BLOCKSYSTEM FA-FT Pag. 32 REV. 04 10/07
UK
I
Coldroom temperature too high
1 Thermostat set too high.
2 Undersized expansion valve.
3 Undersized evaporator.
4 Insufficient air circulation.
1 Adjust the setting.
2 Replace the expansion valve with one of a
suitable type
3 Replace with an evaporator with a larger
surface area
4 Improve air circulation
L
Suction pipes frosted
1 Excessive passage of gas through the expansion
valve or valve oversized.
2 Expansion valve locked in the open position.
3 The evaporator fan motor does not work.
4 High gas charge.
1 Adjust the valve or replace it with one of
the correct size.
2 Clean foreign bodies from the valve and
replace if necessary.
3 Find the cause and remove it.
4 Reduce the charge.
M
Discharge pipe frosted or wet
1 Drier filter restriction.
2 Valve on the discharge line partially closed.
1 Replace the filter.
2 Open the valve or replace it if necessary.
• For the drawings see pag.78-79-80-81
• For the refrigerating diagram see pag.82
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