So I got up this morning. I found that my refrigerator is acting up. In fact it was tripping the breaker, the water pump does not kick-on, the compressor did kick on, with some of the startup tests and others is just barely operated. The oil level is good, but I believe the refrigerator going out in combination with the other loads likely on at the time on the A-bus took out the inverter AC input power transfer relay. One problem caused the other and masked itself during debug. It likely has been going out for some time. I did not try running the refrigerator while on the generator and debugging the systems. Ahhh!
shore power won’t reset on boat
- Thread starter BugOutBoat
- Start date
---- It's been two days now. Waiting for parts to come in. The inverter parts for those interested are:
Magnasine MS2812 Inverter
AC Transfer Relay replacement board #30-0010 multiple suppliers ~$250.00 - $276.00
Replacement parts on the board:
2.2 uF 275~ Capacitors (2) ECQU2A22 Digikey PN 10738-ND $1.79 ea
Deltrol Controls general purpose relays 20930-81 (2) can purchase from Galcot for $23.13 ea.
Root cause analysis:
1. Grunart Marine refrigerator model RC450 startup sequence failure. High current draw and feed pump will not start. This occurred with other loads on the A-bus resulting in exceeding the AC Transfer Relay 35 amp rating sufficiently long enough to damage the board.
The relay I identified above is not the right part. The list below are the correct parts.
Magnasine AC Transfer Relay board: PN 30-0010 replacement boards range $250 - $276
Replacement board parts:
- 2.2uF Capacitor 270V~ ECQU2A225 Digikey P/N P10738-ND run about $1.79 ea
- Deltrol Controls general purpose relay P/N 20930-81 on Galcot priced at $23.13 ea
Ordered the replacement board and will repair the current one as a ready service spare if this occurs in the future. I am pretty sure what caused this problem is an electrical problem with my Grunert Passagemaker AC450 refrigerator. It's intermittently drawing very high current and the sea water pump doesn't start. I believe the motor start capacitor or the star relay have gone out.
To all of you who helped on this your comments have been extremely helpful and very kind. We get our parts tomorrow and will fill you all in with the results. I could not do exhaustive testing on the electronics in the inverter so there is still a chance we have more to do.
The AC Transfer Relay board arrived today. I replaced the board and restored shore power. The AC Transfer Relay Part Number 30-0010 from MagnaSine repaired the inverter and has restored services. We now have power and heat.
I believe the cause of the failure is related to the refrigerator's Start Capacitor or Start Relay going out. Look up my post on the Grunert refrigerator for debug steps and root cause analysis.
We thank everyone that assisted in this effort and are extremely grateful to have heat again!!! Wahooo. If you have any questions on the work done please feel free to ask me questions.
I believe the cause of the failure is related to the refrigerator's Start Capacitor or Start Relay going out. Look up my post on the Grunert refrigerator for debug steps and root cause analysis.
We thank everyone that assisted in this effort and are extremely grateful to have heat again!!! Wahooo. If you have any questions on the work done please feel free to ask me questions.