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Indoor Unit Outdoor Unit CS-E9NKUAW CS ... - Panasonic

Indoor Unit Outdoor Unit CS-E9NKUAW CS ... - Panasonic

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16.4.17 H99 (<strong>Indoor</strong> Freeze Prevention Protection: Cooling or Soft Dry)<br />

Malfunction Decision Conditions<br />

� Freeze prevention control takes place (when indoor pipe temperature is lower than 35.6°F)<br />

Malfunction Caused<br />

� Clogged air filter of the indoor unit<br />

� Dust accumulation on the indoor unit heat exchanger<br />

� Air short circuit<br />

� Detection error due to faulty indoor pipe temperature sensor<br />

� Detection error due to faulty indoor unit PCB<br />

Troubleshooting<br />

64

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