Toshiba MMC-P0151H, Руководство по обслуживанию

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3-135
SV3C valve
Check joint
TK1
sensor
Strainer
Strainer
Strainer
Oil
separator
Capillary
Accumulator
Capillary
TK2
sensor
Compressor
Check
valve
Check
valve
Oil
removal
valve
Check
valve
SV3B
valve
Oil
tank
SV3A
valve
Balancing pipe valve
Check code
d7
d8
d9
db
dC
Check code name
Low oil level detection protection
TK1 temp. detection circuit alarm
TK2 temp. detection circuit alarm
Oil level detection circuit blockage detection
Oil level detection circuit leakage detection
Judgment
Oil level shortage status has been detected continuously for approx. 2 hours
while oil equalizing control was continuously implemented.
Temp. change at the oil tank primary side was not detected while oil level
detection control was implemented.
Temp. change at the oil tank secondary side was not detected while oil level
detection control was implemented.
Temp. change at both the oil tank primary side and secondary side was not
detected while oil level detection control was implemented.
The status that TK1 temp. is high (50°C or more) was continuously detected
for a long time.
Operation starts.
→
During operation.
→
Oil level detection control starts.
→
During oil level detection counting.
→
Oil level judgment result.
7 segment display
[OL] [– –]
Counted down every 10 seconds from [OL] [1F]
[OL] [FF]
Counted up every 1 second from [OL] [01]
[OL] [A0] [A1] [A2] [A3] [A4]
Judgment
[A0]
[A1]
[A2]
[A3]
[A4]
Judgment
Oil amount in the compressor is adequate. Check that the operation continues and there is no problem.
If [dC] occurred, execute check even if oil level was judged as adequate.
Oil level was judged as shortage. If this judgment continues, the system stops in protection.
When [d7], [dC] occurred, check according to the check items.
TK1 temp. detection was judged as an error. If this judgment continues, the system stops in protection.
When [d8] occurred, check according to the check items.
Oil level detection circuit (SV3C valve) was judged as blockage. If this judgment continues, the system stops in protection.
When [db] occurred, check according to the check items.
TK2 temp. detection was judged as an error. If this judgment continues, the system stops in protection.
When [d9] occurred, check according to the check items.
3-9. FORCED FUNCTION OF OIL LEVEL DETECTION
(OUTDOOR UNIT)
The oil level detection control can be forcibly implemented by a switch on the interface P.C. board of the outdoor
unit. When an error in the oil tank circuit occurs and there is no cause such as sensor error, connection error, out
of place, valve close operation error, etc., check as follows.
<Oil tank circuit system error>
<Operation procedure>
1) Start the trial operation after alarm was cleared.
2) Set SW01/SW02/SW03 on the interface P.C. board of the outdoor unit to 1/16/1, which oil level is tobe
detected.
3) Push the push-switch SW04 for 2
seconds.
4) Check the 7 segment display on
the P.C. board.
<Oil level judgment result>
<Peripheral circuits of oil tank>