Troubleshooting
Diagnostic Procedure for Check Code
86
14
Check code
Operation cause
[d2]
Defective slave outdoor unit
Server outdoor alarm
An error occurs in the slave outdoor unit. Confirm the check code of the slave unit, and
check it according to the diagnostic procedure for each check code.
Check code
Operation cause
[d3]
Error of temp. sensor incorporated in IGBT
TH sensor alarm
(Inverter Gate Bi-Polar Transistor)
There is an error with the temp. sensor incorporated in IGBT. Check connectors CN07 on
IPDU P.C. board and CN600 on interface P.C. board. If there is no problem,
replace IPDU P.C. board.
Check code
Operation cause
[d4]
TK1 sensor open/short
TK1 sensor alarm
Open/short of TK1 was detected. Check connection (TK1 sensor: CN516) and resistance
value characteristics of the sensor.
If sensor is normal, replace the outdoor interface P.C. board.
Check code
Operation cause
[d5]
TK2 sensor open/short
TK2 sensor alarm
Open/short of TK2 was detected. Check connection (TK2 sensor: CN515) and resistance
value characteristics of the sensor.
If sensor is normal, replace the outdoor interface P.C. board.
Check code
Operation cause
[d6]
TK3 sensor open/short
TK3 sensor alarm
Open/short of TK3 was detected. Check connection (TK3 sensor: CN507) and resistance
value characteristics of the sensor.
If sensor is normal, replace the outdoor interface P.C. board.
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 ...
