Toshiba MiNi-SMMS MCY-MAP0501HT Service Manual page 129

Check code Check code name
[E20] / [42] Unit connected to other line
during automatic address
(TCC-L / AI-NET)
Auxiliary code: 01: Connection of outdoor of another system 02: Connection of indoor unit of another system
Separate the wire between systems according to address setup method.
Check code Check code name
[E31] / [CF] IPDU communication error
(TCC-L / AI-NET)
Auxiliary code :
01: Comp IPDU error 02: Fan 1 IPDU error
03: Comp + Fan 1 IPDU error 04: Fan 2 IPDU error
05: Comp + Fan 2 IPDU error 06: Fan 1 + Fan 2 IPDU error
07: All IPDU error or disconnection of communication line between IPDU-I/F P .C. board or outdoor I/F P .C. board error
Are communication connectors between
I/F P.C. board and comp IPDU connected?
( I/F P.C. board : CN600 )
Comp IPDU : CN06
YES
Are communication connectors
between comp IPDU and fan IPDU connected?
Comp IPDU : CN22
( )
Fan IPDU : CN804
YES
Has the power supply connectors
connected comp IPDU and fan IPDU?
Comp IPDU : CN13
( )
Fan IPDU : CN01
Check the voltage, AC 220–240V
YES
Has the power supply connectors
connected fan IPDU and noise filter P.C. board?
Fan IPDU : CN02
( )
Noise filter P.C. board : CN08
Check the voltage, AC 220–240V
YES
Replace P.C. board according to auxiliary code.
Cause of operation
When starting automatic indoor address, a
device in another refrigerant system is
connected.
Cause of operation
1. Connection error of communication line
between IPDU and I/F P.C. board
2. I/F P.C. board error
3. IPDU P.C. board error
4. External noise
NO
Correct connection of communication line.
NO
Correct connection of communication line.
NO
Correct connection of power supply line.
NO
Correct connection of power supply line.
Check code Check code name
[F01] / [0F] Indoor TCJ sensor error
(TCC-L / AI-NET)
NO
Is TCJ sensor connector (CN102: Red)
on indoor P.C. board normally connected?
YES
NO
Are characteristics of TCJ sensor
resistance value normal? ∗
YES
* Indoor unit temperature sensor characteristics
See Characteristics-2.
®
Check indoor main P.C. board.
Defect Replace
Check code Check code name
[F02] / [0d] Indoor TC2 sensor error
(TCC-L / AI-NET)
NO
Is TC2 sensor connector (CN101: Black)
on indoor P.C. board normally connected?
YES
NO
Are characteristics of TC2 sensor
resistance value normal? *
YES
* Indoor unit temperature sensor characteristics
See Characteristics-2.
Check indoor main P.C. board.
Defect ® Replace
Check code Check code name
[F03] / [93] Indoor TC1 sensor error
(TCC-L / AI-NET)
NO
Is TC1 sensor connector (CN100: Brown)
on indoor P.C. board normally connected?
YES
NO
Are characteristics of TC1 sensor
resistance value normal? *
YES
* Indoor unit temperature sensor characteristics
See Characteristics-2.
Check indoor main P.C. board.
Defect ® Replace
Cause of operation
TCJ sensor Open/Short
Correct connection.
Replace TCJ sensor.
Cause of operation
TC2 sensor Open/Short
Correct connection.
Replace TC2 sensor.
Cause of operation
TC1 sensor Open/Short
Correct connection.
Replace TC1 sensor.