I have a xantrax 1800 inverter factory installed in a 2011 Greyhawk. On my first shakedown run it would power my frdge and microwave while driving. Now, while driving, it only converts off the battery and neither the fridge or the microwave works unless we run the generator. It's like it no longer sees the alternator as a power source. Does anyone have any idea what might be wrong?

Have you checked all fuses? Are you getting 12V to the inverter?BTW AC equipment can draw a lot of DC amps through an inverter. A 300W refer would draw about 26A. A microwave could draw 5 times as many amps. Likely more than your alternator can supply. Those kind of draws are very large and stressful on the equipment even for limited amounts of time.

Hi,There is a fuse between the alternator and the "house battery" charging circuit. Replace it. Or do as I did and go with an auto reset circuit breaker. I did that after two fuses popped. The fridge draws about 30 amps @ 12 v dc. My microwave draws 160 amps @ 12 v dc. The fuse is often only 60 amps.The 60 amp fuse is in the engine compartment fuse box--not in the "house" fuse box.

Am still getting 12v to the inverter. Didn't know about the fuse in the engine compartment. I think that may be the answer I was looking for. Where did you install the breaker you replaced the fuse with?

TobyRHudson wrote:Am still getting 12v to the inverter. Didn't know about the fuse in the engine compartment. I think that may be the answer I was looking for. Where did you install the breaker you replaced the fuse with?With 12V to the inverter then it's not a fuse between the battery and inverter. Plus the AC output works on the gen so the ATS in the inverter is OK. This points to an inverter problem. Are there any fuses on the inverter?Also are the batteries being charged? This would indicate that the AC wiring to the inverter and DC charger portions are OK.

Also are there any manual instructions for say a complete reset or other trouble shooting information?

inverter and engine alternator | Good Sam Community

24 Replies

CA_Traveler
Explorer III
May 28, 2013
TobyRHudson wrote:
Am still getting 12v to the inverter. Didn't know about the fuse in the engine compartment. I think that may be the answer I was looking for. Where did you install the breaker you replaced the fuse with?
With 12V to the inverter then it's not a fuse between the battery and inverter. Plus the AC output works on the gen so the ATS in the inverter is OK. This points to an inverter problem. Are there any fuses on the inverter?

Also are the batteries being charged? This would indicate that the AC wiring to the inverter and DC charger portions are OK.
TobyRHudson
Explorer
May 28, 2013
Am still getting 12v to the inverter. Didn't know about the fuse in the engine compartment. I think that may be the answer I was looking for. Where did you install the breaker you replaced the fuse with?
pianotuna
Nomad III
May 28, 2013
Hi,

There is a fuse between the alternator and the "house battery" charging circuit. Replace it. Or do as I did and go with an auto reset circuit breaker. I did that after two fuses popped. The fridge draws about 30 amps @ 12 v dc. My microwave draws 160 amps @ 12 v dc. The fuse is often only 60 amps.

The 60 amp fuse is in the engine compartment fuse box--not in the "house" fuse box.
CA_Traveler
Explorer III
May 28, 2013
Have you checked all fuses? Are you getting 12V to the inverter?

BTW AC equipment can draw a lot of DC amps through an inverter. A 300W refer would draw about 26A. A microwave could draw 5 times as many amps. Likely more than your alternator can supply. Those kind of draws are very large and stressful on the equipment even for limited amounts of time.

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inverter and engine alternator

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