83
14
Troubleshooting
Diagnostic procedure for check code
Check code
Operation cause
[17]
1. Defective wiring of inverter PC board
Current detection circuit alarm
2. Defective inverter PC board
Is wiring connector on inverter
PC board normal?
Modify connection of wiring
Check inverter PC board.
Yes
No
Check code
Operation cause
[18]
Outdoor heat exchanger sensor (TE)
short circuit
TE sensor open/short
TE1 sensor open/short has been detected. Confirm sensor is not disconnected (TE1 sensor: CN505), confirm
circuit and resistance value characteristics of sensor.
When the sensors are normal, replace outdoor PC board.
Check code
Operation cause
[1C]
1. Outdoor unit power source error
Extension IC, EEPROM short circuit alarm
2. Interface PC board error.
Is there an irregularity of outdoor
unit power source?
Check power source voltage.
Modify power source line.
Check noise interference from outside, etc.
Check interface PC board.
Yes
No
Содержание A90-0132
Страница 1: ...Modular Multi System Service Manual Air Conditioner Multi Split Type System A90 0132 HFC R407C ...
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Страница 176: ...www toshiba aircon co uk MADE IN UK A90 0132 Revised June 2002 ...