Compressor Breakdown - Toshiba Super MMU-AP0091H Service Manual

Check code name
[H01] / [1F]
(d07 / AI-NET)
Sub-code: 01: Compressor 1 side 02: Compressor 2 side
Is power voltage of outdoor unit normal?
YES
Does voltage drop occur
when other compressor starts?
NO
Is connection of wiring or connection of
connector on IPDU P.C. board normal?
YES
Is winding resistance
between phases of corresponding
compressor normal? (Note 1)
YES
Is not it an abnormal overload?
NO
Check IPDU P.C. board.
Note 1
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.
Check code name

Compressor breakdown

NO
380 – 415V ± 10%
YES
NO
NO
YES
Take off lead cable of compressor.
1. Check resistance between windings:
It is normal if there are 0.7 to 0.9 .
2. Check insulation between outdoor cabinet and terminal:
It is normal if there are 10M or more.
170
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.
S
R
Details of compressor
power connecting section
C