Kisses Inverter a.c. breakers

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C

Cowichan

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Jun 15, 2018
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36
Fluid Motion Model
R-23 (Sterndrive)
Non-Fluid Motion Model
Previous R25 SC, C 28.
Vessel Name
Kinship
My 2018 Cutwater 30S has one of the new Kisae inverters. Recently we noticed that our coffee maker only had power intermittently- just for a brief flash- not enough to work. Just a green light for a portion of a second. I watched the Voltage on the a.c. meter briefly flash up each time as well. Today I had a mechanic check out the power to and from the inverter, which seems to be ok although the only time that the a.c. will stay on is if I have 3 or more a.c. breakers activated, which seems strange. So long as I turn on salon, galley and fwd. outlets, all works. Any other combination and the a.c. meter will jump up for a millisecond, but no continual power. Strange! Any ideas anyone, please!
Gordon.
 
Darn auto-correct. Kisae inverter. :l
 
This was pretty damned funny. I think if you kiss your inverter, the AC breaks! Good to know! A life lesson...

Others, like Mike, will chime in, but the coffee makers have been a recurring problem in the past on other inverters. They overload it and trip the breakers due to their high watts. But I will wait for the electrical experts to kick in.

Lesson: do NOT kiss your inverter.
 
Well no love lost on this inverter!
The coffeemaker worked well the last couple of months...with only the single breaker on. The boat was in for some warranty work including a battery that wouldn’t charge. I wonder if something happened along the way...
 
I am not familiar with your inverter. However, mine has a standby mode. Unless there is a draw for a few seconds it will not kick in. Your symptoms sound similar to that and the electronics on the coffee maker may be shutting down before the draw. Also as mentioned above some coffee makers do not like current from inverters. A french press always works. :lol:
 
I installed the Kisea SW1220 pure sine wave inverter. It has no issue with coffee maker, toaster, hair dryer. Any amperage draw under 16 amps it should work. When I wired the inverter to the switch OFF/shore power/inverter/generator the inverter position was set up to only power one side of the AC panel. (Fluid Motion wiring) Outlets, 2 accessory breakers, and microwave breaker were usable with the inverter.The reason for this is to eliminate the chance of overloading the inverter. The Kisea has a built in shut off when the battery voltage is at 10.5 the inverter shuts down and will not recover and turn back on until battery voltage is at 11.8 volts. If you have a battery that is marginal or a house battery that is not charging properly you may have enough battery voltage to turn the inverter on and supply AC voltage.If there is AC power, then a load is present, battery voltage drops, inverter shut down threshold is met, coffee maker doesn't work.The Kisea has a control panel that monitors battery voltage at the inverter. It should be at no lower then 12V while using the inverter for AC power if it gets lower then this turning a coffee pot on will give the symptoms you are experiencing. Example: AC power indicated, then a load is present, battery voltage drops, inverter shut down threshold is met, coffee maker doesn't work. This is just a thought. Check batteries, make sure they are fully charged. If it worked fine before and doesn't work properly now, What changed? Batteries, coffee maker, inverter one is not functioning properly.
 
Thank you for your replies, and Brian in particular for such a comprehensive perspective. I agree with your premis, and I do have a battery-engine start- that is low. It will only take a surface charge. So that could be it. However, the strange thing is that if I turn on 3 a.c. circuits the coffeemaker will work. Not with one or two, but only 3. This part I can’t get my head around...
 
I am not familiar with this particular inverter but have experienced with some inverters they need a minimum load to keep them “kicked in”. I wonder if you have enough of a load created by turning on 3 circuits to achieve this. A simple test for this would be to plug in some small resistive load like a 60 watt bulb or small heater first to an outlet on the same circuit, ( leave your other circuits off) check the voltage, then try your coffee maker and see if it remains stable. Just a thought. Tom


Sent from my iPhone using Tapatalk
 
The Kisae inverter/charger does have a battery saving mode. ( KISAE Inverter-Charger’s unique load sensing feature reduces the No Load current draw when loads less than 10 watts are attached. This feature checks the load connected to the inverter-charger: if the load is >10W, then the inverter remains ON, but if the load is <10W, it will shut down the output, ensuring that only minimal power is drawn from the battery.) The Kisae SWFXR1220 or 1230 do not have this feature. My installation is different from the factory installation. I did not use the transfer switch. I have the SWFXR 1220 wired to manually be turned on. It is wired to the four position Blue sea AC selector switch ( same way as Fluid Motion) Isolating the neutral from the other circuits, shore power, and generator. With inverter on you should see 120V at the panels voltmeter, you should also see the battery voltage at inverter (assuming Fluid motion installed the remote display on/off switch) main breaker on, The specific breaker for outlet( on ) I will have power to that outlet to operate the coffee maker.



This is the inverters display, remote install, It indicates the battery voltage to the inverter. You don't want it to be lower then 12V. I get concerned at 12.3 V, I have had it go below 12V over night and shut down the inverter. Morning voltage at display showed 11.6 Volts (house bank) I have a switch that parallels thrust battery to house batteries. I switched that on to have power for coffee. Recharged the batteries when cruising that day.




This is the AC panel, switch position inverter, Panel voltage 120V AC Panel Voltage 13V DC matching voltage at inverter. When outlet breakers are turned on Voltage at outlets 120V AC.





In your first post you stated you have to turn all outlets on (3) salon, galley and fwd outlets to get the power to operate the outlet the coffee maker is plugged into. Have you always had to do this? If answer is yes, Have you ever checked to see if the outlets correspond to the breaker labels. I have two outlet circuits in my C26 Port and Starboard. When I took delivery if I turned Port breaker on I had no power to Port outlets. I had power to Starboard outlets. Fluid Motion wired them opposite. Maybe your issue? If the issue just started and wasn't an issue when you took delivery, something in the system is malfunctioning, Batteries, Coffee maker, inverter. It should be a easy fix once some troubleshooting is done.
 
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