60
Troubleshooting
Diagnostic procedure for check code
Check code
Operation cause
[AE]
1. Ps pressure switch error.
Low pressure fault (Ps)
2. Ps switch connection error.
Detected by low pressure switch <0.02 MPa
3. Compressor compressing error.
4. 4-way valve error.
5. Refrigeration undercharge.
6. Gas leak.
Is Ps switch connector
correctly connected?
Is Ps switch normally closed (NC)?
Is low pressure below
0.95 MPa during
operation of compressor?
Check interface PC board.
Modify connector connection.
PJ9 (MCC-1223)
Ps switch error.
Replace switch.
Check compressor.
Confirm refrigeration charge correct.
(No leaks from system.)
Does refrigerant bypass
from outlet to inlet on 4-way
valve?
Check 4-way valve.
j
j
j
j
h
h
h
h
No
Yes
Yes
Yes
No
No
No
Yes
Check code
Operation cause
[AF]
Abnormal power phase order or missing phase of
Outdoor unit power source phase
power supply to the outdoor unit.
order miswiring
There is an abnormal power phase order or missing phase of power supply to the outdoor unit. Check
power supply wiring.
Содержание HFC R407C
Страница 1: ...A90 0233 HFC R407C Super Multi System Service Manual Air Conditioner Multi Split Type System ...
Страница 2: ...2 ...
Страница 18: ...18 Wiring diagrams Outdoor unit MAR F105HTM8 PE ...
Страница 19: ...19 Wiring diagrams Outdoor unit ...
Страница 21: ...21 Refrigeration piping schematic diagram Outdoor unit ...
Страница 74: ...74 Exploded view and service parts Outdoor unit ...
Страница 75: ...75 Exploded view and service parts Outdoor unit 12 14 j ...
Страница 80: ...www toshiba aircon co uk MADE IN UK A90 0233 Revised October 2002 ...