Haier AP48KN1EAA - Page 35

Single Split
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Indoor ambient temperature sensor: Mainboard checks that the sensor is in open circuit, short
circuit or close to short circuit for 2 minutes continuously, the mainboard will conrm that sensor is
failure, the system will stop running, alarm occurs; If the signal is resumed, the system will resume
automatically. Indoor coil temperature sensor: Mainboard checks that the sensor is in open circuit,
short circuit or close to short circuit for 2 minutes continuously, the mainboard will conrm that
sensor is failure, the system will stop running, alarm occurs; If the signal is resumed, the system
will resume automatically.
Shield indoor coil temperature sensor failure in 3 minutes before compressor start and during
defrost procedure (include defrost nish and quit).
3.9 Low pressure switch control
In standby state,detecting the pressure switch off for continued 30s alarm error;
In cooling,the compressor start up and enter pressure signal detecting
In heating ,after the compressor start up for 3 minute,enter pressure signal detecting; When defrosting,
doesn't detect pressure signal; In 30 minutes, it occurs 3 times, the system will alarm error
Other detecting the low pressure switch off maintain 30s alarm error.
3.10 Fault record query
It can be stored ve historical faults in EEPROM,included outdoor fault. Five fault has always been the
recent 5 records.Only record the fault that different with the recent fault
Operation:
In cooling mode, press the sleep butten 8 times, enter the fault record query, the error code is the recently
fault,if the unit is in malfunciton state,the error code is the last fault,the display mode is same with the fault
indicator.If press the other button of the remote controller,exit the fault record query.
Repeat the operation with remote controller can cancel fault indicator.