12-15. E4
Is the AG thermistor connector (WH2) properly assembled?
YES
Is the resistance on both ends of AG heater 29.5 Ω ± 7 %?
(check if the heater is faulty.)
YES
Is the main PCB connector (BL12)
properly assembled?
YES
Replace the main PCB.
NO
NO
NO
82
Connect the connector.
Replace the AG.
Assemble the wiring properly.