Immergas MAGIS M4-30 Use And Installation page 101

f the error code E2 is displayed on the control panel, check wiring between the control panel and the unit.
Other error codes and causes of faults are found in section 13.4 Error codes.
Have quali ed personnel repair the faults.
10.4.2 Troubleshooting at rst installation (models 18-30 kW).
e pump does not work despite power
being connected.
Black display.
e pump makes noise.
• e fault signal is indicated by the LED display.
• e fault warning LED remains lit red.
• e pump switches o (according to the error code) and tries to perform a cyclical restart.
i INFORMATION
EXCEPTION: Error code E10 (block).
A er about 10 minutes the pump switches o permanently and the error code is displayed.
Fault
E04 Grid undervoltage
E05 Grid overvoltage
E09 Turbine operation
E10 Block
E21* Overload
E23 Short-circuit
E25 Contact/winding
E30 Module overheated
E31 Power section overheated
E36 Electronic failures
(*): In addition to the LED indication.
Cause
Faulty electrical fuse.
e pump is not powered.
Cavitation due to insu cient intake pres-
sure.
Cause
Grid power supply too low
Grid power supply too high
The pump runs backward (the fluid
ows through the pump from the de-
livery to the intake)
e rotor is blocked
Motor slow
Motor current too high
Motor winding faulty
Inside of the too hot module
Room temperature too high
Faulty electronics
e fault warning LED remains lit red.
Remedy
Check the fuses.
Restore power a er the failure.
Increase the system intake pressure within
the allowed eld.
Check the setting of the ow head and, if
necessary, set it on the lower head.
Remedy
Check the mains voltage
Check the mains voltage
Check the flow, install the check valve if
necessary
Request the intervention of customer service
Request the intervention of customer service
Request the intervention of customer service
Request the intervention of customer service
Improve room ventilation,
check the operating conditions, request
customer service, if necessary.
Improve room ventilation,
check the operating conditions, request
customer service, if necessary.
Request the intervention of customer service