AX1500J(S)
6 – 8
6. EEO5 Engine high temperature failure
✩
Before starting the P.W.B. unit replacement, make sure to refer to “Before replacing the Printed Wiring Board” in page 2-2.
7. EE12 Engine thermistor failure
✩
Before starting the P.W.B. unit replacement, make sure to refer to “Before replacing the Printed Wiring Board” in page 2-2.
YES
YES
NO
NO
Measure the engine thermistor resistance using a tester with the thermistor connector
pulled out of the board.
Connect/repair the connector(s) or replace the
thermistor/harness.
The oven thermistor resistance is within its appropriate range.
Is the connectors between the engine thermistor, board and engine mounting section
disconnected or short circuited?
Replace the engine thermistor or the harness.
Replace the control unit and the engine unit
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
Measure the engine thermistor resistance using a tester with the thermistor
connector pulled out of the board.
Are there disconnection, breakage and short circuit in the engine heater
connections (the engine terminals and board)?
Is the engine heater normal to meet the following requirements?
Insulation resistance: One (1) M or more at 500 VDC
Dielectric strength: 1000 V for one (1) minute
Leakage current: 0.3 mA or less
Resistance (in cold condition): 15.05 to 16.21
Connect/repair the connector(s) or replace the
thermistor/harness.
The latch switch is in the door
open position.
Is there a voltage of 230 - 240V AC at
each terminal of the E thermostat?
Adjust the latch.
Replace the Engine
thermostat.
Is the connectors between the engine thermistor, board and engine mounting section
disconnected or short circuited?
Connect/repair the terminal(s) or replace the harness.
Replace the engine thermistor or the harness.
Replace the engine unit.
Replace the control board, the display board or the harness.
The engine thermistor resistance is within its appropriate range.
About 200 kW at
About 10 kW at
About 1 kW at
Is there a voltage of 230 - 240V AC between the engine heater terminals?
