71
Ecotower
COSMOGAS
9 - DIAGNOSTICS
Code
Description
Status
Solution
F13
Failure of the temperature sensor (Tr)
Unit locked
Check that the sensor is not shorted, open and that it is not giving wrong
values. If necessary, replace the sensor.
F14
Failure of the DHW temperature sensor
(TW)
Unit locked
Check that the sensor is not shorted, open and that it is not giving wrong
values. If necessary, replace the sensor.
F15
Failure of the heating/cooling
temperature sensor (Tc)
Unit locked
Check that the sensor is not shorted, open and that it is not giving wrong
values. If necessary, replace the sensor.
F16
Failure of the supply water
temperature sensor (TUO)
Unit locked
Check that the sensor is not shorted, open and that it is not giving wrong
values. If necessary, replace the sensor.
F17
Failure of the return water
temperature sensor (TUI)
Unit locked
Check that the sensor is not shorted, open and that it is not giving wrong
values. If necessary, replace the sensor.
F18
Failure of the liquid line temperature
sensor (TUP)
Unit locked
Check that the sensor is not shorted, open and that it is not giving wrong
values. If necessary, replace the sensor.
F21
Failure of the circuit 1 water
temperature sensor (TV1)
Unit active,
mixing valve 1
blocked at 0.
Check that the sensor is not shorted, open and that it is not giving wrong
values. If necessary, replace the sensor.
F22
Failure of the circuit 2 water
temperature sensor (TV2)
Unit active,
mixing valve 2
blocked at 0.
Check that the sensor is not shorted, open and that it is not giving wrong
values. If necessary, replace the sensor.
F25
Communication error
Unit locked
Communication between control panel and control card or gas side control
card, check the electrical wiring. Check that the microswitches on the boards
are positioned as shown in the wiring diagrams. The system restarts as soon
as communication is restored.
F27
Eeprom internal error
Unit remains
active
Replace the control board.
F28
Error on the PWM signal of the
circulator
Unit remains
active
Check the electrical supply to the circulator, check the circulator wiring check
that the circulator is not broken.
F29
Error on mixing valve 1
Active unit,
mixing valve 1
blocked at 0.
Check the wiring of mixing valve 1, check the output signal voltage from the
PCB board, check that the valve is not broken.
F30
Error on mixing valve
2
Active unit,
mixing valve 2
blocked at 0.
Check the wiring of mixing valve 2, check the output signal voltage from the
PCB board, check that the valve is not broken.
P01
Protection in the main electrical
supply line
Compressor
stopped
The electrical supply current is too high or too low. The system automatically
resets after 5 minutes. If the same error occurs 3 times consecutively in a
certain period of time, the system is permanently blocked. Check that the
electrical supply is correct. Check that the fan or pump motors are running
smoothly. Check that the compressor is working properly. Check that the
water temperature is not too high and that the difference between supply
and return is less than 8 ° C.
P02
Compressor phase protection
Compressor
stopped
The compressor supply current is too high or too low. Check that the fan or
pump motors are running smoothly. Check that the compressor is not blocked.
Check that the water temperature is not too high and that the difference
between supply and return is less than 8 ° C.
P03
Compressor inverter in protection
Compressor
stopped
Compressor driving failed. Check that the compressor connection cable
is not broken or loose. Check that the compressor or the compressor
inverter board are not broken.
P04
Oil return protection in the compressor Compressor
remains on
If the unit works at low speed for a long time, this protection will automatically
activate to allow the oil to return to the compressor. This is a normal
functioning protection, which does not need any action.
P05
The compressor turns off due to the
intervention of the high pressure
switch
Compressor
stopped
The refrigerant circuit pressure is too high. The system resets itself after 5
minutes. If the same error occurs 3 times consecutively in a certain period of
time, the system is permanently blocked. Check that the fan or pump motors
are running smoothly. Check that the compressor is working properly. Check
that the water temperature is not too high and that the difference between
supply and return is less than 8 ° C.
