![background image](http://html1.mh-extra.com/html/carrier/transicold-x4-7300/transicold-x4-7300_operation-and-service-manual_2564193270.webp)
62-11637
9–6
Indication/Trouble
Possible Causes
Action / Reference
9.3.9
Abnormal Pressure Cooling
High discharge pressure
Condenser coil dirty
Condenser fan/upper belt defective
Discharge check valve restricted
Refrigerant overcharge or noncondensibles
Discharge service valve partially closed
Open
Low discharge pressure
SV4 leaking
Compressor valve(s) worn or broken
Low refrigerant charge
Suction modulation valve malfunction
Low suction pressure
Filter-drier partially plugged
Low refrigerant charge
Expansion valve malfunction
No evaporator air flow or restricted air flow
Excessive frost on evaporator coil
SV2 defective
Suction modulation valve malfunction
Liquid or suction line service valve partially closed
Open
Clutch failure
High suction pressure
SV4 leaking
Compressor valves(s) worn or broken
Compressor gasket(s) defective
Suction and discharge pressures
tend to equalize when unit is oper-
ating
Compressor valves defective
Compressor gasket(s) defective
9.3.10
Abnormal Pressure Heating
High discharge pressure
Solenoid valve malfunction
Condenser fan/upper belt defective
Check system for noncondensibles
Low discharge pressure
Compressor valves defective
SV1 leaking
Low refrigerant charge
Low suction pressure
Low refrigerant charge
SV1 leaking
Summary of Contents for Transicold X4 7300
Page 21: ...62 11637 1 6 1 3 SAFETY DECALS ...
Page 22: ...1 7 62 11637 62 03958 ...
Page 23: ...62 11637 1 8 ...
Page 24: ...1 9 62 11637 ...
Page 119: ...62 11637 SECTION 6 MESSAGECENTER PARAGRAPH NUMBER Page 6 1 MESSAGECENTER MESSAGES 6 1 ...
Page 278: ......