Toshiba MMW-AP0481CHQ-E Service Manual page 71

Check code Check code name
Reversal of inlet water
temperature and outlet water
[A08]
temperature
(H-HWM)
Are connections of
inlet water pipe and
outlet water pipe
normal ?
YES
Are characteristics of
TWI (TA) and TWO
(TC2) sensor normal ?
YES
Is connector connection
between TWI (TA) or
TWO (TC2) and control
P.C. board normal ?
YES
Are TWI (TA) or TWO
(TC2) sensor position
normal ?
YES
H-HWM TWI (TA) sensor trouble
H-HWM TWO (TC2) sensor trouble
H-HWM control P.C. board trouble
Reversal of inlet water connection and outlet
water connection
NO
NO
NO
NO
– 71 –
Cause
H-HWM TWI sensor and TWO
sensor are exchanged
Exchange watar pipes.
Exchange TWI (TA)
and TWO (TC2) sensor.
Repair failure parts.
Exchange sensor
position.
Check H-HWM control
P.C. board.
Failure → replace