Toshiba MMW-AP0481CHQ-E Service Manual page 72

Check code Check code name
Mixed refrigerant
(H-HWM)
[A09]
Are characteristics of
TE sensor normal ?
YES
Are characteristics of
low-pressure (PS)
sensor normal ?
YES
Is H-HWM I/F P.C.
board normal ?
YES
H-HWM TE sensor trouble
H-HWM low-pressure (PS) sensor trouble
H-HWM I/F P.C. board trouble
Mixed refrigerant (R134a, R410A)
NO
NO
NO
– 72 –
Cause
H-HWM cascade heat exchanger trouble
Exchange TE sensor.
Exchange low-pressure
(PS) sensor.
Replace H-HWM I/F
P.C. board.
Check amount of H-HWM
R134a refrigerant.
In case of there is more
recovered amount of
refrigerant than the initial
amount of refrigerant,
exchange cascade heat
exchanger after
recovering all the
refrigerant.