Sharp AE-XM24HR, Service Manual

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AEXM24HR
2 – 4
(3) During defrosting
When defrosting begins, the compressor stops.
Approximately 1 minutes later, the compressor reactivates in the
refrigeration cycle, and the outdoor heat exchanger is defrosted.
Each mode is as follows:
The outdoor fan is stopped
The operating frequency is as shown in the table below
The indoor fan is stopped
All expansion valve are open.
for 5 minutes 3900 rpm
after that 3700 rpm
(4) Defrost stop
When defrosting time exceeds 10 minutes
When the temperature of the outdoor heat exchanger rises above
approximately 15
°
C .
Defrost stop is determined by either of the above conditions,
and the compressor is stopped.
At the same time, the outdoor fan go ON.
The compressor is reactivated in the heating cycle 1 minutes after
it was stopped, and normal control resumes.
1.12. Power factor module Output voltage
If a voltage error over 450V is detected at power factor module output
voltage, the compressor is stopped for 3 minutes. In this case, the out-
door fan does not stop, for 3 minutes, and another try will be made.
Three retries are allowed. On the fourth retry, a complete stop request
signal is sent to the indoor unit, and the outdoor unit will remain
stopped until reset is performed. At this time, the 3 minute delay for
control of the outdoor unit will not function; therefore, do not cancel by
removing the plug and cutting the power.
.
More than
20 min.
More than
20 min.
Defrosting
Max. 10 min.
Heating
operation
start
Defrosting
Max. 10 min.
More than
20 min.