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Electra OU10-47T ST Manual de servicio Pagina 39

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CONTROL SYSTEM
11-4
SM SAFRPM 1-A.0 GB
B. After the compressor cumulative operation time exceeds 120 minutes and the temperature of
the IPT is less then 35
O
C for 2 minutes. When the defrosting operation time on this condition
exceeds 8minutes, it will terminate.
C. After the compressor operation continuously for 20 minutes and the IPT is less than 23
O
C or
from the last time of defrosting operation is 50 minutes or more intervals. When the defrosting
operation time on this condition exceeds 10 minutes, it will terminal.
2. When the JC isn’t connected on the PCB
When the conditions of a) or b) is satisfy, the defrosting operation starts.
a) Have the outdoor sensor on the outdoor unit: Under the heating operation, the compressor
cumulative operation time exceeds 50minutes and the temperature of the outdoor pipe temperature
sensor reads lower than -4
O
C
b) No the outdoor on the outdoor unit: Under the heating operation, the compressor cumulative
operation time exceeds 50 minutes, if the indoor pipe temperature sensor reads lower than 40
O
C
continuously for 2minutes.
3. Defrost terminating conditions
When the condition c) or d) is satisfy, the defrosting operation will terminal.
c) The outdoor defrost sensor reads 15
O
C or more.
d) The defrosting time exceeds 10 minutes.
11.6 “FAN” mode operation
The indoor fan motor always turns on at the set speed and the vane motor turns on at
the set fettle.
11.7 4-way valve control
CONTENTS
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