69
14
Troubleshooting
Diagnostic Procedure for Check Code
Check code
Operation cause
[93]
TC1 sensor error
Indoor TC1 sensor alarm
Check connection of TC1 sensor (TC1 sensor: CN20), disconnection of circuit, and
characteristics of sensor resistance value.
If the sensor is normal, replace indoor P.C. board.
Check code
Operation cause
[94]
TC2 sensor error
Indoor TC2 sensor alarm
Check connection of TC2 sensor (TC2 sensor: CN05), disconnection of circuit, and
characteristics of sensor resistance value.
If the sensor is normal, replace indoor P.C. board.
Is SW09 bit 1 of master
outdoor interface
P.C. board off (*1)
?
No
Yes
No
Yes
Yes
Turn off SW09 bit 1 on interface
P.C. board of master outdoor unit.
It is normal.
Restart the operation.
Reset the power source and
execute automatic address.
Id [8F ] detected
Check interface P.C. board.
Check code
Operation cause
[8F]
1. Address setup of outdoor unit was duplicated
Duplicated terminal outdoor
2. Interface P.C. board error
addresses
( *1) SW09 bit 1 on interface P.C. board of the
master outdoor unit is for outdoor address
setting.
OFF = Automatic addressing (factory set).
ON = Manual addressing.
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 ...
