Daewoo BH090, Manual, Page: 75 / 261

73
Defect
Low pressure is
operating at lower
than standard
Cause
1. Clogged pipe, drier and expansion valve
2. Lack of refrigerant.
3. The evaporator is frosted or insufficient inlet
air for evaporator.
4. Air–inlet side clogged.
5. Air filter clogged with dust and dirt.
6. Evaporator clogged with dust and dirt.
7. The sensible bulb or pipe of expansion valve.
8. Frosted liquid refrigerant in refrigerating cycle.
9. The expansion valve worn–out.
Measures
1. Disconnect them and check.
2. Check leaking part, then charge refrigerant up
that the no–bubbles are seen on the sight
glass.
3. Stop operation temporarily.
4. Check for clogged part and clean up.
5. Keep the air filter clean with water or com-
pressed.
6. Check for clogged part and clean.
7. Replace
8.
Discharge the refrigerant completely, and
charge the refrigerant again to the specified
amount without liquid refrigerant.
9. Replace