Results for "coleman mach"

Found out the hard way that the previous owner of my 2019 Rockwood Minilite 2509s left me with a Coleman Mach AC that blows fuses instantly when I flip on the battery. The AC fuse blows instantly when I turn on the battery disconnect, before the AC is even activated. The fuse literally blows before it's completely seated in the panel.

This began two weeks ago without warning - the system had been functioning normally prior to this. Initial fuse replacement provided temporary operation, but the problem returned on the next trip with the fuse already blown upon arrival.

Given the immediate fuse failure with just battery power connected, what type of electrical fault would cause this symptom pattern in a Coleman Mach unit, and what's the most likely location of the problem in the AC circuit? …more

Tried running my RV's electric heating this winter but it's eating through power way faster than it should, so I'm looking at adding Coleman Mach heat strips. I have a SportTrek Touring 272VRK with two AC units (Coleman-Mach 13.5k BTU and 15k BTU, models 48203-069 and 48204-069) with Cool-Only Control Boxes (model 8330-752) and I'm considering adding Coleman Mach electric heat strips, but I'm worried about a few things.

First, I'm concerned about whether my current AC units are compatible with heat strips - specifically the Coleman Mach 37203-4551 Electric Heat Kit/Strip. I want to confirm this will work with my existing 8330-752 control boxes. Second, I'm worried about the electrical load - I keep reading about heat strips drawing a lot of power and I'm scared of overloading my system or tripping breakers.

Most importantly, I absolutely do NOT want to lose the ability to use my existing Suburban SF-30FQ 30,000 BTU propane furnace - it's my primary heat source and I need that independence. I currently have 9420a381 digital thermostats controlling these systems, and I want to ensure I can maintain my current setup.

Is there a way to safely add Coleman Mach heat strips using some kind of Heat-Ready Control Box without compromising my furnace operation? I just want some reassurance that this can be done properly without creating problems. …more

I'm planning my weekend getaway when I spotted water dripping from my Coleman Mach air conditioner model 49003A879 that definitely wasn't there yesterday. I'm in Myrtle Beach, with super humid conditions (90s with crazy humidity) and getting pea-sized water drops falling from the ceiling vents at maybe 2 drops per minute, which doesn't sound like much but it's making puddles on my floor.

I've been keeping the main ceiling vents mostly closed to push more air to the back of the coach. Climbed up on the roof expecting to find some fancy drain pump or tubing system, but honestly don't see much of anything obvious.

Is this just how these Coleman units work, or am I missing something? Really hoping this isn't a 'deal with it' situation, but wondering if my closed vents are screwing up the airflow or if there's actually a drainage problem I need to fix. …more

Standing here looking at my RV AC unit right now and I can see the brand new capacitor I just installed, but the entire system is stone cold dead. I have a 2012 King Aire 4584 and recently tried replacing the run capacitor on my rear A/C unit because it was only running for about two minutes at a time and the compressor was getting really hot.

Now I'm in a worse situation - the unit won't start at all, even after I put the old capacitor back in. I'm wondering if there are some basic things I should be checking that I might have missed? Could I have blown a fuse or tripped something during the replacement? The compressor was pretty hot when I was working on it.

I'm hoping there might be some kind of reset button or other troubleshooting steps I should try before calling a repair tech. Any advice would be really appreciated! …more

Got a dead front AC unit on my buddy's 2022 Holiday Rambler Endeavor at 2 AM — need this figured out before we hit the road tomorrow morning. We're talking a rig that's not even 3 years old yet! He's got two other roof units still working fine, but this one just gave up.

Is this typical for RV air conditioners? Seems crazy short for something that expensive. Should he be looking at warranty coverage or is he stuck buying a new unit? Any advice on how to handle this with the manufacturer or dealer would be awesome! …more

I tried everything I could think of, but probably a dumb question—why would my 2006 Sightseer 30B's AC hum after storage but blow zero air? big mistake lol. The thing is humming like crazy but zero air coming out of any vents. It's loud enough to wake the neighbors but doing absolutely nothing.

I'm guessing something got stuck or seized up while it was sitting? Anyone know what typically causes this after long storage periods? Really hoping it's something I can fix myself before calling a repair guy. …more

My 2003 Fleetwood Excursion came with a nasty surprise — the previous owner left the Coleman-Mach multi-zone AC control box completely destroyed. I replaced my old control box with a model 9430A751, but now I'm having serious issues with my original Coleman Mach ZC thermostat.

The new control box has SIG 1 and SIG 2 terminals, but my original only had a single SIG terminal. I've confirmed the heat pump and zone jumpers are set to zone 1 and no heat pump. My thermostat lights up on Zone 1 briefly, then switches to Zone 2 and becomes completely unresponsive. I'm only running a single-zone setup with one purple signal wire.

When I plug in the control box, I get three green LED 1 flashes. I'm getting increasingly concerned that this 9430A751 control box isn't compatible with my system at all. Should I stop trying to make this work before I cause more problems? Is there a fundamental difference between control boxes with dual SIG terminals versus single SIG terminals that I'm missing? …more

Noticed my 06 Pace Arrow is 18 years old and the dual zone AC's zone 1 is starting to completely fail with a blinking green LED — repair or replace? Zone 2 is working fine with a steady green LED on the control board, but zone 1 has this annoying blinking green LED that I'm pretty sure means something's wrong.

The thermostat isn't showing zone 1 anymore either. I'm thinking it's gotta be the control board since zone 2 is chugging along just fine with the same setup. Anyone know if a blinking LED definitely means the board is toast? And is there a way to test this without just buying a new board and hoping for the best? …more

Apparently this Coleman Mach 10 AC motor replacement is eating through my entire weekend because the new shaft is way too long for my Winnebago Era. The new motor shaft is way too long compared to what I'm seeing in YouTube videos of other Coleman units. The old blower wheel is stuck tight on the original shaft too - thing won't budge!

Anyone dealt with this before? Do I need to trim the shaft somehow, or is there a better way to handle the length issue? And what's the trick for getting that stubborn blower wheel off without wrecking everything? …more

Around the third day into our trip, my Micro-Air 355 thermostat has zones not responding, temperature readings jumping randomly, AND the whole system cycling on and off every few minutes all at once. I replaced my old RV Comfort.ZC thermostat with a Micro-Air 355 and nothing is working right. The old thermostat controlled both zones perfectly, but now I've got a complete mess.

My current wire connections include:
- Red 12v in *
- White 12v out *
- White B-
- Green SIG 1 *
- Brown SIG 2 *
- Red R+
- Blue B-
- Yellow R+ (not used on old thermostat)

Zone 1 cool doesn't work AT ALL, but the furnace works fine. Zone 2 is backwards - cool works but furnace won't kick on. Even worse, once I switch from zone 1 to zone 2, I can't get back to zone 1! I have to reset the whole thing.

I've got these extra yellow and orange wires that were showing voltage when zone 2 furnace should be running. My Coleman Mach units are fine - this has to be a wiring difference between the thermostats. I really thought this would be plug-and-play! Is there something specific about how the Micro-Air 355 handles SIG1 and SIG2 wires differently than the RV Comfort.ZC? I'm starting to think I need professional help with this multi-zone setup. …more