Toshiba RAS-13NKV-E Service Manual page 37

2) Defrost operation
Operation of the compressor is stopped once,
turn off power coupler for 4-way valves after
10 seconds, and then exchange the 4-way
valves.
After 20 seconds, restart operation of the
compressor. Turn off the outdoor fan just when
the compressor stopped.
If temperature of the indoor heat exchanger
lowered than 38 °C , stop the indoor fan.
3) Defrost reset
Resetting operation from defrost to heating is
performed when anyone of the following
conditions is satisfied.
a. Temperature of the outdoor heat exchanger
rose to +8 °C or higher .
b. A status that temperature of the outdoor
heat exchanger is +5 °C or higher contin ued
for 80 seconds.
c. Defrost operation continued for 15 minutes.
In resetting defrost operation, the compressor
stops for 50 seconds if defrost has started under
condition a. to c. in item1), but the compressor is
reset to heating operation keeping operated if
defrost has started under condition d. in item 1).
(5) Louver control
When the compressor is turned off by high-temp.
release control, the vertical air flow louvers close
once and then return to the position of previous
time.
(6) ECONO operation control.
When the [ECO] button is pushed, ECONO
operation is performed by restraining air flow and
compressor moter speed.
1) The indoor fan speed is controlled within L-
as maximum speed.
2) Compressor motor speed is controlled by the
difference value of room temperature and set
temperature as shown in Fig. 8-2-10
The different value of room temperature and
set temperature are separated to A, B and
C zone. Then compressor motor speed in each
zone are controlled by different speed.
After 30 minutes passed, the different value of
room temperature and set temperature is
separated zone again by more different value
than before. Then compressor motor speed
after 30 minute passed is lower than before by
the same different value of room temperature
and set temperature.
0.0 A-Zone
-0.5
-1.0
-1.5 B-Zone
-2.0
-2.5
C-Zone
-5.0
-5.5
-11.0
-11.5
30 Min
(7) COMFORT SLEEP operation control.
When the [COMFORT SLEEP] button is pushed,
the ECONO operation actrvate together with the
timer OFF function. Each time of pressing
[COMFORT SLEEP] button the off timer setting
changes in the sequence of 1, 3, 5 or 9 hours.
(8) Hi POWER operation control.
When the [Hi POWER] button is pushed Hi Power
operation is performed by changing setting
temperature and air flow (display on the remote
control does not change).
1) Changing of setting temperature.
+4.0
+3.5
+3.0
+2.5
+2.0
+1.5
15
Hi Power
Start
2) Changing of air flow (Fan setting : AUTO)
When the Hi POWER is started, the fan of the
indoor unit operates at higher air flow level than
normal air flow AUTO (normal air flow AUTO is
shown in Fig. 8-2-7). Because of the difference
between room temperature and setting
temperature are increased automatically.
3) Changing of air flow (Fan setting : One of 5 levels)
When the Hi POWER is started, the fan of the
indoor unit operates at higher consecutive air
flow level. (Fan speed on the display of remote
control does not change)
- 36 -
FILE NO. SVM-05027
Zone 13NAV
A-Zone
A 20 rps
B-Zone
B 20-45 rps
C-Zone C 45 rps
Time
Fig. 8-2-10
30 45 60 and After
Fig. 8-2-11
16NAV
13 rps
13-43 rps
43 rps
Time (min)