Sharp AH-S22AW2 Service Manual page 18

AH-S22AW2
AH-S25AW2
2-4 Power transistor module protector
If the temperature of the chips in the power transistor module exceeds 105 °C, the compressor is stopped.
In this case, the outdoor fan does not stop, and when the temperature of the chips in the power transistor module
decreases to 105 °C 170 seconds seconds after operation is stopped, 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.
2-5 Serial signals
(1) Serial signals consist of all 96-bit signals.
(2) If the outdoor unit does not receive a serial signal, it will stop approximately 30 seconds later.
Note that this is true only of normal operation; in test mode, it does not stop and operation takes place based on the
test mode commands.
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