Carrier TOSHIBA MMD-UP0071BHP-UL Service Manual page 26

NO. Item
Cold air 1. In heating operation, the upper limit of the fan tap is set according to the
discharge lower of whichever is the higher between TC2 sensor and TCJ sensor
prevention temperatures, on the one hand, and TC1 sensor temperature, on the
control other.
• If the fan continuously operates in zone B for 6 minutes, it automatically
• During defrosting, the control point is shifted by +6 °C.
(°F)
6
89.6
86
82.4
78.8
68
33.8
Freeze 1. During cooling, the air conditioner is operated in the manner described
prevention below according to the temperature readings of the TC1, TC2 and TCJ
control (low sensors.
temp. release)
• If zone J operation is detected for 5 minutes, the air conditioner is forced
• In zone K, the timer is put on pause, with the current timer count
• If zone I operation is detected, the timer count is cleared, and the air
• If continuous zone J operation forces the air conditioner into thermo OFF,
Termination conditions
1) TC1
2) 20 minutes passed after stop.
7
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
• In zone N, the timer is put on pause, with the current timer count
• When the air conditioner goes back into zone M, timer count is resumed
• If zone L operation is detected, the timer count is cleared, and the air
Reset conditions
1) TC1
2) 20 minutes passed after stop.
Specification outline
moves into zone C.
(°C)
32
D
30
C E
28
26
20
B
16
A
into thermo OFF.
retained.
conditioner returns to normal operation.
the indoor fan is operated in breeze mode until it moves into zone I.
The control is terminated under the following conditions:
53.6°F(12°C) and TC2
53.6°F(12°C)
TCJ
(°F)
(°C)
P1
K
Q1
J
forced into thermo OFF.
retained.
from the retained value.
(°C)
L
P2
N
Q2
M
conditioner returns to normal operation.
53.6°F(12°C) and TC2
A zone: OFF
B zone:
Over 78.8°F(26°C), below 82.4°F(28°C), ULTRA LOW (LL)
C zone:
Over 82.4°F(28°C), below 86°F(30°C), LOW (L)
D zone:
Over 86°F(30°C), below 89.6°F(32°C), MED (H)
E zone: HIGH (HH)
53.6°F(12°C) and
TC1 TC2, TCJ
a
50°F(10°C)(41°F)(5°C)
P1
32°F(0°C)
Q1
TC2, TCJ
41°F(5°C)
P2
28.4°F(–2.0°C)
Q2
53.6°F(12°C) and TCJ 53.6°F(12°C)
- 26 -
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
is displayed.
TC1:
Indoor heat
exchanger
sensor
temperature
14°F(-10°C)
6.8°F(-14°C)
* With models
without TC2,
TC2 is not
part of the
control
parameters.
"