HD9040
2-6
Control Panel Inspection Instruction
Bread maker test program:
Press the “START/STOP” button during Mains connection, then release the “START/STOP” button.
The system enters into diagnosis status, the LCD shows “1229” which indicates the software version. Press any other button except
“START/STOP” to switch to other tests.
Press
Start/Stop
Button
LCD
shows
Which Indicates
Possible root cause
Replace
1
st
time
1
Motor is running
1. Wrong connection between PCB and
motor
2. Motor error
Motor assy or PCB
2
nd
time
2
Motor stops running
3
rd
time
3
Motor is running clockwise
1. Wrong connection between PCB and
motor
2. Motor error
Motor assy or PCB
4
th
time
4
Motor stops running
5
th
time
5
No functions
6
th
time
6
No functions
7
th
time
7
Heater start heating
1. Heater failure
2. PCB failure
Heating element or PCB
8
th
time
8
Heater stops heating
9
th
time
9
Heater and motor operate at
the same time
1. Heater failure
2. PCB failure
3. Motor error
10
th
time
10
Heater and motor stop
operating
In test 1 till 8 is OK
replace PCB
11
th
time
11
Buzzer starts
1. Buzzer inserts wrong or damage
2. PCB failure
PCB
12
th
time
12
Buzzer stops
13
th
time
13
Power indicater
Power indicator insert wrong or damage;
Replace control panel
14
th
time
14
Power indicater
15
th
time
15
All LCD contents will be on
1. LCD failure
2. PCB failure
Control panel assy
16
th
time
16
All LCD contents will be off *
1. LCD failure
2. PCB failure
Control panel assy
17
th
time
17F1
F1” indicates the AD value for
the temperature of the sensor
If room temp is among 35-20-10, the AD
value will be among
EA
~F5~F8, if the room
temp out of spec, AD value will out of range
EA
~F5~F8. **
Root cause might be: PCB failure / Temp
sensor
PCB or Temp sensor
18
th
time
18 8E
AD value for temperature
sensor sampling should be in
room temperature
If the temperature is between 35-20-10
degrees, the AD value should be between
73~9E~b5.
Attention, if the room temperature is not in
this scope, the AD value is out of spec. **
Root cause might be: PCB failure / Temp
sensor
PCB or Temp sensor
One more
time press
It will return to software
interface and repeat cyclically
REPAIR INSTRUCTIONS
