Microtech 2300 - Replacing Unit Controller; Configuration DIP Switches

REPLACING UNIT CONTROLLER
MICROTECH 2300 UNIT CONTROLLERDAIKIN APPLIED
6
Replacing Unit Controller
1. Connect wrist strap to unit.
2. Remove faulty board and place on static protected surface.
3. Remove replacement unit controller from static protection
bag.
NOTICE
Hold circuit board by edges to avoid static damage of circuit board components.
4. Holding unit controller in grounded hand, install controller
in unit.
5. Insert faulty board in empty static bag for return.
Conguration DIP Switches
Figure 2: Location of conguration DIP Switches on the
MT2300 Unit Controller
R
R
H7
H7
H8
H8
H1
H1
LED
LED
FM
FM
SP
SP
RM
RM
GND
GND
LED
LED
FM
FM
SP
SP
RM
RM
GND
GND
TB3
TB3
TB2
TB2
TB1
TB1
E
E
E
E
U
U
U
U
W2
W2
W1
W1
Y2
Y2
Y1
Y1
G
G
C
C
R
R
W2
W2
W1
W1
Y2
Y2
Y1
Y1
G
G
C
C
MT2300
MT2300
PART# 910384405
PART# 910384405
H3
H3
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
H4
H4
RY/FAN_HIGH
RY/FAN_HIGH
RY/FAN_EN
RY/FAN_EN
RY/PUMP
RY/PUMP
CAUTION
The MT2300 unit controller incorporates static sensitive devices. A static
charge from touching the device can damage the electronic components. To
help prevent damage during service, use static discharge wrist straps. Static
discharge wrist straps are grounded to the heat pump chassis through a 1M
ohm resistor.