I have a M5700 that keeps blowing the AC control fuse which is 5AMP. The blower and the panel suddenly stopped working (the AC light on the switch did not luminate). I replaced the fuse with another 5AMP fuse and it ran fine for a minute, then the fuse blew again. I replace the fuse again and the panel works, the blower works, but it's not cooling. Any suggestion on what to look for?
Kubota M5700 AC Control Blowing Fuses
- Thread starter mooreaud1
- Start date
I'd first look at coil on clutch for signs of burning/melting. If it looks ok I'd test for 12 volts at coil. If there's 12 volts but clutch doesn't engage the clutch is burned out. If there isn't 12 volts, start at compressor going back toward switch looking for relay. If there's 12 volts in but less or none out the relay is bad. To confirm relay is the problem jump from + battery post to clutch using a 10 amp fused wire to see if clutch operates. Come back and report what you did or didn't find.
I checked the circuit and the clutch seems to work fine with the test but no 12V coming in. Tomorrow, I’m removing the roof so I can get to the relay. Hopefully, I’ll find the problem there. Thanks for your help.
Ok, I removed the roof and found the relays. One is for the AC/Blower and the other is for the clutch. I tested the the relay with a test rig the coil activates and the continuity is shown on a meter when its engaged. If I jump the relay terminals the clutch works so it’s good to the relay but the relay is not seeing the signal to switch. I can only think it is the switch on the panel. Does this make sense?
These are from my B2650 WSM which is identical to the LX2610 WSM. Maybe Kubota uses the same thing on yours.
Attachments
Thanks, but it’s a M5700 and it is totally different. I have a shop manual. I wish I could find the switch diagram but I can’t find it in the shop manual. Thank you for the info. I wish it was useful in my situation.
Both of my manuals have it in the Cabin section under Servicing, chapter 6. Weird spot to place electrical content.
I found the issue. I was assuming it would be the relay, but it wasn’t. It was the actual switch on the control panel. I tested the switch and found it bad. Being very hesitant in thinking I found the real problem since it blew fuses at first, I checked for any potential short between the switch and relay and found none. The switch looked pretty cheap so I searched for a common switch that would save me money and couldn’t find one. I had to buy the switch from Kubota. It was $97 but it did come with the harness and connector. That seemed to fix the problem. AC works great now. Thanks for all the help from everyone.