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Low Ambient Controls(LA-277)

LA 277 Sensor Web
LA-120 and LA-277
 
Notice: LA-240 is now the LA-277
and will now handle 208/240 and 277VAC
 
FanHandler LA models are used to control refrigerant head pressure. These Low Ambient controls are often used as a service tool to help set the refrigerant charge of an AC unit
during cool weather conditions.
 

These units monitor the temperature of the liquid line and adjust the condenser fan speed to maintain a line temperature of about 105deg. This effectively simulates an 85 degree day, allowing you to get an accurate charge even when ambient temperatures are in the low 50s.

These units are designed to be quick and easy to install, many jobs can be completed in less time than putting up a tent!

 
Includes:
  • LA-control
  • 4 ft yellow sensor
  • Instructions
  • FanHandler 5 Year Warranty and 60 day money back guarantee.
 
Find out more
 
$180.00
Voltage:



Testimonials

  • Hi Ryan,

    Controller arrived on Friday and was installed on Saturday. Works great. I actually have used it operating in a differential  pressure mode with a flow probe prior to the filter on the return and a flow probe about 2/3 of the way down the main duct (as I was taught for VAV systems).

    I’m very pleased with how this works and it has solved the control problem I was dealing with. The Bosch airhandler in the installation is capable of two speeds, but of course the ECM 4Z doesn’t care about those. One possible improvement for your controller is to allow for a different HI set point for Stage 1 and Stage 2 call. Stage 2 could be at a higher TESP, which would be a bit noisier, but generally wouldn’t be used. As is stands the ramping up of the fan is gentle and not very noticeable unless you listen for it. Much better than before.

    Cheers,

    Ravi