Jump to content

A/C evaporation sensor calibration table

LinkAtom Player

Recommended Posts

I dont think I have even seen any calibration data for one, it is pretty uncommon to have them connected directly to the ecu, usually it is connected to the AC computer or BCM and transmitted over CAN so we dont need need a calibration.  

Link to comment
Share on other sites

I've never seen any automotive A/C system that uses a sensor for "A/C evaporation" that would require a calibration curve. What kind of car is this on?

Typically, automotive A/C systems will use a thermal switch that is in physical contact with the evaporator core to detect when the evaporator core temp is getting just below the freezing point (0*C or 32*F) - at that point the switch opens to cycle the A/C compressor clutch off temporarily, which prevents condensation from freezing to the evaporator core and blocking airflow thru it. Once the core temp is above freezing again, the switch closes, and the compressor clutch engages again.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...