COSMOGAS FRYO 6PI, Instructions For Installation, Use And Maintenance Manual

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44 FRYO PI
COSMOGAS
8 - DIAGNOSTIC
Code Description Operation status Possible causes and solutions
02 F9
Fan rotation speed error (6 kW and 9 kW
model)
Compressor stopped
There is no feedback from the fan or the fan does not
reach the desired speed. Check that the fan or the gas
side control board are working. Verify that the fan is
connected to the correct port on the board.
02 Fa Fan rotation speed error (13 kW model)
Reduced compressor speed.
If both fans are in error, the
compressor stops.
There is no feedback from fan # 1 or the fan does not
reach the desired speed. Check that the fan or the elec -
tronic board are working. Verify that the fan is connected
to the correct port on the control board.
02 Fb
The low pressure sensor indicates too
low a value
Compressor stopped
This protection works when the low pressure sensor
detects a too low value. If, after reducing the compressor
speed, the pressure remains too low, the compressor will
be stopped. Check that the value set for the supply water
is not too high. Check that the water flow rate is suffi -
cient. Check that the electronic expansion valve works
properly. Check that the air turns regularly in cooling or
that it is not too hot in heating. If necessary, top up the
refrigerant quantity.
02 Fc
Compressor speed reduced due to
too high pressure detected by the high
pressure sensor
Compressor stopped
This protection appears when the pressure is higher than
the pressure set for a certain speed. If the compressor
reduces the speed, but the pressure remains higher than
expected, the compressor stops. Check that the supply
temperature is not too high, that the water flow rate is
not too low, that the electronic expansion valve works
regularly, that the air turns regularly in the unit and that
the temperature difference between supply and return
does not exceed 8 ° C.
02 PI Incorrect power supply voltage Compressor stopped
The power supply voltage is too high, too low or the sy -
stem works in overload. The appliance resets itself after
5 minutes. If the protection trips 3 times in a certain time,
the block becomes permanent.
02 P2 Compressor phase current protection Compressor stopped
The supply current is too high or low, or the system is
overloaded. Check the power supply. Check the correct
operation of the fan and the pump, if the external battery
is dirty, if the supply temperature is too high and if the
difference between the supply and return temperature is
not higher than 8 ° C.
02 P3 IPM module protection Compressor stopped
Compressor driver fault. Check that the cable is intact
and not damaged. Check that the compressor inverter
board or the compressor are not broken.
02 P4 Compressor oil return protection Accelerated compressor
If the compressor has always worked at minimum speed
for a certain period of time, the unit starts this protection
to suck oil into the compressor. This is a normal security
activity, no activity should be done.