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A. Control Board Layout
1. Auxiliary Code C-0 and Earlier
• 115VAC Control Board Power Supply
U–115VAC Control Board Power Supply (BK)
V–Neutral (W)
• TH1 Connector
Thermistor
• B1 Connector
Hot Gas Valve
• X1 Relay
Hot Gas Valve
Pump Motor
Fan Motor
• TH2 Connector
Thermistor
• Control Transformer
• X2 Relay
Inlet Water Valve
• C1 Connector
115VAC X1 Relay Component Power Supply (hot gas valve, pump motor, fan motor)
• C2 Connector
115VAC X2 Relay Component Power Supply
(inlet water valve)
• A1 Connector
Pump Motor
Fan Motor
• A2 Connector
Inlet Water Valve
• Harvest Control
Do not adjust
• Freeze Control