Carrier CARH09K Air Conditioner "low pressure switch" Questions

Low pressure switch open." Indicated by the leds on the defrost control board Happens 2 times and then shuts down for " Low pressure lockout" Have you checked the pressures? if you have is it just the

...low pressure switch in the low pressure side is bad you can bypass it to check it,or its low on r134a refrigerant and thats the reason the low pressure switch wont close or the 12 volt fuse and relay ...

...low pressure switch or an electronic board is the suspect. how can I test which part has failed If you put a jumper wire across the low pressure switch and unit runs then either the low pressure ...

...Low pressure switch will not let compressor run. Look for oil around the condenser tubes. If you find it, this is probably the leak source. Redchris652,First of all,do a visual inspection of all the ...

...low pressure trips the low pressure switch, shutting down the compressor.  With compressor off the pressure equalizes the low pressure switch opens and the compressor switches ...

low pressure cut off switch on it. When it runs with a low refrigerant charge it causes pressure in the refrigerant lines to go low, then the compressor shuts off (thats what the low press switch does

...low pressure switch is malfunctioning. Jump the low pressure switch for just a little and see if this kicks it off. Once pressure switch is jumped turn ac off then back on. This will let enough ...

...low pressure switches or sensors that will shut the unit off to prevent damage to your compressor, some high pressure switchs will cut off due to a dirty condenser coil check your coil it can be , ...

...low pressure switch....... Or it could be a dirty condensor coil or a Condensor Fan Motor not running and going OFF on High pressure switch.... Or if you are running the RTU in Low Ambient Conditions ...

...low pressure switch? Assuming your inside blower is coming on, 1. If you have a volt meter, check across the contactor coil (24volt) to see if you have 24 volts * If not, and you have a low pressure ...