Toshiba RAS-3M26S3AV-E Service Manual page 76

Check Outdoor
code LED display
[1C]
(Continued)
(Item without special mention indicates part of outdoor unit.)
[A room gas side temp. sensor (TGa) error]
Is connection of CN604
on P.C.B MCC-5071 correct?
Is resistance value of TGa sensor correct?
YES
[B room gas side temp. sensor (TGb) error]
Is connection of CN605
on P.C.B MCC-5071 correct?
Is resistance value of TGb sensor correct?
YES
[C room gas side temp. sensor (TGc) error]
Is connection of CN606
on P.C.B MCC-5071 correct?
Is resistance value of TGc sensor correct?
YES
[Gas leak detection, PMV error]
Is there gas leak?
Is there refrigerant shortage?
NO
Is service valve fully opened?
YES
Is PMV under correct conditions?
YES
Is there crushed pipe?
NO
Check temp. sensor.
TS, TE, TG, TC
OK
Check and troubleshooting
NO
NO
NO
YES
NO
NO
YES
Error
- 76 -
FILE NO. SVM-15074
Correct connector.
→
Sensor error Replace.
Check outdoor P.C.B. MCC-5071.
→
Defect Replace.
Correct connector.
→
Sensor error Replace.
Check outdoor P.C.B. MCC-5071.
→
Defect Replace.
Correct connector.
→
Sensor error Replace.
Check outdoor P.C.B. MCC-5071.
→
Defect Replace.
Repair defective position.
Recharge refrigerant.
Open service valve fully.
Correct defective position.
Replace defective part.
Correct and replace piping.
Correct connector.
→
Sensor error Replace.
Check outdoor P.C.B. MCC-5071.
→
Defect Replace