Electrical Control - Haier HSU-12HSA03 Service Manual

3. Electrical control

. Scope of Application
This specification use for HSU-09/12HSA03/R2 DB frequency conversion air condition are manufactured
by Haier air condition parent company. "Setting value" (express in parameter) in this specification
means is a parameter that is stored in EEPROM. Refer to [EEPROM parameter table].
1. Chip pin definition
This controller adopts MOTROLA MC68HC908 AB32; Chip each pin definition as following:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26 PA0 selection panel 1
27 PA1 high/low drive model
28 PA2 large/small model
29 PA3 A/B code selection
30 PA4 panel selection 2
31
Haier air conditioner
PTC4
IRQ
RST
PTF0/TACH2
PTF1/TACH3
PTF2/TBCH2
PTF3/TBCH3
PTF4/TBCH0
NC
PTF7
PTF5/TBCH1
PTF6
PTE0/TXD
PTE1/RXD
PTE2/TACH0
PTE3/TACH1
PTE4/SS
PTE5/MISO
PTE6/MOSI
PTE7/SPSCK
VSS
VDD
PTG0/KBD0
PTG1/KBD1
PTG2/KBD2
PA5
door switch
over-zero detection
remote control receiving
SDA
SCL
Buzzer
Swing stepping motor A
Swing stepping motor D
Swing stepping motor B
Swing stepping motor C
network output
network output
PG feedback
PG output
fresh air
negative ion output
self check/ decrease time
empty
GND
VCC
ultraviolet ray A
empty
empty
sliding stepping motor A
sliding stepping motor B
sliding stepping motor C
sliding stepping motor D
pushup stepping motor A
pushup stepping motor B
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Edition: 20070116