Immergas MAGIS M4-30 Use And Installation page 128

Supervision
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.
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.
e inlet water temperature is higher
Cause of fault and corrective action
1. e supply voltage of the unit is low, increase the supply voltage
to the required range.
2. e space between the units is too narrow for the thermal exchange.
Increase the space between the units.
3. e heat exchanger is dirty or something is blocked on the surface.
Clean the heat exchanger or remove the obstruction.
4. e fan does not work.
replace it with a new fan or a new motor.
5. Refrigerant volume overload. Recharge the refrigerant at the right
volume.
6. e water ow rate is low, there is air in the system, or the pump
head is not su cient. Release the air and select the pump again.
7. e outlet water temperature sensor is loose or damaged, reconnect
it or replace it with a new one.
8. e storage tank coil is small.
9. e wiring of the module or the screws are loose. Reconnect the
wires and screws. e thermally conductive adhesive is dry or shi ed.
Add some thermally conductive adhesive.
10. e connection of the cables is loose or failed. Reconnect the cable.
11. e drive board is faulty, replace it with a new one.
12. If it already has been con rmed 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.
e unit automatically returns to normal operation.
1. e protection of the heat exchanger has not been removed. Re-
move the protection.
2. e heat exchanger is dirty or something is blocked on the surface.
Clean the heat exchanger or remove the obstruction.
3. ere is not enough space around the unit for thermal exchange.
4. e 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. e connector of the cable of the water inlet/outlet sensor is loose.
Reconnect it.
4. e water inlet/outlet sensor (Tw_in/Tw_out) is damaged. Replace
it with a new sensor.
5. e four-way valve is blocked. Restart the unit to allow the valve
to change direction.
6. e four-way valve is damaged, replace it with a new valve.
1. e cable does not connect the main control board PCB B and
the main control board of the hydraulic module. Connect the cable.
2. e sequence of communication cables is incorrect. Reconnect the
cable in the right sequence.
3. If there is a high magnetic eld or interference due to high power,
such as li s, 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 o . If the light is o ,
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).
e motor of the fan or the fan is damaged,