Mitsubishi SRK25ZSP-W Service Manual page 15

2) If the temperature of 110ºC is detected by the sensor on the discharge pipe, then the compressor will stop immediately.
When the discharge pipe temperature drops and 3 minutes has elapsed, the unit starts again within 1 hour but there
is no start at the third time.
(k) Current safe
(i) Purpose
Current is controlled not to exceed the upper limit of the setting operation current.
(ii) Detail of operation
Input current to the converter is monitored with the current sensor fixed on the printed circuit board of the outdoor
unit and, if the operation current value reaches the limiting current value, the compressor speed is reduced.
If the mechanism is actuated when the compressor speed is less than 30 rps, the compressor is stopped immediately.
Operation starts again after 3 minutes.
(l) Current cut
(i) Purpose
Inverter is protected from overcurrent.
(ii) Detail of operation
Output current from the inverter is monitored with a shunt resistor and, if the current exceeds the setting value, the
compressor is stopped immediately. Operation starts again after 3 minutes.
(m) Outdoor unit failure
This is a function for determining when there is trouble with the outdoor unit during air-conditioning.
The compressor is stopped if any one of the following in item (i), (ii) is satisfied. Once the unit is stopped by this func-
tion, it is not restarted.
(i) When the input current is measured at 1 A or less for 3 continuous minutes or more.
(ii) 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.
(n) Indoor fan motor protection
When the air-conditioner is operating and the indoor fan motor is turned ON, if the indoor fan motor has operated at 300
min or under for more than 30 seconds, the unit enters first in the stop mode and then stops the entire system.
-1
(o) Serial signal transmission error protection
(i) Purpose
(ii) Detail of operation
(p) Rotor lock
(p) Rotor lock
(q) Outdoor fan motor protection
(q) Outdoor fan motor protection
(r) Outdoor fan control at low outdoor temperature
(r) Outdoor fan control at low outdoor temperature
(i)
Cooling
(i)
Cooling
1) Operating conditions
1) Operating conditions
2) Detail of operation
2) Detail of operation
min
-1
min
-1
13
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Outdoor fan
Outdoor temperature > 10˚C
'18 • SRK-SM-259
Outdoor fan