Toshiba MMK-UP0051DHPL-E(TR) Service Manual page 22

No. Item
8
Freeze preven- (1) In cooling operation, the air conditioner operates as de-
tion control
(Low temp.
release)
(˚C)
(2) In cooling operation, the air conditioner operates as
Outline of specifications
scribed below based upon temp. detected by TC1, TC2 and
TCJ sensors.
To prevent the heat exchanger from freezing, the operation
stops.
• When "J" zone is detected for 5 minutes, the forced
thermo is OFF.
• In "K" zone, the timer count is interrupted, and held.
• When " I I I I I " zone is detected, the timer is cleared and the
operation returns to the normal operation.
• When the forced thermo-OFF became S0 with continua-
tion of "J" zone, operation of the the indoor fan in LOW (L)
mode until it reaches the " I I I I 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.
I
P1 a
K
Q1
J
described below based upon temp. detected by TC2 and
TCJ sensors.
• When "M" zone is detected for 45 minutes, the forced
thermo is 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.
(˚C)
L
P2
N
Q2
M
TC1 TC2, TCJ
P1 10°C (5°C) 10°C
Q1 0°C –14°C
TC2, TCJ
P2 5°C
Q2 –2.0°C
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Remarks