Daikin M Series Service And Troubleshooting page 13

SYSTEM OPERATION
Pin Voltage
1 24VAC
2 24VAC
3 24VAC
4 24VAC
5 24VAC
6 24VAC
Indoor/Outdoor Thermostat (IDT/ODT) Output
High Stage Compressor Output
Pressure Switch/Loss of Charge Switch Input
Indoor/Outdoor Thermostat (IDT/ODT) Input
Pressure Switch/Loss of Charge Switch Output
Low Stage Compressor Output
Table 1: Circuit Definitions and Voltage Ratings
for the 6-Circuit Connector Circuits
Pin Voltage
1 24VAC
2 24VAC
3 24VAC
4 24VAC
5 24VAC
6 24VAC
7 24VAC
8 24VAC
9 Unused
Table 2: Circuit Definitions and Voltage Ratings
for the 9-Circuit Connector Circuits
Terminal
Line Voltage L1
Transformer Line L1
Air Circulating Blower Line 1
Induced Draft Blower Low Speed
Induced Draft Blower High Speed
Condenser Fan Motor Low Speed
Condenser Fan Motor High Speed
Line Voltage L2
Transformer Line L2
Air Circulating Blower Line 2
Induced Draft Blower Line 2
Condenser Fan Motor Line 2
Direct Spark Igniter
Flame Detection
Table 3: High Voltage Terminals
Function
Function
Limit Switch Output
24VAC Input to Control
Limit Switch Input
Unused
24VAC Common
Pressure Switch Output
Main Valve High Output
Pressure Switch Input
Main Valve Low Output
Label
L1
L1
L1
DI Low or "Inducer Low"
DI High or "Inducer High"
ODF Low
ODF High
L2
L2
L2
L2
L2
T1
FS
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