Question about Ruud UAMB Air Conditioner
3.5 ton Ruud M/N URGG roof package unit.
In the AC mode my unit calls for cooling cycles on the fan starts but the compressor short cycles off then starts a few minutes later.
Usually short cycling means that High side pressure is getting to high (due to not working condenser fan, or dirty condenser coil), or low side pressure is getting too low (might have low level of freon or restriction in sealed system). low side would drop dramatically if indoor blower is not running, so if air is not circulating thru evaporator coil, coil will freeze up and low side would be much lower then normal. Here is video how I found issue with package AC not coming on. Thermostat call for cool, but condenser would not come on, indoor blower runs ok.
Posted on Apr 01, 2017
BAD FAN CONTROL RELAY
Posted on Nov 30, 2008
If the unit is low on freon it will short cycle but a compressor internal overload will cause it to. Lets hope its the freon. Has it been frezzing up lately. Low freon is the cause most of the time. Make sure your filters are clean and both fans are running. Hi head can cause this to. (fans not running) How old is this unit. Maybe the coils need to be cleaned. Sound like this unit may need a check up and a good cleaning.
Posted on Nov 02, 2008
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Posted on Jan 02, 2017
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