ST-SP Pag.
60 Rev 02 05/13
UK
POSSIBLE CAUSES
SOLUTIONS
L
Suction piping frosted
1
Expansion valve with excessive flow of gas or over-sized.
2
Expansion valve blocked in open position.
3
Evaporator ventilator does not work.
4
High gas load.
1
Regulate the valve or replace it with one correctly sized.
2
Clean the valve of foreign substances or replace it if
necessary.
3
Identify the cause and eliminate it.
4 Reduce
the
load.
