– 27 –
T+8
T+7
T+5
T+4
T+2
T+1
T
T-1
TO [˚C]
I
1 x a%
I
1 x b%
I
1 x c%
I
1 x d%
As
I
1
NOTIFICATION
It is not an abnormal phenomenon that electro-noise may be heard while heating the coil.
6. Short intermittent operation preventive control
The compressor may not stop for preventing the compressor for 3 to 10 minutes after start of the
operation even if Thermo-OFF signal has been received from the indoor. This phenomenon is not
abnormal. (Continuous operation time of the compressor differs according to the operating status.)
If the equipment is stopped from the remote controller, the operation does not continue.
7. High-pressure suppression TE control (Only for SM1101, SM1401)
This control suppresses that voltage becomes abnormally higher during cooling operation.
Stop the compressor under condition of TE
≥
67°C, and count 1 on the error count.
After 2 minutes 30 seconds passed, if TE < 67°C, the compressor restarts and the error count is
cleared when the operation continues for 10 minutes.
When TE
≥
67°C is detected again within 10 minutes, 1 is added to the error count and restart is
repeated.
If the error counts 10 are recognized, it is determined as an error and restart is not performed. Error
code ‘P04’ is displayed.
After restarting the compressor, continue controlling by using 70% to 90% of the control value of the
current release control for minimum 30 minutes.
8. Over-current preventive control
This control function stops the compressor when over-current preventive circuit has detected an
abnormal current.
The compressor restarts with error count 1 after 2 minutes 30 seconds.
If the error counts 8 are recognized, it is determined as an error and restart is not performed. Error
code ‘H01’, ‘H02’ or ‘P26’ is displayed.
9. Current release value shift control (Cooling and Dry operation)
1) Object: SM1101, SM1401
This control function prevents troubles of the electron parts such as G-Tr of inverter of compressor
drive system and troubles of the compressor during cooling operation.
This control function corrects the current release control value (
1
1) in item 7-2. by TO sensor value.
The value to be corrected is based upon the following control diagram and correction value table.
Corrected value
SM1101, SM1401
T
a
b
c
d
39°C
70%
80%
85%
90%
2) Object: SM561, SM801
The current release value of the models
above are selected from the right table
according to TO sensor value.
Current release value shift control
TO
45
≤
TO
40
≤
TO < 45
TO < 40
SM561
4.7
6.2
10.1
SM801
5.1
7.1
12.2
