Toshiba MMY-MAP0804HT8-E Service Manual page 73

NO. Item
Cold air
discharge
prevention
control
6
Freeze
prevention
control (low
temp. release)
7
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1. In heating operation, the upper limit of the fan tap is set according to the lower of
whichever is the higher between TC2 sensor and TCJ sensor temperatures, on
the one hand, and TC1 sensor temperature, on the other.
• If the fan continuously operates in zone B for 6 minutes, it automatically moves
into zone C.
• During defrosting, the control point is shifted by +6°C.
(°C)
32
D
30
C
28
26
20
16
1. During cooling, the air conditioner is operated in the manner described below
according to the temperature readings of the TC1, TC2 and TCJ sensors.
• If zone J operation is detected for 5 minutes, the air conditioner is forced into
thermo OFF.
• In zone K, the timer is put on pause, with the current timer count retained.
• If zone I operation is detected, the timer count is cleared, and the air conditioner
returns to normal operation.
• If continuous zone J operation forces the air conditioner into thermo OFF, the
indoor fan is operated in breeze mode until it moves into zone I.
The control is terminated under the following conditions:
Termination conditions
1) TC1 12°C, TC2 12°C, and TCJ
2) Passage of 20 minutes after stoppage
I
P1
(°C)
Q1
J
2. During cooling, the air conditioner is operated in the manner described below
according to the temperature readings of the TC2 and TCJ sensors.
• If zone M operation is detected for 45 minutes, the air conditioner is forced into
thermo OFF.
• In zone N, the timer is put on pause, with the current timer count retained.
• When the air conditioner goes back into zone M, timer count is resumed from
the retained value.
• If zone L operation is detected, the timer count is cleared, and the air conditioner
returns to normal operation.
(°C)
L
P2
N
Q2
M
Reset conditions
1) TC1 12°C, TC2 12°C and TCJ
2) Passage of 20 minutes after stoppage
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Specification outline
Zone A:OFF
Zone B:26 °C or above and
below 28 °C
E
Breeze
Zone C:28 °C or above and
below 30 °C
Low
Zone D:30 °C or above and
below 32 °C
Medium
B Zone E:High
A
12°C
TC1
P1 10°C(5°C)
a
K Q1 0°C
Temperature in ( ): If the temperature is below
this value when the power is turned on, the air
conditioner is forced into thermo OFF.
TC2, TCJ
P2 5
Q2 -2.0
12°C
72
Remarks
TCJ: Indoor heat
exchanger sensor
temperature
• In zones D and E,
priority is given to the
remote controller fan
speed setting.
• In zone A, "HEATING
STANDBY
displayed.
TC1: Indoor heat
exchanger sensor
temperature
TC2, TCJ
-10°C
-14°C
* With models without
TC2, TC2 is not part
of the control
parameters.
" is