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Main Board
Outdoor
Thermistor(s)
Outdoor Fan Motor
Heater plug
Compressor
DLB Relay
J305 ICR
Pump
J304 Reversing
Valve Coil
AC Input plug
J101 voltage select jumper
• Jumper between 1 and 2
230V
• Jumper between 1 and 3
265V
This jumper provide voltage
to 24 VAC transformer and
must be in place for Zoneline
to function correctly.
Low Volt
Transformer