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Air Conditioning Compressor Question

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Old Nov 22nd, 2020, 19:23   #1
M88JCP
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Default Air Conditioning Compressor Question

Evening all

Hope everyone is keeping well?

I have a strange problem with my air conditioning compressor. When i turn the a/c on, the clutch on the compressor engages for approx 10 seconds, cuts off for approx 10 sec, then turns back on for 10 secs, and then cycles like that continually.

I have checked the clutch gap and it is correct at 0.3mm, so would welcome some advice on what could be causing the problem?

Thanks
James
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Old Nov 22nd, 2020, 20:28   #2
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I think this can be caused by low gas, may need recharging
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Old Nov 22nd, 2020, 22:49   #3
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Perfect thankyou
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Old Nov 23rd, 2020, 11:30   #4
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This is perfectly normal behavior for an a/c compressor, the system is designed to maintain a certain pressure and it does this by 'cycling' the compressor on and off which also saves fuel use. The pauses between on/off vary greatly according to the load on the system - big pauses in winter and short ones in summer heavy traffic etc. If a compressor is running continuously then that is an indication of low gas and the compressor scavenging for refrigerant (basically struggling to achieve the required pressure).

The best home-test for an a/c systems health is to check the air temp at the vents with the system set to the lowest temperature, a good indicator is a steady 5 to 8 deg C at the vents.
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Old Nov 23rd, 2020, 13:42   #5
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Great thankyou, i'll test the temp and hopefully show everything is ok
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