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Contents
CONTROL ASSEMBLY LAYOUT ............................................................................................ 3
CONTROL ASSEMBLY LEGEND ............................................................................................ 4
REMOVING BLOWER/CONTROL ASSEMBLY ...................................................................... 5
TROUBLESHOOTING .............................................................................................................. 5
Smart/WiFi thermostat not working properly ...................................................................................... 5
Thermostat call error ............................................................................................................................ 6
Fan not running ..................................................................................................................................... 6
Fan runs for cooling but not for heating ............................................................................................... 6
External pump does not run (sticking issue) ......................................................................................... 6
External pump does not run (electrical issue) ...................................................................................... 7
External pump is noisy at start-up ........................................................................................................ 7
Water heater temperature and pressure relief valve is weeping ........................................................ 7
Insufficient or no heat ........................................................................................................................... 7
Cold water at hot faucet ....................................................................................................................... 7
Heating during standby mode .............................................................................................................. 8
Pump and fan run continuously (test mode off and no call for heat/cool) .......................................... 8
Constant Pressure Sensing (CPT™) not working
................................................................................... 8
Final Assembly
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Exploded View ......................................................................................................... 10
Electrical Box
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Exploded View ........................................................................................................... 11
Blower & Heating Coil
–
Exploded View ............................................................................................. 12
Replacement Parts .............................................................................................................................. 13
All technical information subject to change without notice.
