is turned off forcedly if
the temperature is lower than this
value when the power is turned on.
TC1 TC2, TCJ
P1 10 °C (5 °C) -10 °C
Q1 0 °C -14 °C