36
No.
8
9
Item
Freeze prevention
control (Low temp.
release)
Outline of specifications
1. In all cooling operation, the air conditioner operates
as de-scribed below 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.
Reset conditions
1) TC1 > 12°C and TC2 > 12°C and TCJ > 12°C
2) 20 minutes passed after stop.
Remarks
TC1: Temperature of indoor
heat exchanger sensor
2. In all cooling operation, the air conditioner operates
as described below based upon temp. detected by
TC2 and TCJ sensors.
• 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.
Reset conditions
1) TC1 > 12°C and TC2 > 12°C and TCJ > 12°C
2) 20 minutes passed after stop.
P1
Q1
(˚C)
a
K
J
I
P2
Q2
(˚C)
L
N
M
( ) value:
When the power supply is
turned on, the Forced
thermo becomes OFF if the
temperature is less than this
indicated temperature.
P1
Q1
TC1
10°C (5°C)
0°C
TC2, TCJ
–10°C
–14°C
P2
Q2
TC2, TCJ
5°C
–2.0°C
∗
In a Model without TC2,
TC2 is not judged.
Recovery control
for cooling oil
(Refrigerant)
The indoor unit which is under STOP/Thermo-OFF
status or which operates in [FAN] mode performs the
following controls when it received the cooling oil
(Refrigerant) recovery signal from the outdoor unit.
1) Opens PMV of the indoor unit with a constant
opening degree.
2) Operates the drain pump for approx. 1 minute during
recovery control and after finish of control.
• Recovery operation is
usually performed every
2 hours.
