214
(l)
Compressor lock
If the motor for the compressor does not turn a half a turn approximately 0.3 seconds after it has been started, it is determined
that a compressor lock has occurred and the inverter is stopped.
(m) Compressor dome thermistor broken wire protection control
1)
When the outdoor unit speed is other than 0 rps and after the compressor has started to operate, if after 10 minutes there
is a compressor dome thermistor temperature10-second interrupt signal (less than 7
°
C), it is immediately placed in
stop mode and restarted. (This detection is only performed once when the compressor is on.)
2)
If an error continues for 4 times continuously, a permanent stop is made. (Restoration requires resetting the power
supply.)
(n)
Outdoor unit failure
This is a function for determining when there is trouble with the outdoor unit during air conditioning.
The inverter is stopped if any one of the following in item 1), 2) is satisfied. Once the unit is stopped by this function, it is not
restarted.
1)
When the input current is measured at 1 A or less for 3 continuous minutes or more.
2)
If the outdoor unit sends a 0 rps signal to the indoor unit 3 times or more within 20 minutes of the power being turned on.
(o)
Stop mode (Decision speed is 0 rps, when the protection function for the outdoor controller is operating,
when restarting due to operation change)
(10) Regulation of outdoor air flow
(a)
The fan operates as follows according to the speed of the outdoor unit. (Except during defrost.)
(b)
If the outdoor unit fan motor speed is 300 rpm or less for 30 seconds or more continuously, the compressor and outdoor unit
fan are stopped.
Functional
components
Operation
Outdoor unit
speed
Actual operating
speed
Outdoor unit fan
E EVA
4-way valve
E EVB
Cooling
Heating
Operation of outdoor unit protection function, if restarting
when recovering from thermostat stop and switching operations.
If stopping due to an indoor unit instruction and if permanent stop.
Cooling
Heating
Stop instructions
All stop
Stop instructions
All stop
0 rps instructions
Restart
Stop instructions
Restart
Decision
rps
0
Outdoor
rps
0
According to
outdoor rps
0
ON
OFF
EEV
control
Fully
closed
EEV
control
Fully
closed
3 min.
3 min.
3 min.
2 min.
2 min. 25 sec.
200 pulse
200 pulse
55 sec.
3 min.
3 min.
3 min.
2 min.
2 min. 25 sec.
200 pulse
200 pulse
2 min.
55 sec.
2 min. 25 sec.
200 pulse
200 pulse
2 min.
2 min. 25 sec.
200 pulse
200 pulse
Outdoor unit speed
Outdoor fan speed
Fuzzy auto
when starting
1st speed
Less than 80
2nd speed
80 or more and
less than 100
3rd speed
100 or more
and less than 120
4th speed
120 or more
5th speed
