8
Status / Error message
Possible cause
Correction
INIT
Data communication
Initialisation procedure or system blocked. Electrical wiring defective,
interruption in power circuit/short circuit.
Please contact your authorised Webasto Marine dealer.
SEA
Sea water flow insufficient
Compressor output limited, compressor constantly switches to low output due to high pressure level in refrigerant circuit. Cooling mode only: sea water temperature too high or sea water flow rate too low. Sea water strainer blocked or no intake. Sea water pump defective.
Check sea water flow rate at sea water outlet. The minimum flow rate must be maintained. Clean sea water strainer and bleed sea water circuit.
BA11
Required cold water tem- perature not yet reached
Air handler is only switched on when the required cold water tem- perature is reached.
Correction: No action required. The air handler starts up automatical
-
ly.
CA11
Compressors deactivated
Set compressor(s) in the control setting are not active.
Please contact your authorised Webasto Marine dealer.
AAA Undervoltage
Switch-off in case of undervoltage. Power supply below set under- voltage value for longer than 5 seconds. Cause is probably excessive- ly long cable, overloading or an insufficiently high power generator output.
Use a on-shore power connection with a more stable power supply. Use a shorter power cable for the on-shore connection. Switch off other electrical loads. Please contact your authorised Webasto Marine dealer.
A01
Low pressure compressor 1
Incorrect pressure sensor measurement.
Please contact your authorised Webasto Marine dealer.
Compressor switches off in heating mode: sea water flow rate too low or sea water too cold (temperature below 6 °C). Sea water strainer blocked or no intake.
Remove blockage at sea water inlet. Check/clean sea water strainer and bleed sea water circuit.
Compressor switches off in cooling mode: cold water flow rate too low.
Check operation of the cold water pump. If fitted, open shut-off cock valves. Please contact your authorised Webasto Marine dealer.
Refrigerant shortage.
Please contact your authorised Webasto Marine dealer.
Refrigerant circuit blocked.
Operate chiller unit for 5 minutes in heating or cooling mode (if pos
-
sible), then change over operating mode. Switch chiller unit back on and check whether the fault occurs again.
A02
High pressure compressor 1
Pressure switch defective or power circuit interruption/short circuit.
Please contact your authorised Webasto Marine dealer.
Incorrect pressure sensor measurement
Compressor switches off in cooling mode: sea water cooling insuffi- cient. Sea water strainer soiled or no intake.
Remove blockage at sea water inlet. The minimum flow rates must be complied with. Clean sea water strainer and bleed sea water cir- cuit.
Compressor switches off in heating mode: cold water flow rate too low. Cold water pump defective. Plate heat exchanger or cold water circuit blocked. Refrigerant circuit blocked.
Check operation of the cold water pump. If fitted, open shut-off cock valves. Please contact your authorised Webasto Marine dealer.
