Mitsubishi Heavy Industries FDCVA1002HESAR, Техническое руководство

Страница: 180 / 329

-
179
-
(iii) Defrosting end conditions
If any of the following conditions is satisfi ed, the defrosting operation fi nishes.
1) 8 minutes and 20 seconds have passed since defrosting started. (In models 302, 802 and 1002, 10 minutes and 20
seconds have passed.)
2) When the outdoor heat exchanger temperature (sensed by Tho-R1, R2, whichever one senses the lower temperature)
is 12°C or higher continuously for 10 seconds.
(g) Compressor protective control
( i ) Discharge pipe temperature control
If the dischage pipe temperature (Tho-D) becomes higher than the set temperature during compressor operation, the
compressor speed is reduced to cool it down.
1) Compressor speed control
2) Anomalous stop by the discharge pipe temperature
a) If the discharge pipe temperature has risen to 115 (135) °C or higher, the compressor is stopped. If it drops to
85 (90) °C or lower, the compressor restarts automatically.
b) If the condition a) occurs 2 times within 60 minutes, or the temperature is kept at 115 (135)°C or higher for 60
minutes continuously, anomalous stop (E36) occurs.
Note (1) If the temperature does not drop to 85 (90) °C or lower continuously for 45 minutes after a discharge pipe temperature error occurs,
operation cannot be restarted. (This can be set using the remote controller.)
(ii) Power transistor temperature control
If the power transistor temperature (Tho-TR) rises to 85°C or higher, the compressor speed is controlled. If the power
transistor temperature drops to 81°C or lower, this control ends and the speed protection cancel operation starts.
100 (105) 105 (110)
Reset
Retention
The speed is reduced once every minute
Discharge pipe temperature (˚C)
Note (1) Values in the bracket show the one for 802 and 1002 models
85 (90) 115 (135)
Compressor operation
Compressor stops
Discharge pipe temperature (˚C)
Note (1) Values in the bracket show the one for 802 and 1002 models
81 85
Reset
Retention
The speed is reduced once every minute
Power transistor temperature (˚C)