Daewoo DSC-1245FL Service Manual page 12

conditions, the fan speed is regulated according to the coil temperature within 2 min, 2 min later the
indoor fan motor stops. If the compressor starts up within 2 min, then operating according to Figure 5.
Under heating process, while the compressor stop (including stopping for protection), the fan motor's
operation (including stopping the indoor fan motor) is regulated according to the coil temperature within
1min, 1min later the fan will be stopped forcibly.
b. When the indoor fan motor running at a low-speed under cold air prevention operation, once
auxiliary electric heating works, the vane immediately withdraws from the cold air prevention location
and turn back to normal vane angle. While auxiliary electric heating stops, indoor fan motor goes on to
run at low-speed accordingly, the vane turns to cold air prevention location
Stop the fan motor
10.2 Failure code
The following table shows the fault protections.
When failures happens, the PCB alarms and buzzer rings three times, Failure code shows on
display board, and the PCB operates protection procedures.
Failure code: For the machine with LED display (88), the code shows on LED, for machine without
LED, the code reflects by the running light.
Failure
RT Sensor Failure
IPT Sensor Failure
Indoor Fan Motor Failure
While failure happens, the code displayed statically, if there are several failure codes reported at the
same time, then failure codes appears by turns every eight seconds correspondingly.
a. Sensor's failure protection: when the sensor tested temperature out of the range ---
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50°C≤T≤110°C, sensor failure is determined.
Once RT and/or IPT sensor failure appears, the compressor stops, and indoor and outdoor fan motors
shut off. Remote controller doesn't response to any signal except for shutdown. During failure the
machine can run in fan mode. After the failure is settled, the PCB restores to standby status.
b. Failure protection of Indoor PG fan motor: If there is no feedback signal of rotated speed within 5s,
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Air Conditioner Service Manual
Set fan speed
34°C
25°C
Figure 5 Cold air prevention
Running Light Flash
Once / cycle
Twice / cycle
6 times / cycle
Set fan speed
32°
27°
23°C
Stop the fan motor
LED Display (88)
E1
E2
E6
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