Immergas MAGIS M4-30 Use And Installation page 128

Supervision
Error
System Error Operation or protection anomaly
Code
Code
P6 26 Inverter module protection.
P9 29 Fan protection.
Pb 31 Antifreeze protection.
High temperature protection of the
Pd 33 outlet temperature of the refrigerant
in the condenser.
The inlet water temperature is higher
PP 38 than the water outlet in heating
mode. (Tw_in>Tw_out)
Communication fault between the main
H0 39 control board of the hydraulic module
and the main control board PCB B.
Communication error between the
H1 40 inverter module PCB A and the main
control board PCB B.
Cause of fault and corrective action
1. The supply voltage of the unit is low, increase the supply voltage
to the required range.
2. The space between the units is too narrow for the thermal exchange.
Increase the space between the units.
3. The heat exchanger is dirty or something is blocked on the surface.
Clean the heat exchanger or remove the obstruction.
4. The fan does not work. The motor of the fan or the fan is damaged,
replace it with a new fan or a new motor.
5. Refrigerant volume overload. Recharge the refrigerant at the right
volume.
6. The water flow rate is low, there is air in the system, or the pump
head is not sufficient. Release the air and select the pump again.
7. The outlet water temperature sensor is loose or damaged, reconnect
it or replace it with a new one.
8. The storage tank coil is small.
9. The wiring of the module or the screws are loose. Reconnect the
wires and screws. The thermally conductive adhesive is dry or shifted.
Add some thermally conductive adhesive.
10. The connection of the cables is loose or failed. Reconnect the cable.
11. The drive board is faulty, replace it with a new one.
12. If it already has been confirmed that the control system has
no problems, then the compressor is faulty. Replace it with a new
compressor.
Check the condition of the fan and of the fan motor.
The unit automatically returns to normal operation.
1. The protection of the heat exchanger has not been removed. Re-
move the protection.
2. The heat exchanger is dirty or something is blocked on the surface.
Clean the heat exchanger or remove the obstruction.
3. There is not enough space around the unit for thermal exchange.
4. The fan motor is damaged, replace it with a new one.
1. Check the resistance of the two sensors.
2. Check the two positions of the sensors.
3. The connector of the cable of the water inlet/outlet sensor is loose.
Reconnect it.
4. The water inlet/outlet sensor (Tw_in/Tw_out) is damaged. Replace
it with a new sensor.
5. The four-way valve is blocked. Restart the unit to allow the valve
to change direction.
6. The four-way valve is damaged, replace it with a new valve.
1. The cable does not connect the main control board PCB B and
the main control board of the hydraulic module. Connect the cable.
2. The sequence of communication cables is incorrect. Reconnect the
cable in the right sequence.
3. If there is a high magnetic field or interference due to high power,
such as lifts, large power transformers, etc. Add a barrier to protect
the unit or move the unit to another position.
1. Check whether the two boards PCB A (inverter module) and PCB
B (control board) are powered. Check whether the indicator light
on the printed circuit of the inverter is on or off. If the light is off,
reconnect the power cable.
2. If the light is on, check the wiring connection between the PCB of
the inverter module and the PCB of the main control board. If wiring
is loose or damaged, reconnect the wiring or change with new wiring.
3. Replace the main board (PCB B) and then the inverter module
(PCB A).
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