Leakage/Clogging Of Refrigerating Cycle Circuit - Toshiba MMY-MAP0726FT2P-UL Service Manual

9-9. Leakage/Clogging of Refrigerating Cycle Circuit

List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle
or Oil Circuit Part
(MMY-MAP0726*)
Clogging
Part
Outdoor PMV1, PMV3, 4
Outdoor PMV4 circuit check valve
SV14 valve
SV14 valve circuit check valve
Check valve in discharge pipe
convergent section
SV11 valve
SV11 valve circuit check valve
Check valve in discharge pipe
Check valve in oil-equalization circuit
Capillary
Strainer
SV3A valve
SV3B valve
SV3C valve
SV3D valve
SV3D valve circuit capillary
Strainer
SV3E valve
Oil return distributor
SV3C bypass capillary
SV15 valve
Check valve in main
sub bypass
Leakage
Part
Outdoor PMV1
Check valve in discharge pipe
convergent section
Check valve in discharge pipe
Check valve in oil-equalization
circuit
SV3A valve
SV3C valve
SV15 valve
"XX" represents sub-code
Note:
Site of fault
Check target unit
(see next page)
Corresponding unit
A
Corresponding unit
B
C Corresponding unit
Corresponding unit
D
E Other connected unit Oil level low detection and protection H07-XX
F Corresponding unit
G Other connected unit Oil level low detection and protection H07-XX
Corresponding unit
H
Corresponding unit
I
J Corresponding unit
K Corresponding unit
Corresponding unit
L
M Corresponding unit
Site of fault
Check target unit
(see next page)
Corresponding unit
A Other connected unit Discharge temp. trouble (TD1)
Corresponding unit
B
Corresponding unit
C
Corresponding unit
D
E Corresponding unit
G Corresponding unit
Corresponding unit
L
Detected fault and check code
Activation of high-pressure protection
Activation of low-pressure protection
Discharge temp. trouble (TD1)
Discharge temp. trouble (TD2)
High-pressure protection operation
High-pressure SW system trouble
High-pressure SW system trouble
Oil level detection circuit trouble
Oil level low detection and protection
Oil level low detection and protection H07-XX
Oil level low detection and protection H07-XX
Oil level detection circuit trouble
Oil level low detection and protection
Oil level low detection and protection H07-XX
Oil level detection circuit trouble
Activation of high-pressure protection
Discharge temp. trouble (TD1)
Discharge temp. trouble (TD2)
Activation of high-pressure protection
Discharge temp. trouble (TD1)
Discharge temp. trouble (TD2)
Detected fault and check code
Outdoor liquid backflow trouble
Oil level low detection and protection
Discharge temp. trouble (TD2)
Oil level low detection and protection
Compressor breakdown
Compressor trouble (lockup)
Oil level low detection and protection
Compressor breakdown
Compressor trouble (lockup)
Oil level low detection and protection H07-XX
Oil level low detection and protection H07-XX
Oil level low detection and protection H07-XX
Cooling capacity is lower than
noumal indoorunit
− 205 −
Symptom
P20 Rise of abnormal pressure
H06 Fall of pressure
P03 Rise of discharge temp.
P17 (compressor 1)
Rise of discharge temp.
(compressor 2)
P20 Abnormal rise of pressure
P04-XX
P04-XX Abnormal rise of pressure
H16-XX Oil circuit trouble or oil
shortage judgment
H07-XX
Oil level low
Oil level low
Oil level low
Oil level low
H16-05 Oil circuit trouble
H07-XX Oil level low
Oil level low
Oil level low
H16-04 Oil circuit trouble
Rise of abnormal pressure
P20
P03 Fall of pressure
Rise of discharge temp.
P17
(compressor 1)
Rise of discharge temp.
(compressor 2)
P20
Rise of abnormal pressure
P03
Fall of pressure
Rise of discharge temp.
P17
(compressor 1)
Rise of discharge temp.
(compressor 2)
Symptom
P13 Refrigerant entrapment
H07-XX
P03 Rise of discharge temp.
P17 (compressor 1)
Rise of discharge temp.
(compressor 2)
H07-XX Refrigerant entrapment
H01-XX
H02-XX
H07-XX Refrigerant entrapment
H01-XX
H02-XX
Excessive amount of oil
(Leaking side)
Insufficient amount of oil
(Normal side)
Oil level low
Oil level low
Rise of TE2 temp.
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