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HVAC Fuel Fired Heater Service Training 25 Fuel Fired Heater On-board diagnostic system • A self test/combustion test procedure, and lockout reset procedure have been added • PID and simulation item tables have been added to the workshop manual • A symptom troubleshooting index for the fuel fired heater has been added to the
Combustion test 1. Connect the SST (WDS or equivalent) to the vehicle DLC-2 16-pin connector "Guided Diagnosis" function 3. Perform the KOEO Self Test/Combustion Test Perform the DTC reading procedure after the water heater unit stops operating
Lockout reset (using WDS) 1. Connect the SST (WDS or equivalent) to the vehicle DLC-2 16-pin connector
Lockout reset (not using WDS) For factory equipped water heater unit 1. Turn the ignition switch to the OFF position
For vehicles with a transmitter or timer 1. Turn the ignition switch to the OFF position seconds 3. Re-install the power supply 40 A fuse seconds 6. Re-install the power supply 40 A fuse |