Toshiba MXZ-2DM40VA Service Manual page 30

Indication
No. Symptom
LED1(Red) LED2(Yellow)
Outdoor unit
operates.
Lighted
21 5 times
22 8 times
Lighted
Outdoor unit
23 9 times
Lighted
operates
normally.
24
Lighted Lighted
NOTE: 1. The location of LED is illustrated at the right figure. Refer to 11-7.4.
2. LED is lighted during normal operation.
The flashing frequency shows the number of times the LED blinks after every 2.5-second OFF.
(Example) The flashing frequency is "2".
ON
2.5-second OFF
OFF
OBH739A
Abnormal point / Condition
Cooling high-pressure
The outdoor heat exchanger temperature exceeds 58°C during operation.
protection
Converter protection
A failure is detected in the operation of the converter during operation.
The connector of compressor is disconnected.
Inverter check mode
Inverter check mode starts.
Normal
0.5-second ON
2.5-second OFF
Condition
-
0.5-second ON
30
Remedy
This symptom does not mean any abnormality of the
product, but check the following points.
Check if indoor filters are clogged.
Check if refrigerant is short.
Check if indoor/outdoor unit air circulation is short cycled.
Check the voltage of power supply.
Replace the inverter P.C. board.
-
-
Outdoor display P.C. board (Parts side)
Lighted
LED1 LED2