Operation Logic - York YACT038-072 Installation Manual

Operation Logic

Compressor
Reversing Valve
Loop Pump
Load Pump
Aux Heater
Acc Relay
Diverting Valve
ECM Speed
T-Stat Signal
Damper
Auxiliary 1 - Out
Heating
STG1 STG2
On On
Off Off
On On
Off Off
Off Off
On On
Off Off
On On
Y1 Y1, Y2
Off Off
On On
AFFINITY COMBINATION INSTALLATION MANUAL
STG3 EMERG
On Off
Off Off
On Off
Off Off
Staged Staged
On Off
Off Off
On On
Y1, Y2, W W
Off On
On Off
25
Cooling
STG1 STG2
On On
On On
On On
Off Off
Off Off
On On
Off Off
On On
Y1, O Y1, Y2, O
Off Off
On On
Hot Water
Mode
Stg 2 On
Off
On
On
Off
Off
On
Off
HW
Off
On