Toshiba RAV-RM561FT-EN Service Manual page 63

[P19 trouble]
Is operation of 4-way valve normal?
(Check the pipe temp., etc.
during cooling/heating operation.)
Yes
Check outdoor temperature sensors.
TE sensor
TS sensor
Indoor TC sensor
Malfunction → Repair, replace
[F02 trouble]
Is connection of TC sensor connector
(CN101 on indoor P.C. board) correct?
Yes
Are characteristics of
TC sensor resistance value normal?
Yes
Replace indoor P.C. board
(MCC-1643).
[F01 trouble]
Is connection of TCJ sensor connector
(CN102 on indoor P.C. board) correct?
Yes
Are characteristics of
TCJ sensor resistance value normal?
Yes
Replace indoor P.C. board
(MCC-1643).
No
Are 1.3 to 1.6kΩ applied to
resistance value of 4-way valve coil ?
Check outdoor P.C. board operation.
(See the service manual of a
∗ Refer to TC Characteristics.
∗ Refer to TCJ Characteristics
(Temperature-Resistance value characteristic table)
Yes
connected outdoor unit.)
OK
Check 4-way valve.
Malfunction → Replace
No
No
No
No
– 63 –
No
Replace 4-way valve coil.
Malfunction
Check outdoor P.C. board.
Malfunction → Replace
Correct connection of connector.
Replace TC sensor.
Correct connection of connector.
Replace TCJ sensor.