-
170
-
2) Anomalous discharge pipe temperature
a) If the discharge pipe temperature rises to 105°C or higher, the compressor is stopped [the outdoor unit fan motor
stops 1 minute later. If the temperature drops to 80°C or lower, the compressor restarts automatically.
b) If the anomalous discharge pipe temperature occurs 2 times in 60 minutes, or continues at 105° or higher for
60 minutes, including the time of compressor stopping, anomalous stop (E36) occurs.
Note (1) If the anomalous discharge pipe temperature continues for 45 minutes from the time it fi rst occurs and does not drop below 80°C,
the compressor cannot be operated again.. (It can be reset using the remote control unit.)
(ii) Current safe control
1) If the inverter primary current becomes higher than the set value, the compressor speed is reduced. If the current is
still above the set value after the speed is reduced, the speed is reduced again.
2) If the current value drops to the cancellation value continuously for 3 minutes, this control ends and the speed
protection cance operation is started.
(iii) High pressure control
1) Heating
a) If the indoor heat exchanger temperature (Thi-R) exceeds the set value mentioned in the following table, the
upper limit of compressor speed is reduced within the range of compressor speed mentioned in the following
table in order to control high pressure.
If the indoor heat exchanger temperature (Thi-R) detected by every 30 seconds sampling interval still exceeds
the set value, the upper limit of compressor speed is adjusted.
Compressor operates
Compressor stops
80
105
Discharge pipe temperature (˚C)
Indoor heat exchanger
control set value
Compressor speed (rps)
57
52
47
min. to control range less than 88
88 to less than 108
108 or more to max.
temperature (˚C)
cancellation value (˚C)
52
47
47
b) In case that the ambient temperature (detected by Tho-A) is 17°C or higher (under heating overload conditions),
the upper limit of compressor speed is reduced to 60 rps and the outdoor fan speed is changed to 2nd speed.
2) Cooling
a) If the outdoor heat exchanger temperature (Tho-R) exceeds the set value mentioned in the following table and
the ambient temperature (Tho-A) is 41°C or higher, the upper limit of compressor speed is reduced within the
range mentioned in the following table and the outdoor fan speed is set to 7th speed in order to reduce high
pressure.When the Tho-A becomes less than 40°C, only this fan speed control is cancelled.
Outdoor heat exchanger
control set value
Compressor speed (rps)
58.5
53.5
48.5
min. to control range less than 88
88 to less than 108
108 or higher to max.
temperature (˚C)
cancellation value (˚C)
53.5
48.5
43.5
b) If the outdoor heat exchanger temperature (Tho-R) exceeds the set value mentioned in the following table, the
compressor is stopped. When the Tho-R becomes less than 48°C, compressor restarts automatically.
If this trouble is repeated 5 times within a period of 60 minutes or the Tho-R exceeds the set value for 10 minutes
continuously including the time of compressor stopping, anomalous stop (E35) occurs.
Outdoor heat exchanger
temperature (˚C)
Compressor speed (rps)
65 or more
60 or more
55 or more
min. to control range less than 88
88 to less than 108
108 or more to max
