Toshiba RAS-18SKHP-ES Service Manual page 56

[19 outdoor TD sensor error] (Heat pump model)
Is TD sensor
connected properly?
YES
Is TD sensor resistance value
(50 kΩ at 25°C) normal?
YES
[1E Discharge temp. error] (Heat pump model)
Is protective
controller such as discharge
thermostat normal?
YES
Is charged amount
of refrigerant normal?
YES
Is overload relay normal?
NO
Is TD sensor resistance value
(50 kΩ at 25°C) normal?
YES
NO
NO
Outdoor P.C. board is defective.
NO
Are wires connected
to connector properly?
NO
YES
NO
Outdoor P.C. board is defective.
– 55 −
FILE NO. SVM-09036
Connect connector
properly.
Replace TD sensor.
Replace P.C. board.
NO
Connect wires to
connector properly.
Check and modify charged
amount of refrigerant.
Unit operates normally.
Replace TD sensor.
Replace P.C. board.