Protection Systems; Compressor Delay Protection; Phase Control; Overload Protection - fluidra 65542 PROHEAT II 35KW Manual Técnico, Arranque Y Funcionamiento

PROHEAT II SERIES · AIR/WATER SYSTEM
6.5.

PROTECTION SYSTEMS

6.5.1. COMPRESSOR DELAY PROTECTION

The compressor delay time is adjustable (F21) and set to 5 minutes by default. The regulator
uses this time setting to prevent continuous ON/OFF cycles. When the compressor has been
running and then stops, the next time it is started up, the regulator will check that the period
of time has passed before starting it up again; if not, it will wait for 5 minutes until the
compressor starts again. If the machine has just been started up, there will be a 5-minute wait
before the compressor starts.

6.5.2. PHASE CONTROL

When the 3 phases of the machine are connected incorrectly or a fault is detected in any of
the phases, the machine will stop and the error code "A91" will be displayed.

6.5.3. OVERLOAD PROTECTION

Consumption is checked three seconds after the compressor starts up; if the current > F23 for
5 seconds, the machine will stop and error "A93" will be displayed.

6.5.4. WATER FLOW PROTECTION

The water flow switch status is checked 30 seconds after the water treatment pump has been
running. If the status of the flow switch is OFF after another 5 seconds, the machine will stop
and display error "A15".

6.5.5. HIGH PRESSURE PROTECTION

The high pressure switch is a normally closed contact located on the compressor discharge
line. The regulator checks the status of the high pressure switch for 5 seconds and will have 5
seconds to act. If the contact opens, the machine will stop. If the pressure switch is closed, the
machine will start up automatically.
If three alarms from this protection are triggered in one hour, the system will lock down and
error code "A12" or "A14" will appear. The machine will have to be restarted manually to
unlock the system.

6.5.6. LOW PRESSURE PROTECTION

The low pressure switch is a normally closed contact. The status of the low pressure switch is
not checked during the defrost process and during the first three minutes after starting up the
machine.
The regulator checks the status of the low pressure switch for 5 seconds and will have 5
seconds to act. If the contact is open, the machine will stop. If the low pressure switch closes
at any time, the machine will start up automatically.
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