Toshiba RAS-5M51U2ACVG-SG Service Manual page 77

Check Outdoor
code LED display
* 
[1d] 

* *

[1E]
  * 
*

[1F] *  
:ON ( *:3 sec ON / 0.5 sec OFF) :OFF
(Item without special mention indicates part of outdoor unit.)
[Compressor lock]
Is AC mains voltage correct?
(198 to 264V)
YES
Is wire connection correct?
Compressor lead
(Board side, Compressor Side),
Reactor lead, Power supply lead.
YES
Is compressor under correct condition?
NO
Is there refrigerant stagnation?
YES
Does PMV correctly operate?
YES
[Discharge temp. error]
Is there gas leak?
Is there refrigerant shortage?
NO
Is PMV under correct conditions?
YES
Does an abnormal overload happen?
NO
Is connection of CN600 on P.C.B. WP-041?
Is resistance value of TD sensor correct?
YES
[Compressor break down]
Is AC mains voltage correct?
(198 to 264V)
YES
Is wire connection correct?
Compressor lead
(Board side, Compressor Side),
Reactor lead, Power supply lead.
YES
Does an abnormal overload happen?
NO
- 77 -
Check and troubleshooting
NO
NO
YES
Check outdoor P.C.B MCC-1571.
NO
NO
Check TE, TS sensors and PMV.
YES
NO
YES
NO
NO
NO
YES
Check wiring construction.
Ask repair of power supply.
Check wire connection
and correct it.
Defect → Replace.
Compressor lock → Replace.
Detect → Replace.
Check outdoor P.C.B WP-041.
Defect → Replace.
Repair defective position.
Recharge refrigerant.
Repair defective position.
Replace defective part.
Remove and improve
the cause of overload.
Correct connector.
Sensor error → Replace.
Check outdoor P.C.B WP-041.
Defect → Replace.
Check wiring construction.
Ask repair of power supply.
Check wire connection
and correct it.
Remove and improve
the cause of overload.
Check outdoor P.C.B
MCC-1571 Defect → Replace.