Toshiba MMD-UP0481HFP-UL Service Manual page 22

NO. item
8 Cold air (1) Under HEAT operation, the higher temperature of TC2 sensor and TCJ sensor
is compared with temperature of TC1 sensor then lower temperature is used to
discharge
prevention set the upper limit of the fan tap.
Under defrosting operation, the control point is set to +10.8°F(+6°C).
control
(°F)
(°C)
1. In all cooling operation, the air conditioner operates as described below
Freeze prevention
9
control
(Low temp. release)
Reset conditions
1) TC1
2) 20 minutes passed after stop.
2. In all cooling operation, the air conditioner operates as described below
Reset conditions
1) TC1
2) 20 minutes passed after stop.
Outline of specifications
based upon temp. detected by TC1, TC2 and TCJ sensors.
When "J" zone is detected for 5 minutes, the thermostat is forcedly off.
•
In "K" zone, the timer count is interrupted, and held.
•
When "I " zone is detected, the timer is cleared and the operation returns to
•
the normal operation.
If "J" zone continues, operation of the indoor fan in LOW mode continues
•
until it reaches the "I " zone. It is reset when the following conditions are
satisfied.
54°F(12°C) and TCJ
(°F)
(°C)
P1 a
50°F(10°C)(41°F)(5°C)
P1
K
Q1
J
Q1
based upon temp. detected by TCJ sensor.
• When "M " zone is detected for 45 minutes, the thermostat is forcedly off.
• In "N" zone, the timer count is interrupted and held.
• When shifting to "M" zone again, the timer count restarts and continues.
• If "L " zone is detected, the timer is cleared and the operation returns to
normal operation.
54°F(12°C) and TCJ
(°C)
L
P2
N
Q2
M
A zone : OFF
E zone: follow a remote control
fan speed setup
54°F(12°C)
TC1 TC2, TCJ
14°F(-10°C)
7°F(-14°C)
32°F(0°C)
54°F(12°C)
TC2, TCJ
41°F(5°C)
P2
28°F(–2.0°C)
Q2
- 22 -
Remarks
TCJ : Temperature
of Indoor heat
exchange sensor
In zone A,
"PRE-HEAT" is
displayed.
TC1: Temperature of
indoor heat
exchanger sensor
Reset conditions
( ) value:
When the power supply
is turned on, the forced
thermostat becomes
OFF if the temperature
is less than this
indicated temperature.