Toshiba MiNi-SMMS MCY-MAP0501HT Service Manual page 132

Check code Check code name
[H01] / [1F] Compressor breakdown
(TCC-L / AI-NET)
NO
Is power voltage of outdoor unit normal?
* 220 – 240V ± 10%
YES
NO
Is connection of wiring or connection of
connector on IPDU P.C. board normal?
YES
Is winding resistance
NO
between phases of corresponding
compressor normal? (Note 1)
YES
YES
Is not it an abnormal overload?
NO
(Note 1)
Take off lead cable of compressor.
1. Check resistance between windings: It is normal if there are 0.1 W to 0.3 W .
2. Check insulation between outdoor cabinet and terminal:
It is normal if there are 10M W or more.
Check IPDU P.C. board.
CAUTION
* After checking the output, when connecting the compressor lead again to the compressor terminal, check
surely there is no distortion on the Fasten receptacle terminal.
If it is loosened, caulk it with pinchers, etc and then connect lead to the terminal firmly.
Cause of operation
1. Outdoor unit power line error
2. Compressor circuit system error
3. Compressor error
4. Cause of abnormal overload operation
5. IPDU P.C. board error
Correct power line.
Correct connector connection or wiring.
Compressor error
(Motor burning, etc.)
Correct cause of overload.
C
S
(White)
(Black)
R
(Red)
Details of compressor
power connecting section
Check code Check code name
[H02] / [1d] Compressor error (Lock)
(TCC-L / AI-NET)
NO
Is power voltage of
outdoor unit normal? * 1
* 1 220 – 240V ± 10%
YES
NO
Is wiring or connector connection
on IPDU P.C. board normal?
YES
YES
Is not it an abnormal overload?
NO
YES
Is there no refrigerant stagnation
Is case heater output normal?
in compressor shell?
NO
Operation starts. Check case heater.
NO
Is compressor normal? * 2
YES
* 2 Check the following items mainly.
1. Existence of abnormal sound and abnormal vibration during operation or starting
2. Abnormal overheat of case during operation or stop time (Never touch with hands.)
Check IPDU P.C. board.
3. Current of compressor lead during operation or starting time
(No varied change of current) change
* 3 If OCR operates even after manual reset of OCR, check whether the wiring to the
current sensor (T02) of Comp-IPDU is correct or not.
Check code Check code name
[H03] / [17] Current detective
circuit system error
(TCC-L / AI-NET)
NO
Wiring or connector connection
on IPDU P.C. board normal?
YES
Cause of operation
1. Outdoor unit power line error
2. Compressor circuit system error
3. Compressor error
4. Refrigerant stagnation in compressor shell
5. IPDU P.C. board error
Correct power line.
Correct connector connection
or wiring.
Correct cause of overload.
YES
Correct refrigerant stagnation
in compressor shell.
NO
Compressor error
Cause of operation
1. Cabling or connector connection error on IPDU P.C. board
2. IPDU P.C. board error
Correct connector connection or cabling.
Check IPDU P.C. board.