AC getting amperage spike after an hour use.
I have a Coleman Mach 3+ non ducted AC. Recently it started having an amperage spike after about an hour and trips a 20amp breaker on the house (I know I need a 30a) or it faults my generator which is...
Forum Discussion
1. Clean both the Outside condensor coil AND the inside Evap coil.
2. Now, you state nothing else on. Not correct. When you plug in a RV, you ALWAYS have the Power Converter pulling power, and other small appliances like a TV and such even if OFF.
3. You need a AMP draw on the compressor AFTER you do the cleanings. You don't state year model. THAT is crucial to what may be happening. BAD NEWS if over 5 years old. Your description is a classic bad compressor. After running for that hour, the head pressure builds up and trips the breaker. What fools some people is, WHY the Garage breaker and NOT the 20 amp AC breaker in the RV. Because of the length of 120 wiring from your house breaker system to the garage plug and then to the RV. Your tell is, the Genset breaker ALSO trips.
4. So, you need a AC amp clamp on gauge and WHEN the breaker trips, you take a amp reading when it finally restarts. The NORMAL progression of a defective Compressor is, they start out at its normal 10 to 12 amp running rating and as it runs for that hour, the amp draw slowly raises up. The compressor amp draw should STAY at its running rating(10 to 12 amps) as long as the system coils are clean. Usually when I have your type problem, I connect my amp probe and run the AC and monitor it. Usually withing 30 minutes I see the amp draw has increased showing a bad compressor. Doug
https://www.harborfreight.com/digital-clamp-meter-96308.html?utm_source=google&utm_medium=cpc&utm_campaign=19166646406&campaignid=19166646406&utm_content=147222427387&adsetid=147222427387&product=96308&store=&gclid=CjwKCAjwhdWkBhBZEiwA1ibLmGVJLTOEh5W63MvHFa02I-_QggbwsFNCGQdK5Zbf-Pdg_yyDfN8pYxoCQMMQAvD_BwE
2. Now, you state nothing else on. Not correct. When you plug in a RV, you ALWAYS have the Power Converter pulling power, and other small appliances like a TV and such even if OFF.
3. You need a AMP draw on the compressor AFTER you do the cleanings. You don't state year model. THAT is crucial to what may be happening. BAD NEWS if over 5 years old. Your description is a classic bad compressor. After running for that hour, the head pressure builds up and trips the breaker. What fools some people is, WHY the Garage breaker and NOT the 20 amp AC breaker in the RV. Because of the length of 120 wiring from your house breaker system to the garage plug and then to the RV. Your tell is, the Genset breaker ALSO trips.
4. So, you need a AC amp clamp on gauge and WHEN the breaker trips, you take a amp reading when it finally restarts. The NORMAL progression of a defective Compressor is, they start out at its normal 10 to 12 amp running rating and as it runs for that hour, the amp draw slowly raises up. The compressor amp draw should STAY at its running rating(10 to 12 amps) as long as the system coils are clean. Usually when I have your type problem, I connect my amp probe and run the AC and monitor it. Usually withing 30 minutes I see the amp draw has increased showing a bad compressor. Doug
https://www.harborfreight.com/digital-clamp-meter-96308.html?utm_source=google&utm_medium=cpc&utm_campaign=19166646406&campaignid=19166646406&utm_content=147222427387&adsetid=147222427387&product=96308&store=&gclid=CjwKCAjwhdWkBhBZEiwA1ibLmGVJLTOEh5W63MvHFa02I-_QggbwsFNCGQdK5Zbf-Pdg_yyDfN8pYxoCQMMQAvD_BwE
