Cannot run A/C while at highway speeds
This is long and I am sorry for that. But describing the setup and problem is necessary. Here is my situation. First of all, this is a 2005 Hitchhiker II 32.5 UKTG fifth wheel. I have built a ge...
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Ductape wrote:
More possibilities. Check fan rotation, is it pulling external air front to rear? If reversed pushing hot air out the front works fine until high speed airflow overcomes the fan, then you get high head pressure and high current.
If your trailer has a hump ahead of AC as many do then perhaps there's some sort of turbulence interfering with air flow through the coils st speed. Motorhomes are flat on top.
This sounds like the most likely answer to your problem. If the condenser is mounted in the front and the fan pushes the air to the front, when travelling at 60mph you have that speed of air movement pushing air into the AC unit. The condenser fan is now pushing against that incoming air causesing the fan motor to fight to overcome that incoming air. If the condenser is mounted in the rear, this should not be the issue.
