Repair of Airxcel 8333B676 AC roof unit
Hi, We have a roof AC in which the evaporator coil - one of the tubes was punctured. Both of the RV repair places in my area would not touch it and wanted to sell me a new unit for 800 bucks. I...
Forum Discussion
Window A/C units are also sealed systems. So are Fridges, Freezers, Water Coolers, etc. They use a tiny "cap tube" to control refrigerant expansion. Dislodge any impurity and you clog the cap tube. They also hold only a very small refrigerant charge. Just a little too much or too little and it doesn't work right.
There are "bullet valves" that clamp to the tubing but they leak. And officially the refrigerant's supposed to be "recovered" using a specialized machine. Then "evacuated" with a vacuum pump before charging. Combine all these and you get a non-repairable unit, at least practically.
The 13500 Coleman (now RVP) Mach A/C on our 1984 Class C was working fine when we sold it in 2009. It wasn't cooling well in the last season or two we had it, so I did the Chris Bryant tune-up and it went back to COLD. The RVP Mach 15000 on our 2002 coach is working fine.
The Coleman/RVP units last a long time. Failures are typically Dirt, Capacitors, and the Shroud's made of Eggshell. MaXXair has their TuffMaxx replacement shroud, lifetime warranty.
There are "bullet valves" that clamp to the tubing but they leak. And officially the refrigerant's supposed to be "recovered" using a specialized machine. Then "evacuated" with a vacuum pump before charging. Combine all these and you get a non-repairable unit, at least practically.
The 13500 Coleman (now RVP) Mach A/C on our 1984 Class C was working fine when we sold it in 2009. It wasn't cooling well in the last season or two we had it, so I did the Chris Bryant tune-up and it went back to COLD. The RVP Mach 15000 on our 2002 coach is working fine.
The Coleman/RVP units last a long time. Failures are typically Dirt, Capacitors, and the Shroud's made of Eggshell. MaXXair has their TuffMaxx replacement shroud, lifetime warranty.
