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9.2.4 Auto-defrosting function in heating mode.
• If T3 (condenser pipe temperature) has been lower than 0°C for 40 minutes, the
function will be activated.
• The compressor will be ON while reverse valve and fan motor are OFF.
• If T3 (condenser pipe temperature gets over 20°C) or the defrosting time gets
to 10 minutes, the function will be cancelled.
• After that, the compressor will shut down immediately with the fan motor
starts. 35 seconds later, the reverse valve will be ON and the compressor will be
ON after another 3 seconds.
9.2.5 Temperature sensor is open circuit or short circuit.
Defect code Defect explanation
Er Indoor ambient temperature sensor failure.
En Evaporator pipe temperature sensor failure.
Eo Condenser pipe temperature sensor failure.
Ed Evaporator de-frosting defect.
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