Toyotomi TAG3-A70EW, Service Manual

Page: 24 / 39

– 23 –
TROUBLESHOOTING GUIDE
Recharge rated weight.
OVERHEAT PREVENTIVE RELAY(INNER PROTECTOR)
Phenomenon
OHR works
Gas leakage
OHR is defective
Cause
1
2
Refer to trouble shooting.
Any gas leakage?
YES
After repair, fill up prescribed gas.
2
OVERHEAT PREVENTIVE RELAY(OHR)
OHR
NO
Any gas leakage?
YES
Firstly cut down power source. when the temp. of above part of the
compressor is below 50
°
C, does the OHR have electric continuity?
(see left fig)
NO
See trouble shooting (compressor)
YES
After repair, fill up prescribed gas.
attention high
temp.
Change OHR
1
2
3
NO
YES
NO
BLACK
RED
WHITE
CHECK CONNECTION
BETWEEN WHITE - BLACK.
INNER PROTECTOR
TAG fan rotate during cooling
mode operation?
1
YES
Any addition of refrigerant?
3
Phenomenon
INNER PROTECTOR works
Excessive refrigerant
TAG fan does not rotate
Gas leakage
Compressor does not operate
(INNER PROTECTOR is defective)
Cause
NO
Firstly cut down power source. when the temp. of above part of
the compressor is below 50
°
C, does the INNER PROTECTOR
have electric continuity?
(see left fig)
4
4
3
2
1
compressor A
( ※ Excessive refrigerant
might be charged)
compressor B