Self-Diagnosis
Self-Diagnosis:
Self Diagnosis
Self-Diagnosis - Checking Procedure (Part 1 Of 2):
Self-Diagnosis - Checking Procedure (Part 2 Of 2):
Checking Procedure
Self-Diagnosis - Step 1: Checks LEDs And Segments:
STEP 1: Checks LEDs and segments
When switch's LED and segments are in good order in STEP 1 mode, the corresponding LED and fluorescent display tube will illuminate.
Self-Diagnosis - Step 1: Checks LEDs And Segments:
If LEDs or segments malfunction, LED does not come on or display shows incomplete segment.
Self-Diagnosis - Step 2: Checks Each Sensor Circuit For Open Or Short Circuit:
STEP 2: Checks each sensor circuit for open or short circuit
Display shows 2 in STEP 2 mode.
When all sensors are in good order, display shows 20.
It takes approximately 4 seconds to check all sensors.
If a circuit is shorted, display shows ECON mark blinks on display.
Self-Diagnosis - Step 2: Checks Each Sensor Circuit For Open Or Short Circuit:
If two or more sensors malfunction, corresponding code Nos. respectively blink two times.
Self-Diagnosis - Sensors And Abnormalities:
Sensors and abnormalities
If a circuit is opened or shorted, display shows its code No. when input corresponds with any of following conditions.
Self-Diagnosis - Step 3: Checks Mode Door Operation:
STEP 3: Checks mode door operation
Display shows 3 in STEP 3 mode.
When all doors are in good order, display will then show 30.
It takes approximately 16 seconds to check all mode and intake doors
Self-Diagnosis - Step 3: Checks Mode Door Operation:
Self-Diagnosis - Step 3: Checks Mode Door Operation:
When abnormalities are detected, display shows a code No. corresponding with malfunctioning circuit, door position switch or motor.
If any mode and intake door motor position switch is malfunctioning, mode and intake door motor will also malfunction.
Self-Diagnosis - Step 3: Checks Mode Door Operation:
If two or more mode and intake doors are out of order, corresponding code numbers respectively blink two times.
Self-Diagnosis - Step 4: Checks Operation Of Each Actuator:
STEP 4: Checks operation of each actuator
Self-Diagnosis - Step 4: Checks Operation Of Each Actuator:
Self-Diagnosis - Step 5: Checks Operation Of Each Actuator:
Checks must be made visually, by listening to any noise, or by touching air outlets with your hand, etc. for improper operation.
Operating condition of each actuator cannot be checked by indicators.
Self-Diagnosis - Step 5: Checks Temperature Detected By Sensors:
Self-Diagnosis - Step 5: Checks Temperature Detected By Sensors:
STEP 5: Checks temperature detected by sensors
Display shows 5 in STEP 5 mode.
Self-Diagnosis - Step 5: Checks Temperature Detected By Sensors:
If temperature shown on display greatly differs from actual temperature: Check sensor circuit first, then inspect sensor itself according to the procedures described in Control System Input Components.
Self-Diagnosis - Auxiliary Mechanism:
AUXILIARY MECHANISM: Temperature setting trimmer