LCP
RG66006889-Rev.01
34
FAULT
Possible causes
Corrective actions
High evaporation pressure.
Water
T
too
high.
Check the thermal load and/or
efficiency of the thermostat
function.
Check the efficiency of the
thermostatic valve.
Defrosting absent or incomplete
Error in parameter settings.
Check the setting of the start and
end defrost parameters on the
microprocessor.
Check whether defrosting water is
properly drained from the coils.
Check the uniformity of the
refrigerant circuit outlet
temperatures at the top and bottom
of the coils: the maximum
temperature differential allowed is
10 °C. Check the refrigerant level.
The 4-way valve has failed to
work.
Check whether it is regularly
energized and deenergized.
13 WATER PRESSURE DROPS
13.1 PRESSURE DROPS IN EVAPORATOR
NB: for further details contact the HiRef technical department.
13.2 PRESSURE DROPS IN HEAT RECUPERATOR
NB: for further details contact the HiRef technical department.
