FOUND SYSTEM RUNNING HEAT PUMP AND BLOWER CONSTANTLY DUE TO FAILED ZONE CONTROL BOARD. CONTROL BOARD IS RECEIVING 24V POWER WITH NO DISPLAY PRESENT. NO CALL FOR HEAT PRESENT FROM EITHER THERMOSTAT, BUT 24V PRESENT AT EQUIPMENT TERMINALS Y AND G. NEED TO ORDER AND RETURN TO REPLACE ZONE CONTROL BOARD/INSTALL SURGE PROTECTOR. NO BYPASSING PERFORMED PER REQUEST. INVESTED IN ESA (1) SYSTEM. SCHEDULE AFTER REPAIRS ARE MADE.