62
14
Troubleshooting
Diagnostic Procedure for Check Code
Is wiring connector on
inverter P.C. board normal
?
Check inverter P.C. board.
No
Yes
Modify connection of wiring
Is there an irregularity of
outdoor unit power source
?
Check interface P.C. board.
Yes
No
Check power source voltage.
Modify power source line.
Check noise interference from outside, etc.
Check code
Operation cause
[17]
1. Defective wiring of inverter P.C. board
Current detect circuit system alarm
2. Defective inverter P.C. board
Check code
Operation cause
[18]
TA sensor open/short
TE1 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 P.C. board.
Check code
Operation cause
[1C]
1. Outdoor unit power source error
Extension IC, EEPROM alarm
2. Interface P.C. board error
Summary of Contents for MM-A0160HX
Page 1: ...Service Manual Air Conditioner Multi Split Type System Modular Multi System HFCR407C A90 0130 ...
Page 2: ......
Page 133: ...134 20 Additional Literature and Contacts ...
Page 134: ...135 20 Additional Literature and Contacts ...
Page 135: ...TOSHIBA AIR CONDITIONING www toshiba aircon co uk MADE IN UK A90 0130 Revised April 2001 ...
