Circuit Diagram And Circuit Explanation - Haier HR-6752D Service Manual

10.Circuit Diagram and Circuit Explanation

THERMOSTAT
L IN
L
OUT
L FILTER
N N
E IN OUT
N
Circuit description:
1. This is the mode that the door is open and the timer is not set yet.
2. Now set the time. The Timer Switch 1 is closed. The lamp is on. But the other parts do
not start because the door lock 1 and 2 are open.
3. Now close the door. The timer switch 1 and 2 are closed. There is voltage between the
two ends then starts working. The rotary tray , the fan start rotating. The lamp is on.
The timer motor also starts.
4. The function of the timer switch 2 is to control the power consumption by regular on/off.
5. The monitoring surface is used to offer protection in case that the lockout switch 1 and
2.
6. The thermostat offers protection against overheating in abnormal cases.
TIMER TIMER
SWITCH1 SWITCH2
M MF
THR SECOND
LOCKOUT SWITCH
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Circuit Diagram and Circuit Explanation
THR FRIST
LOOKOUT SWITCH
P
OUT)
DELAY
MT
CIRCUIT
SW T
IN)
HVC
AK
RECTIFIER