Toshiba MMC-P0151H, Руководство по обслуживанию

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3-92
Check code Operation cause
[db]
Oil level detection circuit blockage detection
1. Blockage in SV3C valve
2. Blockage in SV3C valve circuit
YES
YES
YES YES
NO
NO
NO
No blockage
Is there miswiring of
TK1/TK2/TK3 sensor?
Is resistance value characteristics
of TK1/TK2 sensor normal?
Is the connection of SV3C valve
coil and the coil unit normal?
Modify coil connection.
(SV3C : CN314)
Coil error Replace the coil.
Is there blockage in SV3C?
Check interface P.C. board.
Correct miswiring.
Sensor error
Replace clogged part.
[ ]
TK1 sensor : CN516
TK2 sensor : CN515
TK3 sensor : CN507
Accumulator
Balancing pipe valve
Oil
tank
SV3C valve
Check joint
Strainer
Strainer
Strainer
SV3A
valve
SV3B
valve
TK1
sensor
Check
valve
Check
valve
Check
valve
Capillary
Capillary
TK2
sensor
Oil
removal
valve
Compressor
Oil
separator
B
A
( * 1) SV3C valve blockage check procedure
1. After resetting power supply, start a trial operation.
2. Set SW01/SW02/SW03 on interface P.C. board to 1/16/1, respectively.
3. Check display on the 7 segment of interface P.C. board.
7 segment display
When operation has started “OL” “– –”
During detection of oil level “OL” “FF” or “Numeral”
Judgment result of oil level “OL” “A0” “A1” or “A3”
In case of judgment result “A0” “A1”
→
Oil level is adequate. Resume the operation.
In case of judgment result “A3”
→
Possibility of SV3C valve circuit blockage is considered.
Check the following items.
4. Start a trial operation under condition that
AC220–240V, 50Hz ( AC220V, 60Hz )
power is on to SV3C valve.
5. During operation, check whether discharge gas
flows to the strainer secondary side (A part in the
right figure) at upstream of SV3C valve, and SV3C
valve secondary side (B part in the right figure).
→
If blocked part is found, replace the part.