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USER MANUAL – Release 1.2 of 01/01/2010
Page 160 of 191
Version: 02/03/2010
57.9
LOW EVAPORATION PRESSURE IF THE LOW PRESSURE TRANSDUCERS
ARE USED
Warning, if low pressure transducers are configured, the low pressure alarm regulation only takes place on
the same.
Display label meaning
b1lP
(circuit n° 1 analogue input low pressure)
b2lP
(circuit n° 2 analogue input low pressure)
b3lP
(circuit n° 3 analogue input low pressure)
b4lP
(circuit n° 4 analogue input low pressure)
Cause of activation
The alarm is activated when at least one pressure probe configured as the
evaporation control measures a temperature < AL03 set in the following
conditions:
•
working in cooling or heating mode
•
stand-by or OFF-remote if AL08 = 1
!
In defrost if AL06=1
The alarm is not signalled:
•
in defrost for time AL07 in correspondence with valve inversion
•
on compressor switch-on for the time AL01
Reset
If the evaporation control probe measures a temperature > of the AL03 set +
differential AL04
Reset
Automatic – it becomes manual after AL05 interventions/hour (reset procedure
in functions menu)
Icon
flashing
Action
Relay + buzzer activated
Regulators
Alarm
Relay + buzzer activated
Reverse valve
it follows its regulation
Recovery valve
it follows its regulation
Free-cooling on/off valve
it follows its regulation
Auxiliary relay
It follows/they follow its/their regulation
Idle running valve
It follows its regulation
Supply ventilation
It follows its regulation
Condensation ventilation
Off
Support/boiler/anti-freeze
It follows its regulation
Pump/and water evaporator
and condenser
It follows its regulation
Affected
circuits
compressors
Off
Unaffected
circuits
compressors
It follows its regulation
Unaffected circuits pump
down solenoid valve
It follows its regulation
Affected
circuits
pump
down solenoid valve
off
