The control system has detected open contacts at the Blower Prover air pressure switch after Blower has been energized.
PERFORMTURNEDALL THESE TESTS WITH POWER ON AND A CALL FOR HEAT ACTIVE.
Check for 120 VAC at the CCB’s J2 Socket (page 36) pins 1 & 2. Perform close visual inspection of the pins inside the plug and socket – ensure plugs and sockets are mating properly and providing good contact.
Check all wiring between CCB’s J2 Socket pins 1 & 2 and the blower motor assembly’s high voltage 3 Pin Socket (see page 10). Disconnect the plug at the blower motor assembly’s high voltage 3 Pin Socket – check for 120 VAC at the plug end.
Perform close visual inspection of the pins inside the plug and socket at the blower motor assembly’s high voltage 3 Pin Socket – ensure plugs and sockets are mating properly and providing good contact.
Disconnect the plug at the blower assembly’s Low Voltage PWM 5 pin plug (see page 10). If the Blower has not been running prior and starts running when this plug is disconnected – call the technical support phone number shown on the water heater labeling for further assistance.
